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1. Fermentability of high-moisture corn treated with chemical preservatives

Author:
Vancauwenberge, J.E.; Bothast, R.J.; Black, L.T.
Source:
Journal of agricultural and food chemistry 1982 v.30 no.4 pp. 752-754
ISSN:
0021-8561
Subject:
water content; corn; preservatives; formaldehyde; ammonia; sulfur dioxide; acetic acid; propionic acid; biomass; alcoholic fermentation; ethanol production; ethanol
DOI:
10.1021/jf00112a031

2. Growth characteristics of Geotrichum ingens on propionic acid and acetic acid in batch and continuous culture

Author:
Vorster, E.; Killian, S.G.; Du Preez, J.C.
Source:
World journal of microbiology & biotechnology 1994 v.10 no.5 pp. 505-509
ISSN:
0959-3993
Subject:
single cell protein; acetic acid; Geotrichum; cell culture; propionic acid; yields; biomass
DOI:
10.1007/BF00367654
PubMed:
24421121

3. Kinetics of growth of Lactobacillus plantarum with glucose, organic acids (malate, citrate, acetate) and ethanol

Author:
Kennes, C.; Veiga, M.C.; Naveau, H.; Nyns, E.J.
Source:
Biotechnology letters 1995 v.17 no.9 pp. 899-904
ISSN:
0141-5492
Subject:
Lactobacillus plantarum; fermentation; glucose; ethanol; malic acid; citric acid; acetic acid; mixtures; biomass; yields; wines; ciders
Abstract:
... L. plantarum was grown on glucose and organic acids, i.e. malate, citrate, and acetate, frequently jointly encountered in wine and cider fermentation. The effect on fermentation patterns of different mixtures of acids as well as ethanol was studied. Specific growth rates and apparent biomass yields on glucose increased when adding citrate or malate. Acetate and ethanol were not consumed by the lac ...
DOI:
10.1007/BF00127423

4. Role of oxygen on acetic acid production by Brettanomyces/Dekkera in winemaking

Author:
Ciani, M.; Ferraro, L.
Source:
Journal of the science of food and agriculture 1997 v.75 no.4 pp. 489-495
ISSN:
0022-5142
Subject:
acetic acid; anaerobic conditions; biosynthesis; aerobic conditions; fermentation; yeasts; Saccharomyces cerevisiae; grape juice; winemaking; ethanol production; biomass; dissolved oxygen
Abstract:
... Since the large occurrence of Brettanomyces yeasts in strict anaerobiosis environments (sparkling wines) has been found without an increase in acetic acid content, we evaluated the influence of the oxygen concentration on acetic acid production. Results showed that the oxygen concentration exerted a strong influence on both growth and acetic acid production by Brettanomyces yeasts in winemaking. F ...
DOI:
10.1002/(SICI)1097-0010(199712)75:4<489::AID-JSFA902>3.0.CO;2-9

5. Fractionation of woody biomass with boiling aqueous acetic acid containing a small amount of mineral acid at atmospheric pressure: Reactivity of arylglycerol-β-aryl ethers in lignins with aqueous acetic acid containing H2SO4

Author:
Yoshihiro Sano; Shu Shimamoto; Makiko Enoki; Haruo Konno
Source:
Journal of wood science 1998 v.44 no.3 pp. 217-221
ISSN:
1435-0211
Subject:
lignin; acetic acid; fractionation; biomass; wood; ethers; sulfuric acid; chemical composition; pulping; chemical structure
Abstract:
... To characterize the mechanism of the reaction of lignin with aqueous acetic acid (AW) containing a small amount of H₂SO₄, guaiacylglycerol-β-guaiacyl ether (GOG), and guaiacylglycerol-β-syringol ether (GOS) were refluxed in 90% AW with 0.28% H₂SO₄ for 0–120 min. Reaction products and their silylated derivatives were characterized by analytical methods such as gas chromatography-mass spectrometry a ...
DOI:
10.1007/BF00521966

6. Comparative stability of ethanol production by Escherichia coli KO11 in batch and chemostat culture

Author:
Dumsday, G.J.; Zhou, B.; Yaqin, W.; Stanley, G.A.; Pamment, N.B.
Source:
Journal of industrial microbiology & biotechnology 1999 v.23 no.1 pp. 701-708
ISSN:
1367-5435
Subject:
Escherichia coli; acetates; acetic acid; adenosine triphosphate; antibiotics; biomass; ethanol production; galactose; glucose; lignocellulose; mannose; plate count; xylose
Abstract:
... Differing claims regarding the stability of the recombinant ethanologen E. coli KO11 are addressed here in batch and chemostat culture. In repeat batch culture, the organism was stable on glucose, mannose, xylose and galactose for at least three serial transfers, even in the absence of a selective antibiotic. Chemostat cultures on glucose were remarkably stable, but on mannose, xylose and a xylose ...
DOI:
10.1038/sj.jim.2900690
PubMed:
10455505

7. Enzymes Responsible for Acetate Oxidation by Acetic Acid Bacteria

Author:
Akihiko SAEKI; Kazunobu MATSUSHITA; Seiki TAKENO; Mariko TANIGUCHI; Hirohide TOYAMA; Gunjana THEERAGOOL; Napha LOTONG; Osao ADACHI
Source:
Bioscience, biotechnology, and biochemistry 1999 v.63 no.12 pp. 2102-2109
ISSN:
1347-6947
Subject:
Acetobacter (subgen. Acetobacter) aceti; Acetobacter pasteurianus; acetate-CoA ligase; acetates; acetic acid; acetyl coenzyme A; biomass; biotechnology; catabolism; culture media; glycerol; growth curves; oxidants; oxidation; phosphoenolpyruvate carboxylase; vinegars
Abstract:
... Several acetic acid bacteria of the genus Acetobacter oxidize much acetate oxidation, which is not desired in vinegar manufacturing. Acetobacter rancens SKU 1111, a strong acetate oxidant, grew rapidly with a biphasic growth curve while consuming acetate in the second growth phase. Acetobacter aceti IFO 3284 did not show extensive acetate oxidation. Addition of glycerol to the culture medium of Ac ...
DOI:
10.1271/bbb.63.2102

8. Phenol inhibition kinetics for growth of Acetobacter aceti on ethanol

Author:
Hill, G.A.; Daugulis, A.J.
Source:
Applied microbiology and biotechnology 1999 v.51 no.6 pp. 841-846
ISSN:
0175-7598
Subject:
Acetobacter; acetic acid; amino acids; biomass; carbon; ethanol; models; pH; phenol; specific growth rate; temperature
Abstract:
... Acetobacter aceti have been grown on ethanol under inhibitory conditions created by high concentrations of phenol. A defined medium with no vitamin or amino acid supplements has been used such that ethanol was the sole carbon substrate. The culture temperature was maintained at 30 degrees C while the pH was manually controlled to fall within the range 4.5-6.0 during ethanol consumption. Growth on ...
DOI:
10.1007/s002530051471

9. Kinetic analysis on formation of poly(3-hydroxybutyrate) from acetic acid by Ralstonia eutropha under chemically defined conditions

Author:
Wang, J.; Yu, J.
Source:
Journal of industrial microbiology & biotechnology 2001 v.26 no.3 pp. 121-126
ISSN:
1367-5435
Subject:
3-hydroxybutyric acid; Cupriavidus necator; acetates; acetic acid; biomass; carbon; carbon nitrogen ratio; molecular weight; nitrogen; pH; toxicity
Abstract:
... Batch cultures of Ralstonia eutropha in chemically defined media with acetic acid (HAc) as the sole carbon source were conducted to investigate acetate utilization, formation of poly(3-hydroxybutyrate) (PHB) and growth of active biomass (ABM) under different carbon to nitrogen (C/N) weight ratios. The specific acetate utilization rate based on ABM approached 0.16 g/g ABM h-1, which was not affecte ...
DOI:
10.1038/sj.jim.7000097
PubMed:
11420650

10. Micropropagation of the rare Eucrosia stricklandii (Amaryllidaceae) by twin-scaling and shake liquid culture

Author:
Colque, R.; Viladomat, F.; Bastida, J.; Codina, C.
Source:
Journal of horticultural science & biotechnology 2002 v.77 no.6 pp. 739-743
ISSN:
1462-0316
Subject:
acetic acid; activated carbon; in vitro culture; sucrose; culture media; rooting; bulbs; benzyladenine; micropropagation; charcoal; naphthaleneacetic acid; biomass; Liliaceae

11. Brettanomyces bruxellensis: effect of oxygen on growth and acetic acid production

Author:
Aguilar Uscanga, M.G.; Delia, M.L.; Strehaiano, P.
Source:
Applied microbiology and biotechnology 2003 v.61 no.2 pp. 157-162
ISSN:
0175-7598
Subject:
acetic acid; aeration; air flow; biomass; carbon; equations; ethanol; ethanol production; glucose; metabolites; oxygen; yeasts
Abstract:
... The influence of the oxygen supply on the growth, acetic acid and ethanol production by Brettanomyces bruxellensis in a glucose medium was investigated with different air flow rates in the range 0300 l h-1 (00.5 vvm). This study shows that growth of this yeast is stimulated by moderate aeration. The optimal oxygen supply for cellular synthesis was an oxygen transfer rate (OTR) of 43 mg O2 l-1 h-1. ...
DOI:
10.1007/s00253-002-1197-z
PubMed:
12655458

12. Fed-batch cultivation of docosahexaenoic-acid-producing marine alga Crypthecodinium cohnii on ethanol

Author:
Swaaf, M.E. de.; Pronk, J.T.; Sijtsma, L.
Source:
Applied microbiology and biotechnology 2003 v.61 no.1 pp. 40-43
ISSN:
0175-7598
Subject:
Crypthecodinium; acetic acid; biomass; carbon; docosahexaenoic acid; ethanol; glucose; microalgae; specific growth rate
Abstract:
... The heterotrophic marine microalga Crypthecodinium cohnii produces docosahexaenoic acid (DHA), a polyunsaturated fatty acid with food and pharmaceutical applications. So far, DHA production has been studied with glucose and acetic acid as carbon sources. This study investigates the potential of ethanol as an alternative carbon source for DHA production by C. cohnii. In shake-flask cultures, the al ...
DOI:
10.1007/s00253-002-1118-1

13. Growth characteristics of Rhodopseudomonas palustris cultured outdoors, in an underwater tubular photobioreactor, and investigation on photosynthetic efficiency

Author:
Pietro Carlozzi; Benjamin Pushparaj; Alessandro Degl’Innocenti; Antonella Capperucci
Source:
Applied microbiology and biotechnology 2006 v.73 no.4 pp. 789-795
ISSN:
0175-7598
Subject:
Rhodopseudomonas palustris; acetic acid; biomass; carbon; carbon dioxide; combustion; equations; heat; photoperiod; photosynthesis; photosynthetic bacteria; solar radiation
Abstract:
... The underwater tubular photobioreactor is a fully controlled outdoor system to study photosynthetic bacteria. Before growing bacteria cells outdoors, two modified van Niel medium (vN-A, vN-B) were tested under artificial light. During exponential growth, the specific growth rates were 0.0416 and 0.0434 h⁻¹, respectively; vN-B was chosen for outdoor experiments. The growth behavior of Rhodopseudomo ...
DOI:
10.1007/s00253-006-0550-z
PubMed:
16944131

14. Effect of pH, temperature and nutrient limitations on growth and leukotoxin production by Mannheimia haemolytica in batch and continuous culture

Author:
van Rensburg, E.; du Preez, J.C.
Source:
Journal of applied microbiology 2007 v.102 no.5 pp. 1273-1282
ISSN:
1364-5072
Subject:
Mannheimia haemolytica; acetic acid; aerobiosis; biomass; cattle; culture media; cysteine; glutamine; iron; manganese; nutrients; pH; pneumonic pasteurellosis; temperature; vaccines
Abstract:
... Quantification of the effects of pH, temperature and nutrient limitations on the growth and leukotoxin (LKT) production parameters of Mannheimia haemolytica in batch and chemostat culture. Mannheimia haemolytica strains OVI-1 and PH12296 were grown aerobically in two semi-defined media. In amino acid-limited cultures, the LKT concentration and yield in terms of biomass (YLKT/x) were up to eightfol ...
DOI:
10.1111/j.1365-2672.2006.03205.x
PubMed:
17448162

15. Use of Swine Manure to Improve Solid-State Fermentation in an Integrated Storage and Conversion System for Corn Stover

Author:
Murphy, P.T.; Moore, K.J.; Richard, T.L.; Bern, C.J.; Brumm, T.J.
Source:
Transactions of the ASABE 2007 v.50 no.5 pp. 1901-1906
Subject:
acetic acid; solid state fermentation; carbohydrates; lactic fermentation; silage fermentation; corn stover; lactic acid; biomass; application rate; pig manure
Abstract:
... Swine manure contains a host of chemical and biological constituents which make it desirable for amending lignocellulosic biomass in storage for year round processing in a biorefinery. Application of swine manure in an integrated biomass storage and conversion system was investigated to determine the potential for improved conversion of corn stover to organic acids and soluble carbohydrates during ...

16. Alcohol production through volatile fatty acids reduction with hydrogen as electron donor by mixed cultures

Author:
Steinbusch, Kirsten J.J.; Hamelers, Hubertus V.M.
Source:
Water research 2008 v.42 no.15 pp. 4059-4066
ISSN:
0043-1354
Subject:
acetic acid; volatile fatty acids; methane; butanol; ethanol production; propionic acid; butyric acid; biofuels; hydrogen; mixed culture; thermodynamics; biomass; sugar content
DOI:
10.1016/j.watres.2008.05.032
PubMed:
18725163

17. Batch Fermentation Model of Propionic Acid Production by Propionibacterium acidipropionici in Different Carbon Sources

Author:
Coral, Jefferson; Porto de Souza Vandenberghe, Luciana; Parada, José Luis; Pandey, Ashok; Soccol, Carlos Ricardo
Source:
Applied biochemistry and biotechnology 2008 v.151 no.2-3 pp. 333-341
ISSN:
0273-2289
Subject:
batch fermentation; propionic acid; Propionibacterium acidipropionici; carbon; feed additives; culture media; sugarcane; molasses; glycerol; lactates; microbial growth; biomass; yields; acetic acid
Abstract:
... Propionic acid (PA) is widely used as additive in animal feed and also in the manufacturing of cellulose-based plastics, herbicides, and perfumes. Salts of propionic acid are used as preservative in food. PA is mainly produced by chemical synthesis. Nowadays, PA production by fermentation of low-cost industrial wastes or renewable sources has been an interesting alternative. In the present investi ...
DOI:
10.1007/s12010-008-8196-1

18. Enhanced hyaluronic acid production of Streptococcus zooepidemicus by an intermittent alkaline-stress strategy

Author:
Liu, L.; Wang, M.; Du, G.; Chen, J.
Source:
Letters in applied microbiology 2008 v.46 no.3 pp. 383-388
ISSN:
0266-8254
Subject:
Streptococcus equi subsp. zooepidemicus; acetate kinase; acetic acid; biomass; carbon; fermentation; hyaluronic acid; lactate dehydrogenase; lactic acid; pH; viscosity
Abstract:
... Enhanced hyaluronic acid (HA) production of Streptococcus zooepidemicus by redirecting carbon flux through an intermittent alkaline-stress strategy. pH value was kept at 7·0 for the first 6 h, and then intermittently switched to 8·5 for 1 h and back to 7·0 for 1 h until the end of fermentation at 16 h (one pH switch cycle every 2 h). With this intermittent alkaline-stress strategy, HA production w ...
DOI:
10.1111/j.1472-765X.2008.02325.x
PubMed:
18221275

19. Extracellular glycosyl hydrolase activity of the Clostridium strains producing acetone, butanol, and ethanol

Author:
Berezina, O. V.; Sineoky, S. P.; Velikodvorskaya, G. A.; Schwarz, W.; Zverlov, V. V.
Source:
Applied biochemistry and microbiology 2008 v.44 no.1 pp. 42-47
ISSN:
0003-6838
Subject:
Clostridium acetobutylicum; acetic acid; acetone; beta-glucans; biomass; butanol; butyric acid; ethanol; starch; wheat flour
Abstract:
... Production of acetone, butanol, ethanol, acetic acid, and butyric acid by three strains of anaerobic bacteria, which we identified as Clostridium acetobutylicum, was studied. The yield of acetone and alcohols in 6% wheat flour medium amounted to 12.7-15 g/l with butanol constituting 51.0-55.6%. Activities of these strains towards xylan, β-glucan, carboxymethylcellulose, and crystalline and amorpho ...
DOI:
10.1134/S0003683808010079

20. Microbial utilization and biopolyester synthesis of bagasse hydrolysates

Author:
Yu, Jian; Stahl, Heiko
Source:
Bioresource technology 2008 v.99 no.17 pp. 8042-8048
ISSN:
0960-8524
Subject:
biopolyesters; polyhydroxyalkanoates; acetic acid; water reuse; biosynthesis; sugars; microbial activity; Cupriavidus necator; fuels; inoculum; formic acid; sugarcane bagasse; feedstocks; biomass; lignin; hydrolysates; bacteria
Abstract:
... Cellulosic biomass is a potentially inexpensive renewable feedstock for the biorefineries of fuels, chemicals and materials. Sugarcane bagasse was pretreated in dilute acid solution under moderately severe conditions, releasing sugars and other hydrolysates including volatile organic acids, furfurals and acid soluble lignin. Utilization of the hydrolysates by an aerobic bacterium, Ralstonia eutrop ...
DOI:
10.1016/j.biortech.2008.03.071
PubMed:
18474421

21. Monitoring of substrate and product concentrations in acetic fermentation processes for onion vinegar production by NIR spectroscopy: value addition to worthless onions

Author:
González-Sáiz, J. M.; Esteban-Díez, I.; Sánchez-Gallardo, C.; Pizarro, C.
Source:
Analytical and bioanalytical chemistry 2008 v.391 no.8 pp. 2937-2947
ISSN:
1618-2642
Subject:
acetic acid; alcoholic fermentation; biomass; byproducts; ethanol; industry; least squares; models; monitoring; near-infrared spectroscopy; nutrients; onions; prediction; spectral analysis; vinegars; wastes; wavelengths
Abstract:
... Wastes and by-products of the onion-processing industry pose an increasing disposal and environmental problem and represent a loss of valuable sources of nutrients. The present study focused on the production of vinegar from worthless onions as a potential valorisation route which could provide a viable solution to multiple disposal and environmental problems, simultaneously offering the possibili ...
DOI:
10.1007/s00216-008-2186-6
PubMed:
18516719

22. Pretreatment of woody and herbaceous biomass for enzymatic saccharification using sulfuric acid-free ethanol cooking

Author:
Teramoto, Yoshikuni; Lee, Seung-Hwan; Endo, Takashi
Source:
Bioresource technology 2008 v.99 no.18 pp. 8856-8863
ISSN:
0960-8524
Subject:
wood flour; Eucalyptus; biomass; bagasse; pretreatment; saccharification; sulfuric acid; ethanol; cellulose; water; acetic acid; enzymatic hydrolysis; glucose; catalysts; surface area; lignin; hemicellulose; autoclaving
Abstract:
... A sulfuric acid-free ethanol cooking (SFEC) treatment was developed to achieve complete saccharification of the cellulosic component of eucalyptus and baggase flour, thereby avoiding the problems associated with the use of strong acid catalysts. Cutter-milled flours were exposed to an ethanol (EtOH)/water/acetic acid mixture in an autoclave. Enzymatic hydrolysis experiments of the pretreated sampl ...
DOI:
10.1016/j.biortech.2008.04.049
PubMed:
18508263

23. Production of l (+) lactic acid by Lactobacillus delbrueckii immobilized in functionalized alginate matrices

Author:
Subba Rao, Chaganti; Prakasham, Reddy Shetty; Bhaskar Rao, Adari; Yadav, Jhillu S.
Source:
World journal of microbiology & biotechnology 2008 v.24 no.8 pp. 1411-1415
ISSN:
0959-3993
Subject:
Lactobacillus delbrueckii; acetic acid; alginate gels; batch fermentation; biomass; ethanol; immobilized cells; lactic acid; propionic acid; scanning electron microscopy
Abstract:
... The role of functionalized alginate gels as immobilized matrices in production of l (+) lactic acid by Lactobacillus delbrueckii was studied. L. delbrueckii cells immobilized in functionalized alginate beads showed enhanced bead stability and selectivity towards production of optically pure l (+) lactic acid in higher yields (1.74Yp/s) compared to natural alginate. Palmitoylated alginate beads rev ...
DOI:
10.1007/s11274-007-9623-0

24. Characterization of Spartina alterniflora as feedstock for anaerobic digestion

Author:
Yang, Shiguan; Li, Jihong; Zheng, Zheng; Meng, Zhuo
Source:
Biomass and bioenergy 2009 v.33 no.4 pp. 597-602
ISSN:
0961-9534
Subject:
Spartina alterniflora; biomass; dry matter accumulation; anaerobic digestion; fuel production; salt marsh plants; anaerobic digesters; biorefining; biogas; nutrient content; anaerobes; carbon nitrogen ratio; potassium; sodium; yields; biodegradation; volatile fatty acids; acidification; propionic acid; fermentation; acetic acid; enzymatic hydrolysis; lignocellulose; continuous systems
Abstract:
... Smooth cordgrass (Spartina alterniflora), a saltmarsh plant with high production, was characterized for its potential for use as feedstock for anaerobic digestion processes. The anaerobic digestibility and biogas yield of S. alterniflora were evaluated by anaerobic batch digestion experiments performed at 35 ± 1 °C at initial volatile solids (VS) of 6%. The nutrient content analysis indicated that ...
DOI:
10.1016/j.biombioe.2008.09.007

25. Development of a high-throughput method to evaluate the impact of inhibitory compounds from lignocellulosic hydrolysates on the growth of Zymomonas mobilis

Author:
Franden, Mary Ann; Pienkos, Philip T.; Zhang, Min
Source:
Journal of biotechnology 2009 v.144 no.4 pp. 259-267
ISSN:
0168-1656
Subject:
Zymomonas mobilis; microbial growth; biomass; lignocellulose; corn stover; hydrolysates; metabolic inhibitors; bioassays; analytical methods; turbidity; furfural; hydroxymethylfurfural; acetic acid; ethanol
Abstract:
... Overcoming the effects of hydrolysate toxicity towards ethanologens is a key technical barrier in the biochemical conversion process for biomass feedstocks to ethanol. Despite its importance, the complexity of the hydrolysate toxicity phenomena and the lack of systematic studies, analysis and tools surrounding this issue have blocked a full understanding of relationships involving toxic compounds ...
DOI:
10.1016/j.jbiotec.2009.08.006
PubMed:
19683550

26. Inhibition of Pichia stipitis fermentation of hydrolysates from olive tree cuttings

Author:
Díaz, Manuel J.; Ruiz, Encarnación; Romero, Inmaculada; Cara, Cristóbal; Moya, Manuel; Castro, Eulogio
Source:
World journal of microbiology & biotechnology 2009 v.25 no.5 pp. 891-899
ISSN:
0959-3993
Subject:
Scheffersomyces stipitis; acetic acid; activated carbon; biomass; ethanol; fermentation; formic acid; furfural; glucose; hydrolysates; olives; pretreatment; sulfuric acid; trees; yeasts; Mediterranean region
Abstract:
... The ethanolic fermentation of liquid fractions (hydrolysates) issued from dilute acid pre-treatment of olive tree biomass by Pichia stipitis is reported for the first time. On the one side, P. stipitis has been reported as the most promising naturally occurring C5 fermenting microorganism; on the other side, olive tree biomass is a renewable, low cost, and lacking of alternatives agricultural resi ...
DOI:
10.1007/s11274-009-9966-9

27. Microbial flocculation, a potentially low-cost harvesting technique for marine microalgae for the production of biodiesel

Author:
Lee, Andrew K.; Lewis, David M.; Ashman, Peter J.
Source:
Journal of applied phycology 2009 v.21 no.5 pp. 559-567
ISSN:
0921-8971
Subject:
Pleurochrysis carterae; acetates; acetic acid; algae culture; anaerobic digestion; biodiesel; biomass; carbon; correlation; flocculants; flocculation; fuel production; glucose; glycerol; harvesting; lipids; microalgae; microorganisms; mixing
Abstract:
... Microbial flocculation is investigated as a separation technique for harvesting marine microalgae for the production of biodiesel. Organic carbon (acetate, glucose or glycerine) was used as substrate for the growth of flocculating microbes in situ. Under stress, due to nutrient depletion, these microbes produced extracellular polymeric substances that promote flocculation of the coccolithophorid a ...
DOI:
10.1007/s10811-008-9391-8

28. Pentachlorophenol (PCP) dechlorination in horizontal-flow anaerobic immobilized biomass (HAIB) reactors

Author:
Damianovic, M.H.R.Z.; Moraes, E.M.; Zaiat, M.; Foresti, E.
Source:
Bioresource technology 2009 v.100 no.19 pp. 4361-4367
ISSN:
0960-8524
Subject:
acetic acid; adsorption; biomass; chemical oxygen demand; dechlorination; effluents; foams; formic acid; glucose; metabolites; pentachlorophenol; polyurethanes; sludge
Abstract:
... This study verifies the potential applicability of horizontal-flow anaerobic immobilized biomass (HAIB) reactors to pentachlorophenol (PCP) dechlorination. Two bench-scale HAIB reactors (R1 and R2) were filled with cubic polyurethane foam matrices containing immobilized anaerobic sludge. The reactors were then continuously fed with synthetic wastewater consisting of PCP, glucose, acetic acid, and ...
DOI:
10.1016/j.biortech.2009.01.076
PubMed:
19443213

29. Pilot-Scale Fermentation of Aqueous-Ammonia-Soaked Switchgrass

Author:
Isci, Asli; Himmelsbach, Jennifer N.; Strohl, John; Pometto, Anthony L. III; Raman, D. Raj; Anex, Robert P.
Source:
Applied biochemistry and biotechnology 2009 v.157 no.3 pp. 453-462
ISSN:
0273-2289
Subject:
Panicum virgatum; laboratories; ammonia; fermentation; acetic acid; bioreactors; ammonium hydroxide; cellulose; ethanol production; pretreatment; temperature; biomass; ethanol; saccharification; lactic acid
Abstract:
... Aqueous-ammonia-steeped switchgrass was subject to simultaneous saccharification and fermentation (SSF) in two pilot-scale bioreactors (50- and 350-L working volume). Switchgrass was pretreated by soaking in ammonium hydroxide (30%) with solid to liquid ratio of 5 L ammonium hydroxide per kilogram dry switchgrass for 5 days in 75-L steeping vessels without agitation at ambient temperatures (15 to ...
DOI:
10.1007/s12010-008-8235-y
PubMed:
18716923

30. Production of hydrogen, alkanes and polyols by aqueous phase processing of wood-derived pyrolysis oils

Author:
Tushar P. Vispute; George W. Huber
Source:
Green chemistry 2009 v.11 no.9 pp. 1433-1445
ISSN:
1463-9270
Subject:
acetic acid; aluminum oxide; biomass; carbon; catalysts; furfural; gases; glycols; green chemistry; hydrochloric acid; hydrogen; hydrogenation; internal combustion engines; lignocellulose; liquids; methane; models; platinum; pyrolysis oils; ruthenium; sorbitol; temperature
Abstract:
... Pyrolysis oils are the cheapest liquid fuel derived from lignocellulosic biomass. However, pyrolysis oils are a very poor quality liquid fuel that cannot be used in conventional diesel and internal combustion engines. In this paper we show that hydrogen, alkanes (ranging from C₁ to C₆) and polyols (ethylene glycol, 1,2-propanediol, 1,4-butanediol) can be produced from the aqueous fraction of wood- ...
DOI:
10.1039/b912522c

31. A glycerol-free process to produce biodiesel by supercritical methyl acetate technology: An optimization study via Response Surface Methodology

Author:
Tan, Kok Tat; Lee, Keat Teong; Mohamed, Abdul Rahman
Source:
Bioresource technology 2010 v.101 no.3 pp. 965-969
ISSN:
0960-8524
Subject:
palm oils; acetic acid; mathematical models; glycerol; triacylglycerols; transesterification; regression analysis; response surface methodology; triacetin; biodiesel; biomass
Abstract:
... In this study, fatty acid methyl esters (FAME) have been successfully produced from transesterification reaction between triglycerides and methyl acetate, instead of alcohol. In this non-catalytic supercritical methyl acetate (SCMA) technology, triacetin which is a valuable biodiesel additive is produced as side product rather than glycerol, which has lower commercial value. Besides, the propertie ...
DOI:
10.1016/j.biortech.2009.09.004
PubMed:
19773156

32. A review of the substrates used in microbial fuel cells (MFCs) for sustainable energy production

Author:
Pant, Deepak; Van Bogaert, Gilbert; Diels, Ludo; Vanbroekhoven, Karolien
Source:
Bioresource technology 2010 v.101 no.6 pp. 1533-1543
ISSN:
0960-8524
Subject:
electricity; acetic acid; solar radiation; distillery effluents; textile mill effluents; glucose; brewing industry; landfill leachates; bioenergy; raw materials; starch; cellulose; lignocellulosic wastes; microbial fuel cells; biomass; wastewater; chitin
Abstract:
... Microbial fuel cells (MFCs) have gained a lot of attention in recent years as a mode of converting organic waste including low-strength wastewaters and lignocellulosic biomass into electricity. Microbial production of electricity may become an important form of bioenergy in future because MFCs offer the possibility of extracting electric current from a wide range of soluble or dissolved complex or ...
DOI:
10.1016/j.biortech.2009.10.017
PubMed:
19892549

33. Development and validation of a fast high pressure liquid chromatography method for the analysis of lignocellulosic biomass hydrolysis and fermentation products

Author:
Scarlata, Christopher J.; Hyman, Deborah A.
Source:
Journal of chromatography 2010 v.1217 no.14 pp. 2082-2087
ISSN:
0021-9673
Subject:
corn stover; biomass; acid hydrolysis; lignocellulose; high performance liquid chromatography; ion exchange chromatography; cation exchange resins; chemical analysis; acetic acid; ethanol; hydroxymethylfurfural; furfural
Abstract:
... A simple, precise, and accurate 10-min high pressure liquid chromatography (HPLC) method was developed and validated for the analysis of organic acids, alcohols, and furans from processing biomass into renewable fuels. The method uses an H⁺ form cation-exchange resin stationary phase that has a five-fold shorter analysis time versus that in the traditional method. The new method was used for the a ...
DOI:
10.1016/j.chroma.2010.01.061
PubMed:
20202640

34. Effect of Extruder Parameters and Moisture Content of Switchgrass, Prairie Cord Grass on Sugar Recovery from Enzymatic Hydrolysis

Author:
Karunanithy, Chinnadurai; Muthukumarappan, Kasiviswanathan
Source:
Applied biochemistry and biotechnology 2010 v.162 no.6 pp. 1785-1803
ISSN:
0273-2289
Subject:
Panicum virgatum; acetic acid; biomass; enzymatic hydrolysis; extrusion; glucose; glycerol; grasses; statistical analysis; temperature; water content; xylose
Abstract:
... Research on biomass pretreatment to enhance enzymatic digestibility has been done for more than decades, but a viable continuous pretreatment method needs to be developed. Extrusion has the potential to be a viable continuous pretreatment method. This study investigated the effect of compression ratio (2:1 and 3:1), screw speed (50, 100, and 150 rpm), and barrel temperature (50, 100, and 150 °C) o ...
DOI:
10.1007/s12010-010-8959-3
PubMed:
20419510

35. Effect of acetic acid and pH on the cofermentation of glucose and xylose to ethanol by a genetically engineered strain of Saccharomyces cerevisiae

Author:
Casey, Elizabeth; Sedlak, Miroslav; Ho, Nancy W.Y.; Mosier, Nathan S.
Source:
FEMS yeast research 2010 v.10 no.4 pp. 385-393
ISSN:
1567-1356
Subject:
Saccharomyces cerevisiae; acetic acid; bioenergy industry; biomass; ethanol; ethanol production; fermentation; genetic engineering; genetically engineered microorganisms; glucose; hemicellulose; hydrolysates; pH; xylose; yeasts
Abstract:
... A current challenge of the cellulosic ethanol industry is the effect of inhibitors present in biomass hydrolysates. Acetic acid is an example of one such inhibitor that is released during the pretreatment of hemicellulose. This study examined the effect of acetic acid on the cofermentation of glucose and xylose under controlled pH conditions by Saccharomyces cerevisiae 424A(LNH-ST), a genetically ...
DOI:
10.1111/j.1567-1364.2010.00623.x
PubMed:
20402796

36. Ethanol Production from Orange Peels: Two-Stage Hydrolysis and Fermentation Studies Using Optimized Parameters through Experimental Design

Author:
Oberoi, Harinder Singh; Vadlani, Praveen Venkata; Madl, Ronald L.; Saida, Lavudi; Abeykoon, Jithma P.
Source:
Journal of agricultural and food chemistry 2010 v.58 no.6 pp. 3422-3429
ISSN:
0021-8561
Subject:
chemical concentration; temperature; acetic acid; fermentation; yields; phenolic compounds; orange peels; ethanol production; pretreatment; pH; biofuels; hydrolysis; response surface methodology; powders; biomass; ethanol; hydrolysates; sugar content; hydroxymethylfurfural
Abstract:
... Orange peels were evaluated as a fermentation feedstock, and process conditions for enhanced ethanol production were determined. Primary hydrolysis of orange peel powder (OPP) was carried out at acid concentrations from 0 to 1.0% (w/v) at 121 °C and 15 psi for 15 min. High-performance liquid chromatography analysis of sugars and inhibitory compounds showed a higher production of hydroxymethyfurfur ...
DOI:
10.1021/jf903163t
PubMed:
20158208

37. Heterologous expression of phosphoenolpyruvate carboxylase enhances the phosphate solubilizing ability of fluorescent pseudomonads by altering the glucose catabolism to improve biomass yield

Author:
Buch, Aditi; Archana, G.; Naresh Kumar, G.
Source:
Bioresource technology 2010 v.101 no.2 pp. 679-687
ISSN:
0960-8524
Subject:
Synechococcus elongatus; phosphoenolpyruvate carboxylase; transgenes; genetic transformation; gene overexpression; pyruvate carboxylase; oxaloacetic acid; phosphates; solubilization; Pseudomonas fluorescens; plant growth-promoting rhizobacteria; glucose; carbohydrate metabolism; oxidation; phosphorylation; biomass; gluconic acid; pyruvic acid; acetic acid; rhizosphere bacteria; microbial physiology
Abstract:
... The Synechococcus elongatus PCC 6301 phosphoenolpyruvate carboxylase (ppc) gene was constitutively overexpressed in fluorescent pseudomonads, to increase the supply of oxaloacetate, a crucial anabolic precursor and an intermediate in biosynthesis of organic acids implicated in phosphate (P) solubilization. Pseudomonas fluorescens ATCC 13525, transformed with pAB3 plasmid containing the ppc gene sh ...
DOI:
10.1016/j.biortech.2009.08.075
PubMed:
19767200

38. Influence of High Solid Concentration on Enzymatic Hydrolysis and Fermentation of Steam-Exploded Corn Stover Biomass

Author:
Lu, Yifeng; Wang, Yonghong; Xu, Guoqian; Chu, Ju; Zhuang, Yingping; Zhang, Siliang
Source:
Applied biochemistry and biotechnology 2010 v.160 no.2 pp. 360-369
ISSN:
0273-2289
Subject:
enzymatic hydrolysis; biomass; corn stover; batch fermentation; ethanol production; lignocellulose; Saccharomyces cerevisiae; yields; solids; glucose; acetic acid; pretreatment; steaming
Abstract:
... Steam-exploded corn stover biomass was used as the substrate for fed-batch separate enzymatic hydrolysis and fermentation (SHF) to investigate the solid concentration ranging from 10% to 30% (w/w) on the lignocellulose enzymatic hydrolysis and fermentation. The treatment of washing the steam-exploded material was also evaluated by experiments. The results showed that cellulose conversion changed l ...
DOI:
10.1007/s12010-008-8306-0
PubMed:
18626577

39. Inhibition effects on fermentation of hardwood extracted hemicelluloses by acetic acid and sodium

Author:
Walton, Sara; Heiningen, Adriaan van; Walsum, Peter van
Source:
Bioresource technology 2010 v.101 no.6 pp. 1935-1940
ISSN:
0960-8524
Subject:
biomass; renewable resources; hardwood; wood chips; hemicellulose; acetic acid; solvents; fermentation; Escherichia coli; kraft pulping; waste liquors
Abstract:
... Extraction of hemicellulose from hardwood chips prior to pulping is a possible method for producing ethanol and acetic acid in an integrated forest bio-refinery, adding value to wood components normally relegated to boiler fuel. Hemicellulose was extracted from hardwood chips using green liquor, a pulping liquor intermediate consisting of aqueous NaOH, Na₂CO₃, and Na₂S, at 160°C, held for 110min i ...
DOI:
10.1016/j.biortech.2009.10.043
PubMed:
19944597

40. Metabolic analysis of the removal of formic acid by unacclimated activated sludge

Author:
Viggi, Carolina Cruz; Dionisi, Davide; Miccheli, Alfredo; Valerio, Mariacristina; Majone, Mauro
Source:
Water research 2010 v.44 no.11 pp. 3393-3400
ISSN:
0043-1354
Subject:
acetic acid; activated sludge; biomass; formalin; formic acid; nuclear magnetic resonance spectroscopy; oxygen; serine; wastewater treatment
Abstract:
... This paper investigates the removal of formic acid by unacclimated biomass from a municipal activated sludge wastewater treatment plant. The biomass was initially able to remove formic acid, but its removal rate and Oxygen Uptake Rate (OUR) decreased with time, until formic acid removal stopped before the formic acid had been exhausted. Formaldehyde was removed in a similar way, whereas the same b ...
DOI:
10.1016/j.watres.2010.03.032
PubMed:
20417951

41. Methane production from rice straw pretreated by a mixture of acetic-propionic acid

Author:
Zhao, Rui; Zhang, Zhenya; Zhang, Ruiqin; Li, Miao; Lei, Zhongfang; Utsumi, Motoo; Sugiura, Norio
Source:
Bioresource technology 2010 v.101 no.3 pp. 990-994
ISSN:
0960-8524
Subject:
acetic acid; renewable energy sources; methane production; delignification; hydrolysates; raw materials; enzymatic hydrolysis; propionic acid; rice straw; biomass; acid treatment; beta-glucosidase; batch fermentation
Abstract:
... Rice straw was treated with a mixed solution of acetic acid and propionic acid to enhance its biodegradability. The effect of acid concentration, pretreatment time, and the ratio of solid to liquid on the delignification performance of rice straw were investigated. It was found that the optimal conditions for hydrolysis were 0.75mol/L acid concentration, 2h pretreatment time and 1:20 solid to liqu ...
DOI:
10.1016/j.biortech.2009.09.020
PubMed:
19804968

42. Methods for mitigation of bio-oil extract toxicity

Author:
Chan, Jacky K.S.; Duff, Sheldon J.B.
Source:
Bioresource technology 2010 v.101 no.10 pp. 3755-3759
ISSN:
0960-8524
Subject:
lignocellulose; biomass; pyrolysis; biofuels; extraction; solvents; acid hydrolysis; sulfuric acid; hydrolysates; glucose; alcoholic fermentation; ethanol production; acetic acid; yeasts
Abstract:
... Levoglucosan (1,6-anhydro-β-d-glucopyranose) and other anhydrosugars can be produced in significant quantities during fast pyrolysis of lignocellulosic material. Levoglucosan can be extracted and hydrolyzed to produce fermentable glucose, however co-extraction of fermentation inhibitors can reduce ethanol yields. This work was aimed at evaluating various methods for mitigating the toxicity of bio- ...
DOI:
10.1016/j.biortech.2009.12.054
PubMed:
20106661

43. Pretreatment of Rice Straw by a Hot-Compressed Water Process for Enzymatic Hydrolysis

Author:
Yu, Guoce; Yano, Shinichi; Inoue, Hiroyuki; Inoue, Seiichi; Endo, Takashi; Sawayama, Shigeki
Source:
Applied biochemistry and biotechnology 2010 v.160 no.2 pp. 539-551
ISSN:
0273-2289
Subject:
acetic acid; biomass; cost effectiveness; enzymatic hydrolysis; furfural; glucans; glucose; lignocellulose; oligosaccharides; raw materials; rice straw; temperature; xylan; xylose
Abstract:
... Hot-compressed water (HCW) is among several cost-effective pretreatment processes of lignocellulosic biomass for enzymatic hydrolysis. The present work investigated the characteristics of HCW pretreatment of rice straw including sugar production and inhibitor formation in the liquid fraction and enzymatic hydrolysis of pretreated material. Pretreatment was carried out at a temperature ranging from ...
DOI:
10.1007/s12010-008-8420-z
PubMed:
19125228

44. Production of jet and diesel fuel range alkanes from waste hemicellulose-derived aqueous solutions

Author:
Rong Xing; Ayyagari V. Subrahmanyam; Hakan Olcay; Wei Qi; G. Peter van Walsum; Hemant Pendse; George W. Huber
Source:
Green chemistry 2010 v.12 no.11 pp. 1933-1946
ISSN:
1463-9270
Subject:
acetic acid; acetone; acid hydrolysis; alkanes; aqueous solutions; arabinose; biomass; biorefining; boilers; byproducts; catalysts; catalytic activity; condensation reactions; diesel fuel; formic acid; furfural; glucose; green chemistry; hardwood; hemicellulose; hydrogenation; industry; lactic acid; prices; pulp; raw materials; ruthenium; tetrahydrofuran; trees; wastes; wood processing; xylose; Northeastern United States
Abstract:
... In this paper we report a novel four-step process for the production of jet and diesel fuel range alkanes from hemicellulose extracts derived from northeastern hardwood trees. The extract is representative of a byproduct that could be produced by wood-processing industries such as biomass boilers or pulp mills in the northeastern U.S. The hemicellulose extract tested in this study contained mainly ...
DOI:
10.1039/c0gc00263a

45. Second-generation bioethanol from eucalypt sulphite spent liquor

Author:
Xavier, Ana M.R.B.; Correia, Mariana F.; Pereira, Susana R.; Evtuguin, Dmitry V.
Source:
Bioresource technology 2010 v.101 no.8 pp. 2755-2761
ISSN:
0960-8524
Subject:
sulfite liquor; chemical composition; hemicellulose; acetic acid; renewable energy sources; solid state fermentation; hardwood; xylose; Eucalyptus globulus; alcoholic fermentation; sulfite pulping; ethanol production; Scheffersomyces stipitis; biomass; deacidification
Abstract:
... The spent liquor from acidic sulphite pulping of Eucalyptus globulus (HSSL) is the side product from sulphite pulp production and besides sulphonated lignin contains sugars from degraded hemicelluloses, mainly pentoses. Pichia stipitis fermentation of these sugars for bioethanol production was the primary goal of this work. The increasing of HSSL proportion in fermentation media affected negativel ...
DOI:
10.1016/j.biortech.2009.11.092
PubMed:
20045313

46. Utilization of porous dolomite pellets for the catalytic decomposition of acetic acid

Author:
Miao, Yelian; Xue, Jun; Xia, Fajun; Yin, Xiuli; Wu, Chuangzhi
Source:
Biomass and bioenergy 2010 v.34 no.12 pp. 1855-1860
ISSN:
0961-9534
Subject:
dolomite; acetic acid; pollution control; fuel production; porosity; catalysts; clay; byproducts; strength (mechanics); pellets; temperature; biomass; gasification; carboxymethylcellulose
Abstract:
... Catalytic decomposition of tar is a novel technology to clean the gas produced by biomass gasification. The purpose of the present research work was to develop strong and porous pellets of dolomite catalyst for tar decomposition. Porous dolomite pellets of 3 mm in diameter and 4 mm in height were prepared with dolomite, carboxyl methyl cellulose (CMC) and clay. The mechanical strength, the pore ra ...
DOI:
10.1016/j.biombioe.2010.07.019

47. Acetic acid and lithium chloride effects on hydrothermal carbonization of lignocellulosic biomass

Author:
Joan G. Lynam; Charles J. Coronella; Wei Yan; Mohammad T. Reza; Victor R. Vasquez
Source:
Bioresource technology 2011 v.102 no.10 pp. 6192-6199
ISSN:
0960-8524
Subject:
acetic acid; energy content; energy; heat; renewable resources; lithium chloride; feedstocks; biomass; additives
Abstract:
... As a renewable non-food resource, lignocellulosic biomass has great potential as an energy source or feedstock for further conversion. However, challenges exist with supply logistics of this geographically scattered and perishable resource. Hydrothermal carbonization treats any kind of biomass in 200 to 260°C compressed water under an inert atmosphere to produce a hydrophobic solid of reduced mass ...
DOI:
10.1016/j.biortech.2011.02.035
PubMed:
21411315

48. Adsorptive removal of fermentation inhibitors from concentrated acid hydrolyzates of lignocellulosic biomass

Author:
Tuomo Sainio; Irina Turku; Jari Heinonen
Source:
Bioresource technology 2011 v.102 no.10 pp. 6048-6057
ISSN:
0960-8524
Subject:
acetic acid; activated carbon; adsorption; biomass; cation exchange resins; ethanol; fermentation; hydroxymethylfurfural; lignocellulose; polymers; sorption isotherms
Abstract:
... Adsorptive purification of concentrated acid hydrolyzate of lignocellulose was investigated. Cation exchange resin (CS16GC), neutral polymer adsorbent (XAD-16), and granulated activated carbon (GAC) were studied to remove furfural, HMF, and acetic acid from a synthetic hydrolyzate containing 20wt.% H₂SO₄. Adsorption isotherms were determined experimentally. Loading and regeneration were investigat ...
DOI:
10.1016/j.biortech.2011.02.107
PubMed:
21441022

49. Analysis of liquid and solid products from liquefaction of paulownia in hot-compressed water

Author:
Peiqin Sun; Mingxing Heng; Shao-Hui Sun; Junwu Chen
Source:
Energy conversion and management 2011 v.52 no.2 pp. 924-933
ISSN:
0196-8904
Subject:
Fourier transform infrared spectroscopy; Paulownia; acetic acid; aldehydes; alkanes; autoclaves; benzene; biomass; carbohydrates; catalysts; esters; fuels; gas chromatography; industrial applications; liquefaction; mass spectrometry; oils; phenol; stainless steel; temperature
Abstract:
... Biomass has been proposed to be an alternative source of fuels for industrial applications. The liquefaction of paulownia was studied in hot-compressed water with iron catalyst at temperatures ranging from 280 to 360°C, using a 1000ml stainless steel autoclave with a magnetic stirrer. With an increase of the reaction temperature, the yield of heavy oil increased and then decreased. The maximum yie ...
DOI:
10.1016/j.enconman.2010.08.020

50. Antimicrobial textile treated with chitosan from Aspergillus niger mycelial waste

Author:
Ahmed A. Tayel; Shaaban H. Moussa; Wael F. El-Tras; Nihal M. Elguindy; Klaus Opwis
Source:
International journal of biological macromolecules 2011 v.49 no.2 pp. 241-245
ISSN:
0141-8130
Subject:
Aspergillus niger; Candida albicans; Escherichia coli; Fourier transform infrared spectroscopy; acetic acid; anti-infective properties; biomass; cell walls; chitosan; citric acid; cotton fabric; durability; fungi; molecular weight; mycelium; shrimp; solubility; wastes
Abstract:
... The waste biomass of Aspergillus niger, following citric acid production, was used as a source for fungal chitosan extraction. The produced chitosan was characterized with deacetylation degree of 89.6%, a molecular weight of 25,000dalton, 97% solubility in 1% acetic acid solution and comparable FT-IR spectra to standard shrimp chitosan. Fungal chitosan was applied as a cotton fabric finishing agen ...
DOI:
10.1016/j.ijbiomac.2011.04.023

51. Batch and continuous culture-based selection strategies for acetic acid tolerance in xylose-fermenting Saccharomyces cerevisiae

Author:
Wright, Jeremiah; Bellissimi, Eleonora; de Hulster, Erik; Wagner, Andreas; Pronk, Jack T.; van Maris, Antonius J.A.
Source:
FEMS yeast research 2011 v.11 no.3 pp. 299-306
ISSN:
1567-1356
Subject:
Saccharomyces cerevisiae; acetic acid; acid tolerance; acidification; biomass; engineering; ethanol production; hydrolysates; lignocellulose; pH; xylose; yeasts
Abstract:
... Acetic acid tolerance of Saccharomyces cerevisiae is crucial for the production of bioethanol and other bulk chemicals from lignocellulosic plant-biomass hydrolysates, especially at a low pH. This study explores two evolutionary engineering strategies for the improvement of acetic acid tolerance of the xylose-fermenting S. cerevisiae RWB218, whose anaerobic growth on xylose at pH 4 is inhibited at ...
DOI:
10.1111/j.1567-1364.2011.00719.x

52. Bioconversion of Saccharum spontaneum (wild sugarcane) hemicellulosic hydrolysate into ethanol by mono and co-cultures of Pichia stipitis NCIM3498 and thermotolerant Saccharomyces cerevisiae-VS₃

Author:
Anuj K. Chandel; Om V. Singh; M. Lakshmi Narasu; L. Venkateswar Rao
Source:
New biotechnology 2011 v.28 no.6 pp. 593-599
ISSN:
1871-6784
Subject:
Saccharomyces; Saccharum spontaneum; Scheffersomyces stipitis; acetic acid; acid hydrolysis; biomass; biotransformation; coculture; ethanol; fermentation; fuels; furans; heat tolerance; hemicellulose; hydrolysates; lignocellulose; microorganisms; phenolic compounds; renewable resources; sugars
Abstract:
... The lignocellulosic biomass is a low-cost renewable resource for eco-benign liquid fuel ‘ethanol’. To resolve the hydrolysis of mixed sugars in lignocellulosic substrate Saccharum spontaneum, the microbial co-cultures of Pichia stipitis NCIM 3498 and thermotolerant Saccharomyces cerevisiae-VS₃ were analyzed for efficient bioconversion of mixed sugars into ethanol. Among the hydrolysis conditions, ...
DOI:
10.1016/j.nbt.2010.12.002

53. Biotechnological conversions of biodiesel derived waste glycerol by yeast and fungal species

Author:
Afroditi Chatzifragkou; Anna Makri; Aikaterini Belka; Stamatina Bellou; Marilena Mavrou; Maria Mastoridou; Paraskevi Mystrioti; Grace Onjaro; George Aggelis; Seraphim Papanikolaou
Source:
Energy 2011 v.36 no.2 pp. 1097-1108
ISSN:
0360-5442
Subject:
Pichia membranifaciens; Rhodotorula; Thamnidium; Yarrowia lipolytica; acetic acid; biodiesel; biomass; culture media; fatty acid composition; fermentation; gamma-linolenic acid; glycerol; mannitol; mycelium; oils; phospholipids; value added; waste utilization; yeasts
Abstract:
... Fifteen eukaryotic microorganisms were tested for their ability to assimilate biodiesel derived waste glycerol and convert it into value-added metabolic products. For this purpose yeast and Zygomycetes strains were cultivated in nitrogen-limited raw glycerol-based media (initial glycerol concentration 30 g/L). Yeasts tested accumulated restricted lipid quantities (up to ∼22%, wt/wt, in the case of ...
DOI:
10.1016/j.energy.2010.11.040

54. Cadmium Accumulation in Relation to Organic Acids and Nonprotein Thiols in Leaves of the Recently Found Cd Hyperaccumulator Rorippa globosa and the Cd-accumulating Plant Rorippa islandica

Author:
Sun, Ruilian; Zhou, Qixing; Wei, Shuhe
Source:
Journal of plant growth regulation 2011 v.30 no.1 pp. 83-91
ISSN:
0721-7595
Subject:
Rorippa; acetic acid; biomass; cadmium; hyperaccumulators; leaves; malic acid; thiols
Abstract:
... It has been proposed that organic acid and nonprotein thiol are involved in the hyperaccumulation of metals. In this study, Cd accumulation, organic acid, and nonprotein thiol production and their relationships in the leaves of Cd-hyperaccumulator Rorippa globosa were examined and compared with a closely related species, Rorippa islandica. The results showed that there was no reduction in biomass ...
DOI:
10.1007/s00344-010-9176-6

55. Characterization of primary thermal degradation features of lignocellulosic biomass after removal of inorganic metals by diverse solvents

Author:
In-Yong Eom; Kwang-Ho Kim; Jae-Young Kim; Soo-Min Lee; Hwan-Myung Yeo; In-Gyu Choi; Joon-Weon Choi
Source:
Bioresource technology 2011 v.102 no.3 pp. 3437-3444
ISSN:
0960-8524
Subject:
acetic acid; biomass; guaiacol; metals; molecular weight; phenol; powders; pyrolysis; solvents; tap water; temperature; wood
Abstract:
... Poplar wood powders were treated with distilled water, tap water, HCl and HF, respectively, to remove inorganics from the biomass and to investigate effect of demineralization processes on pyrolysis behavior of the biomass. TG and DTG revealed that maximum degradation temperatures rose slightly from 362°C for control to 372°C, 366°C and 368°C after demineralization with distilled water, HCl and HF ...
DOI:
10.1016/j.biortech.2010.10.056
PubMed:
21074420

56. Chemicals from biomass: synthesis of lactic acid by alkaline hydrothermal conversion of sorbitol

Author:
Ramírez-López, Camilo A.; Ochoa-Gómez, José R.; Gil-Río, Silvia; Gómez-Jiménez-Aberasturi, Olga; Torrecilla-Soria, Jesús
Source:
Journal of chemical technology and biotechnology 2011 v.86 no.6 pp. 867-874
ISSN:
0268-2575
Subject:
acetic acid; acrylic acid; biomass; carbon; formic acid; glyceraldehyde; green chemistry; lactic acid; oxalic acid; raw materials; sodium carbonate; sodium hydroxide; sorbitol; temperature
Abstract:
... BACKGROUND: Currently, the ‘green chemistry' philosophy is being increasingly adopted by the chemical industry and, therefore, new production procedures of valuable chemicals from biomass-derived raw materials are being sought. In this work, the synthesis of lactic acid from sorbitol under alkaline hydrothermal conditions is investigated by analyzing the influence on conversions and yields of temp ...
DOI:
10.1002/jctb.2602

57. Comparison of Amberchrom-CG161C and Dowex99 as the adsorbent of a four-zone simulated moving bed process for removal of acetic acid from biomass hydrolyzate

Author:
Hee-Geun Nam; Se-Hee Jo; Sungyong Mun
Source:
Process biochemistry 2011 v.46 no.10 pp. 2044-2053
ISSN:
1359-5113
Subject:
acetic acid; adsorbents; bioethanol; biomass; fermentation; hydrolysates; hydrolysis; sugars; sulfuric acid
Abstract:
... One of the important steps in the application of biomass to producing sugars, which can be converted into bio-ethanol and other valuable chemicals by fermentation, is to hydrolyze the biomass components by sulfuric acid. It was reported that such a hydrolysis entailed the generation of acetic acid, which has been recognized as a key impurity to be surely removed from the biomass hydrolyzate for en ...
DOI:
10.1016/j.procbio.2011.08.004

58. Effect of fractionated palm fruit shell bio-oil on seed germination

Author:
Sunarta, Sigit; Uehara, Tohru; Katoh, Sadanobu
Source:
Forest products journal 2011 v.61 no.4 pp. 326-332
ISSN:
0015-7473
Subject:
acetic acid; biofuels; biomass; oils; pyrolysis; seed germination; seeds; specific gravity; temperature; wood
Abstract:
... Palm fruit shell was pyrolyzed in a closed simple reactor. The physical and chemical properties of the pyrolytic oil (biooil) were characterized. The effect of original and fractionated bio-oil was analyzed as a germination promoting agent. Raw palm shell bio-oil character differed from that of wood and other biomass. The pyrolysis temperature caused differences in yield and acetic acid content, b ...
DOI:
10.13073/0015-7473-61.4.326

59. Effects of a phosphorus amendment and the pH of water used for watering on the mobility and phytoavailability of Cd, Pb and Zn in highly contaminated kitchen garden soils

Author:
Christophe Waterlot; Christelle Pruvot; Henri Ciesielski; Francis Douay
Source:
Ecological engineering 2011 v.37 no.7 pp. 1081-1093
ISSN:
0925-8574
Subject:
Lolium perenne; acetic acid; agricultural soils; biomass; cadmium; calcium chloride; citric acid; diammonium phosphate; emissions; grasses; hydroxyapatite; kitchen gardens; lead; pH; phosphorus; pollutants; polluted soils; shoots; soil amendments; topsoil; trees; vegetables; zinc; France
Abstract:
... Studies on two lead and zinc smelters in Northern France (Metaleurop Nord and Umicore) showed that the level of metallic contamination of kitchen garden soils is higher than the agricultural soils located in the same environment. This results most particularly from cropping practices and the addition of various products. Due to the physical and chemical parameters of these soils, the behaviour and ...
DOI:
10.1016/j.ecoleng.2010.09.001

60. Effects of furfural and acetic acid on growth and lipid production from glucose and xylose by Rhodotorula glutinis

Author:
Guochang Zhang; William Todd French; Rafael Hernandez; Earl Alley; Maria Paraschivescu
Source:
Biomass and bioenergy 2011 v.35 no.1 pp. 734-740
ISSN:
0961-9534
Subject:
Rhodotorula glutinis; acetic acid; biomass; carbon; energy; feedstocks; furfural; glucose; linoleic acid; oleic acid; palmitic acid; specific growth rate; stearic acid; xylose; yeasts
Abstract:
... Microbial conversion of lignocellulosic sugars to triacylglycerols (a biodiesel or renewable diesel feedstock) was investigated using the oleaginous yeast Rhodotorula glutinis (ATCC 15125). In the shake flask experiments, R. glutinis was first grown in a nitrogen-rich medium utilizing an artificial acid hydrolysate of lignocellulosic biomass switchgrass as the sole carbon and energy source. Once t ...
DOI:
10.1016/j.biombioe.2010.10.009

61. Effects of harvest date, wilting and inoculation on yield and forage quality of ensiling safflower (Carthamus tinctorius L.) biomass

Author:
Eugenio Cazzato; Vito Laudadio; Antonio Corleto; Vincenzo Tufarelli
Source:
Journal of the science of food and agriculture 2011 v.91 no.12 pp. 2298-2302
ISSN:
0022-5142
Subject:
Carthamus tinctorius; flowering; gases; forage yield; jars; Lactobacillus plantarum; lipids; oil crops; lactic acid; sugars; feed quality; hay; acid value; crude protein; lactic fermentation; forage production; harvest date; buds; glass; forage quality; silage making; biomass; acetic acid; wilting; pH; silage; buffering capacity; Italy
Abstract:
... BACKGROUND:Safflower (Carthamus tinctorius L.), usually grown as a source of oil crop, can be used as fodder either for hay or ensiling purposes, particularly in semi‐arid regions. RESULTS:A 2‐year trial was conducted in southern Italy to evaluate the production and forage quality of safflower biomass cv. Centennial, harvested at three different stages: 1, at complete appearance of primary buds (P ...
DOI:
10.1002/jsfa.4452
PubMed:
21547924

62. Effects of zeolites on volatile products of beech wood using analytical pyrolysis

Author:
Akeem M. Azeez; Dietrich Meier; Jürgen Odermatt; Thomas Willner
Source:
Journal of analytical and applied pyrolysis 2011 v.91 no.2 pp. 296-302
ISSN:
0165-2370
Subject:
Fagus sylvatica; acetic acid; active sites; aluminum; aluminum oxide; biomass; catalysts; chromatography; feedstocks; furfural; indenes; lignin; lignocellulose; mass spectrometry; pyrolysis; silicon; surface area; wood; zeolites
Abstract:
... Five unmodified basic and acidic zeolites have been tested in the thermo-chemical conversion of beech (Fagus sylvatica L.) using an on-line pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) system to study their effects on lignocellulose thermal degradation products. The catalysts employed were SN-27, MSN-15, MSM-15, H-ZSM-5-28 and H-ZSM-5-80 with varying Si/Al ratio between 11 and 80. Tho ...
DOI:
10.1016/j.jaap.2011.03.007

63. Enhancing denitrification using a carbon supplement generated from the wet oxidation of waste activated sludge

Author:
P.J. Strong; B. McDonald; D.J. Gapes
Source:
Bioresource technology 2011 v.102 no.9 pp. 5533-5540
ISSN:
0960-8524
Subject:
acetates; acetic acid; activated sludge; biomass; byproducts; carbon; denitrification; ethanol; inoculum; methanol; nitrates; oxidation; wastewater treatment
Abstract:
... This study compared the effect of four pure carbon supplements on biological denitrification to a liquor derived as a by-product from the wet oxidation (WO) of waste activated sludge. Sequencing batch reactors were used to acclimate sludge biomass, which was used in batch assays. Acetate, WO liquor and ethanol-supplementation generated the fastest denitrification rates. Acetate and WO liquor were ...
DOI:
10.1016/j.biortech.2010.12.025
PubMed:
21196117

64. Glycerol utilisation for the production of chemicals: Conversion to succinic acid, a combined experimental and computational study

Author:
Anestis Vlysidis; Michael Binns; Colin Webb; Constantinos Theodoropoulos
Source:
Biochemical engineering journal 2011 v.58-59 no. pp. 1-11
ISSN:
1369-703X
Subject:
Actinobacillus succinogenes; acetic acid; biodiesel; biomass; bioprocessing; bioreactors; carbon; formic acid; glycerol; models; succinic acid
Abstract:
... An effective method for the valorisation of the main by-product of biodiesel production, i.e. glycerol is investigated in this work. It involves the biological conversion of glycerol to succinic acid, a top added-value material, which can be used as a building block for the production of various commodity and specialty chemicals. Our aim is to give new insights into this bioprocess, which has so f ...
DOI:
10.1016/j.bej.2011.07.004

65. Improvement in HPLC separation of acetic acid and levulinic acid in the profiling of biomass hydrolysate

Author:
Rui Xie; Maobing Tu; Yonnie Wu; Sushil Adhikari
Source:
Bioresource technology 2011 v.102 no.7 pp. 4938-4942
ISSN:
0960-8524
Subject:
acetic acid; biomass; furfural; high performance liquid chromatography; hydrolysates; hydroxymethylfurfural; levulinic acid; sulfuric acid; temperature
Abstract:
... 5-Hydroxymethylfurfural (HMF) and furfural could be separated by the Aminex HPX-87H column chromatography, however, the separation and quantification of acetic acid and levulinic acid in biomass hydrolysate have been difficult with this method. In present study, the HPLC separation of acetic acid and levulinic acid on Aminex HPX-87H column has been investigated by varying column temperature, flow ...
DOI:
10.1016/j.biortech.2011.01.050
PubMed:
21316945

66. Influence of the interaction of components on the pyrolysis behavior of biomass

Author:
Shurong Wang; Xiujuan Guo; Kaige Wang; Zhongyang Luo
Source:
Journal of analytical and applied pyrolysis 2011 v.91 no.1 pp. 183-189
ISSN:
0165-2370
Subject:
Fourier transform infrared spectroscopy; acetic acid; biofuels; biomass; carbon dioxide; cellulose; energy requirements; fossil fuels; gas chromatography-mass spectrometry; greenhouse gas emissions; hemicellulose; lignin; phenol; pyrolysis; temperature; thermogravimetry
Abstract:
... There has been much interest in the utilization of biomass-derived fuels as substitutes for fossil fuels in meeting renewable energy requirements to reduce CO₂ emissions. In this study, the pyrolysis characteristics of biomass have been investigated using both a thermogravimetric analyzer coupled with a Fourier-transform infrared spectrometer (TG-FTIR) and an experimental pyrolyzer. Experiments ha ...
DOI:
10.1016/j.jaap.2011.02.006

67. Isolation and characterization of facultative mixotrophic ammonia-oxidizing bacteria from constructed wetlands

Author:
Soulwène Kouki; Neila Saidi; Fadhel M'hiri; Houda Nasr; Hanène Cherif; Hadda Ouzari; Abdennaceur Hassen
Source:
Journal of environmental sciences (China) 2011 v.23 no.10 pp. 1699-1708
ISSN:
1001-0742
Subject:
macrophytes; Ochrobactrum; acetic acid; ammonia; ribosomal RNA; constructed wetlands; Bordetella; absorbance; nitrogen; wastewater; phylogeny; biomass; internal transcribed spacers; oxidation; Arthrobacter; Pseudomonas; Exiguobacterium; bacteria; China
Abstract:
... Autotrophic ammonia-oxidizing bacteria (AOB) have been widely studied in constructed wetlands systems, while mixotrophic AOB have been less thoroughly examined. Heterotrophic bacteria were isolated from wastewater and rhizospheres of macrophytes of constructed wetlands, and then cultivated in a mixotrophic medium containing ammonium and acetic acid. A molecular characterization was accomplished us ...
DOI:
10.1016/S1001-0742(10)60596-7

68. Microbial removal of acetate selectively from sugar mixtures

Author:
Arun Lakshmanaswamy; Eashwar Rajaraman; Mark A. Eiteman; Elliot Altman
Source:
Journal of industrial microbiology & biotechnology 2011 v.38 no.9 pp. 1477-1484
ISSN:
1367-5435
Subject:
Escherichia coli; acetates; acetic acid; biofuels; biomass; genes; glucokinase; glucose; hemicellulose; hydrolysates; lignin; metabolic engineering; microorganisms; mutation; pretreatment; xylose
Abstract:
... Acetic acid is an unavoidable constituent of the biomass hydrolysates generated from acetylated hemicellulose and lignin, and acetate affects the performance of microbes used to convert these hydrolysates into biofuels or other biochemicals. In this study, acetate was selectively removed from synthetic mixtures of glucose and xylose using metabolically engineered Escherichia coli strains having mu ...
DOI:
10.1007/s10295-010-0932-1
PubMed:
21225311

69. Modeling and optimization of dilute nitric acid hydrolysis on corn stover

Author:
Zhang, Rui; Lu, Xuebin; Sun, Youshan; Wang, Xinying; Zhang, Shuting
Source:
Journal of chemical technology and biotechnology 2011 v.86 no.2 pp. 306-314
ISSN:
0268-2575
Subject:
acetic acid; acid hydrolysis; arabinose; biomass; catalysts; corn stover; equations; furfural; glucose; hydrolysates; lignocellulose; models; nitric acid; temperature; xylose
Abstract:
... BACKGROUND: Because of its high cost, nitric acid has not been widely employed as the catalyst for hydrolysis of lignocellulosic biomass to obtain fermentable sugars. However, recently more and more research results have reported that nitric acid was more effective than other acids for the hydrolysis of lignocellulose. Therefore, it is necessary to find an optimum condition for nitric acid pretrea ...
DOI:
10.1002/jctb.2529

70. Monitoring the microbial community during solid-state acetic acid fermentation of Zhenjiang aromatic vinegar

Author:
Wei Xu; Zhiyong Huang; Xiaojun Zhang; Qi Li; Zhenming Lu; Jinsong Shi; Zhenghong Xu; Yanhe Ma
Source:
Food microbiology 2011 v.28 no.6 pp. 1175-1181
ISSN:
0740-0020
Subject:
Acetobacter; Enterobacter; Flavobacterium; Gluconacetobacter; Lactobacillus; Pseudomonas; Saccharomyces; Sinorhizobium; Staphylococcus; acetic acid; bacteria; biomass; clones; denaturing gradient gel electrophoresis; domestication; fungi; microbial communities; monitoring; polymerase chain reaction; solid state fermentation; traditional technology; vinegars
Abstract:
... Zhenjiang aromatic vinegar is one of the most famous Chinese traditional vinegars. In this study, change of the microbial community during its fermentation process was investigated. DGGE results showed that microbial community was comparatively stable, and the diversity has a disciplinary series of changes during the fermentation process. It was suggested that domestication of microbes and unique ...
DOI:
10.1016/j.fm.2011.03.011
PubMed:
21645817

71. Mulch and Organic Herbicide Combinations for In-Row Orchard Weed Suppression

Author:
M. A. Rowley; C. V. Ransom; J. R. Reeve; B. L. Black
Source:
International journal of fruit science 2011 v.11 no.4 pp. 316-331
ISSN:
1553-8621
Subject:
Cymbopogon citratus; acetic acid; annual weeds; barley; barley straw; biomass; clove oil; glyphosate; lemon oil; oils; organic certification; paper; pelargonic acid; pesticide application; population density; seed germination; seedlings; straw mulches; weed control; wet-dry cycles; wood chips
Abstract:
... Trials were established at two locations to evaluate weed control provided by mulches and organic herbicides alone or in combination. Mulch treatments included barley straw, pine wood chips, paper, and no mulch (bare-ground control). Herbicide treatments included three organically certified herbicides: lemon grass oil (14% v/v), clove oil (8% v/v), and two rates of acetic acid (10 and 15% v/v). Ot ...
DOI:
10.1080/15538362.2011.630295

72. Műtrágyázás hatása a borsóra (Pisum sativum L.) karbonátos homoktalajon

Author:
Imre Kádár; Tamás Németh
Source:
Növénytermelés 2011 v.60 no.2 pp. 67-82
ISSN:
2060-8543
Subject:
NPK fertilizers; Pisum sativum; acetic acid; aluminum; ammonium lactate; biomass; calcium; calcium oxide; clay fraction; copper; fertilizer application; field experimentation; flowering; grain yield; growing season; humus; iron; magnesium; magnesium oxide; manganese; mineral content; nitrogen; nutrients; pH; peas; phosphorus; plowing; potassium; sandy soils; sodium; soil profiles; soil water; strontium; weather; zinc
Abstract:
... Summary In the 35th year of the long-term NPK fertilisation field experiment established on carbonated sandy soil in the Danube-Tisza mid-region in 1970, the effect of the treatments on the yield, mineral composition, element uptake of pea, as well as the characteristics of the upper soil and the 2 m soil profile were examined in 2005. The pH(H ₂O) value of the upper soil of the production site is ...
DOI:
10.1556/Novenyterm.60.2011.2.4

73. Pretreatment of biomass by torrefaction

Author:
GuiJun Wang; YongHao Luo; Jian Deng; JiangHong Kuang; YunLiang Zhang
Source:
Chinese science bulletin 2011 v.56 no.14 pp. 1442-1448
ISSN:
1001-6538
Subject:
acetic acid; biomass; carbon dioxide; cotton; energy; energy density; gases; methane; temperature; torrefaction; water content; wheat straw
Abstract:
... Agricultural biomass has some drawbacks such as high moisture content, low energy density and wide distribution and as a result, the cost of transport and storage are high. Moreover, raw biomass has poor grindability so its use in a pulverized boiler or entrained flow gasifier is difficult. Torrefaction is a mild pyrolysis process carried out at temperatures ranging from 200°C to 300°C to deal w ...
DOI:
10.1007/s11434-010-4143-y

74. Rapid quantification of major reaction products formed during thermochemical pretreatment of lignocellulosic biomass using GC–MS

Author:
James F. Humpula; Shishir P.S. Chundawat; Ramin Vismeh; A. Daniel Jones; Venkatesh Balan; Bruce E. Dale
Source:
Journal of chromatography 2011 v.879 no.13-14 pp. 1018-1022
ISSN:
1570-0232
Subject:
acetic acid; acetone; acetonitrile; ammonia; biofuels; biomass; byproducts; cell walls; corn stover; derivatization; furfural; gas chromatography-mass spectrometry; lignocellulose; liquid chromatography; methanol; solvents
Abstract:
... Accurate quantification of reaction products formed during thermochemical pretreatment of lignocellulosic biomass would lead to a better understanding of plant cell wall deconstruction for production of cellulosic biofuels and biochemicals. However, quantification of some process byproducts, most notably acetamide, acetic acid and furfural, present several analytical challenges using conventional ...
DOI:
10.1016/j.jchromb.2011.02.049

75. Removal of enzymatic and fermentation inhibitory compounds from biomass slurries for enhanced biorefinery process efficiencies

Author:
Raghu N. Gurram; Saurav Datta; Yupo J. Lin; Seth W. Snyder; Todd J. Menkhaus
Source:
Bioresource technology 2011 v.102 no.17 pp. 7850-7859
ISSN:
0960-8524
Subject:
Pinus; Saccharomyces cerevisiae; acetic acid; adsorption; biomass; biorefining; cellulose; enzymes; ethanol; ethanol production; fermentation; glucose; hydrolysis; hydroxymethylfurfural; polymers; slurries; sulfuric acid
Abstract:
... Within the biorefinery paradigm, many non-monomeric sugar compounds have been shown to be inhibitory to enzymes and microbial organisms that are used for hydrolysis and fermentation. Here, two novel separation technologies, polyelectrolyte polymer adsorption and resin-wafer electrodeionization (RW-EDI), have been evaluated to detoxify a dilute acid pretreated biomass slurry. Results showed that de ...
DOI:
10.1016/j.biortech.2011.05.043
PubMed:
21683583

76. Renewable gasoline from aqueous phase hydrodeoxygenation of aqueous sugar solutions prepared by hydrolysis of maple wood

Author:
Ning Li; Geoffrey A. Tompsett; Taiying Zhang; Jian Shi; Charles E. Wyman; George W. Huber
Source:
Green chemistry 2011 v.13 no.1 pp. 91-101
ISSN:
1463-9270
Subject:
acetic acid; acid hydrolysis; biomass; carbon; catalysts; catalytic activity; cellulose; coproducts; gasoline; glucose; green chemistry; hemicellulose; lignin; lignocellulose; octane; oxalic acid; phosphates; platinum; ruthenium; streams; sulfuric acid; water solubility; wood; xylitol; xylose; zirconium
Abstract:
... In this paper we demonstrate an integrated process for the production of high octane gasoline from maple wood by hydrolysis of maple wood into aqueous carbohydrate solutions followed by aqueous phase hydrodeoxygenation of the sugar solutions. The aqueous carbohydrate solutions were prepared by both hydrolysis in hot water and hydrolysis with dilute acids (H₂SO₄, oxalic acid). The aqueous carbohydr ...
DOI:
10.1039/c0gc00501k

77. Routes to Potential Bioproducts from Lignocellulosic Biomass Lignin and Hemicelluloses

Author:
Xiao Zhang; Maobing Tu; Michael G. Paice
Source:
BioEnergy research 2011 v.4 no.4 pp. 246-257
ISSN:
1939-1234
Subject:
acetic acid; acrylic acid; biobased products; biomass; chemical pulping; chemistry; commercialization; furfural; lactic acid; lignin; lignocellulose; manufacturing; phenol; pulp and paper industry; xylitol
Abstract:
... An essential feature of proposed fermentation-based lignocellulose to biofuel conversion processes will be the co-production of higher value chemicals from lignin and hemicellulose components. Over the years, many routes for chemical conversion of lignin and hemicelluloses have been developed by the pulp and paper industry and we propose that some of these can be applied for bioproducts manufactur ...
DOI:
10.1007/s12155-011-9147-1

78. Selective fast pyrolysis of biomass impregnated with ZnCl₂ to produce furfural: Analytical Py-GC/MS study

Author:
Qiang Lu; Chang-qing Dong; Xu-ming Zhang; Hui-yun Tian; Yong-ping Yang; Xi-feng Zhu
Source:
Journal of analytical and applied pyrolysis 2011 v.90 no.2 pp. 204-212
ISSN:
0165-2370
Subject:
acetic acid; biomass; catalytic activity; depolymerization; furfural; gas chromatography; lignin; mass spectrometry; pyrolysis; temperature
Abstract:
... A new technique was proposed to produce furfural (FF) through low-temperature fast pyrolysis of biomass impregnated with ZnCl₂. Analytical pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) experiments were performed in this study to reveal the ZnCl₂-catalyzed biomass pyrolysis and FF formation characteristics. The results revealed that the presence of ZnCl₂ decreased the temperature for th ...
DOI:
10.1016/j.jaap.2010.12.007

79. Selective fast pyrolysis of biomass impregnated with ZnCl₂: Furfural production together with acetic acid and activated carbon as by-products

Author:
Qiang Lu; Zhi Wang; Chang-qing Dong; Zhi-fei Zhang; Ying Zhang; Yong-ping Yang; Xi-feng Zhu
Source:
Journal of analytical and applied pyrolysis 2011 v.91 no.1 pp. 273-279
ISSN:
0165-2370
Subject:
acetic acid; activated carbon; biomass; byproducts; corn cobs; furfural; pyrolysis; temperature
Abstract:
... Fast pyrolysis of biomass materials impregnated with ZnCl₂ offered a promising way to obtain a liquid product rich in furfural (FF) and acetic acid (AA), and the pyrolytic solids could be used as the precursors to prepare activated carbons (ACs). In this study, a lab-scale fast pyrolysis set was designed and used for the quantitative production of the three chemicals. The maximum FF was produced f ...
DOI:
10.1016/j.jaap.2011.03.002

80. Supercritical water gasification of an aqueous by-product from biomass hydrothermal liquefaction with novel Ru modified Ni catalysts

Author:
Linghong Zhang; Pascale Champagne; Chunbao (Charles) Xu
Source:
Bioresource technology 2011 v.102 no.17 pp. 8279-8287
ISSN:
0960-8524
Subject:
acetic acid; alkalis; aqueous solutions; biomass; byproducts; carbon; catalysts; gasification; glucose; nitrogen compounds; organic wastes; sludge
Abstract:
... Supercritical water gasification (SCWG) of glucose solution (50–200g/L), a simulated aqueous organic waste (composed of glucose, acetic acid and guaiacol) and a real aqueous organic waste stream generated from a sludge hydrothermal liquefaction process was performed in a bench-scale continuous down-flow tubular reactor with novel 0.1RuNi/γ-Al₂O₃ or 0.1RuNi/activated carbon (AC) catalyst (10wt.% Ni ...
DOI:
10.1016/j.biortech.2011.06.051
PubMed:
21741235

81. Suppressiveness of steam-exploded biomass of Miscanthus sinensis var. giganteus against soil-borne plant pathogens

Author:
Ugo De Corato; Neeta Sharma; Oliviero Maccioni; Francesco Zimbardi
Source:
Crop protection 2011 v.30 no.3 pp. 246-252
ISSN:
0261-2194
Subject:
Fusarium oxysporum; Miscanthus sinensis; Phytophthora nicotianae; Pythium ultimum; Thanatephorus cucumeris; acetic acid; beans; biomass; composts; cropping systems; cucumbers; disease control; energy crops; growing media; high performance liquid chromatography; horticultural crops; horticultural soils; horticulture; lettuce; lignosulfonates; melons; peat; plant pathogenic fungi; plant protection; renewable energy sources; soil-borne diseases; tomatoes; toxicity
Abstract:
... Commercial compost is a renewable resource widely used in horticulture as an organic amendment, though its suppression against soil-borne plant pathogens remains limited. Preliminary studies conducted on the disease suppression effect of the biomass waste obtained in a steam explosion plant demonstrated positive results. Steam-Exploded Biomass (SEB) of Miscanthus sinensis var. giganteus, a herbace ...
DOI:
10.1016/j.cropro.2010.11.006

82. Techno-economic performance analysis of bio-oil based Fischer-Tropsch and CHP synthesis platform

Author:
Kok Siew Ng; Jhuma Sadhukhan
Source:
Biomass and bioenergy 2011 v.35 no.7 pp. 3218-3234
ISSN:
0961-9534
Subject:
Elaeis guineensis; acetic acid; biofuels; biomass; economies of scale; electricity; gasification; guaiacol; heat; models; production costs; pyrolysis; transportation; wood; United Kingdom
Abstract:
... The techno-economic potential of the UK poplar wood and imported oil palm empty fruit bunch derived bio-oil integrated gasification and Fischer-Tropsch (BOIG-FT) systems for the generation of transportation fuels and combined heat and power (CHP) was investigated. The bio-oil was represented in terms of main chemical constituents, i.e. acetic acid, acetol and guaiacol. The compositional model of b ...
DOI:
10.1016/j.biombioe.2011.04.037

83. The production of acetic acid from microalgae under hydrothermal conditions

Author:
Zheng Shen; Jingfei Zhou; Xuefei Zhou; Yalei Zhang
Source:
Applied energy 2011 v.88 no.10 pp. 3444-3447
ISSN:
0306-2619
Subject:
acetic acid; biomass; carbon; carbon dioxide; hydrogen peroxide; microalgae; oxidants
Abstract:
... Microalgae for carbon dioxide mitigation was applied to the production of acetic acid under hydrothermal conditions with H₂O₂ oxidant. Results showed that acetic acid was obtained with a good yield of 14.9% based on a carbon base at 300°C for 80s with 100% H₂O₂ supply. This result should be helpful to facilitate studies for developing a new green and sustainable process in order to produce acetic ...
DOI:
10.1016/j.apenergy.2010.12.060

84. A sustainable woody biomass biorefinery

Author:
Shijie Liu; Houfang Lu; Ruofei Hu; Alan Shupe; Lu Lin; Bin Liang
Source:
Biotechnology Advances 2012 v.30 no.4 pp. 785-810
ISSN:
0734-9750
Subject:
acetic acid; acid hydrolysis; arabinose; aromatic compounds; biomass; biorefining; byproducts; cellulose; ethanol; fermentation; filtration; formic acid; fractionation; furfural; galactose; glucose; hardwood; hemicellulose; hydrolysates; hydroxymethylfurfural; lignin; mannose; rhamnose; temperature; thermal degradation; wood extractives; xylose
Abstract:
... Woody biomass is renewable only if sustainable production is imposed. An optimum and sustainable biomass stand production rate is found to be one with the incremental growth rate at harvest equal to the average overall growth rate. Utilization of woody biomass leads to a sustainable economy. Woody biomass is comprised of at least four components: extractives, hemicellulose, lignin and cellulose. W ...
DOI:
10.1016/j.biotechadv.2012.01.013

85. Ammonium removal by Agrobacterium sp. LAD9 capable of heterotrophic nitrification–aerobic denitrification

Author:
Qian Chen; Jinren Ni
Source:
Journal of bioscience and bioengineering 2012 v.113 no.5 pp. 619-623
ISSN:
1389-1723
Subject:
Agrobacterium; acetic acid; bacteria; biomass; carbon; carbon nitrogen ratio; denitrification; genes; nitrate nitrogen; nitrate reductase; nitrates; nitrification; nitrite reductase; nitrites; nitrogen; nitrogen balance; pH; response surface methodology; succinic acid; temperature
Abstract:
... Characteristics of ammonium removal by a newly isolated heterotrophic nitrification–aerobic denitrification bacterium Agrobacterium sp. LAD9 were systematically investigated. Succinate and acetate were found to be the most favorable carbon sources for LAD9. Response surface methodology (RSM) analysis demonstrated that maximum removal of ammonium occurred under the conditions with an initial pH of ...
DOI:
10.1016/j.jbiosc.2011.12.012

86. An Acidic Two-Step Hydrothermal Process To Enhance Acetic Acid Production from Carbohydrate Biomass

Author:
Fang Yan; Zeng Xu; Yan Peng; Jing Zhenzi; Jin Fangming
Source:
Industrial & Engineering Chemistry Research 2012 v.51 no.12 pp. 4759-4763
ISSN:
1520-5045
Subject:
acetic acid; biomass; catalysts; engineering; fructose; glucose; hydrochloric acid; levulinic acid; oxidation; oxygen; pH; temperature
Abstract:
... An acidic two-step hydrothermal process to improve acetic acid production was investigated. In the first-step reaction, levulinic acid is formed in the presence of an acid catalyst. In the second-step reaction, the levulinic acid is converted into acetic acid via oxidation with newly supplied oxygen. The acetic acid yield from this two-step process was much higher than that without the acid cataly ...
DOI:
10.1021/ie202506c

87. Bioconversion of volatile fatty acids into lipids by the oleaginous yeast Yarrowia lipolytica

Author:
Pierre Fontanille; Vinod Kumar; Gwendoline Christophe; Régis Nouaille; Christian Larroche
Source:
Bioresource technology 2012 v.114 no. pp. 443-449
ISSN:
0960-8524
Subject:
Yarrowia lipolytica; acetic acid; biomass; biotransformation; butyric acid; carbon; glucose; glycerol; industrial byproducts; lipid content; nitrogen; vegetable oil; volatile fatty acids; yeasts
Abstract:
... The valorization of volatile fatty acids into microbial lipids by the oleaginous yeast Yarrowia lipolytica was investigated. Therefore, a two-stage fed-batch strategy was designed: the yeast was initially grown on glucose or glycerol as carbon source, then sequential additions of acetic acid under nitrogen limiting conditions were performed after glucose or glycerol exhaustion. The typical values ...
DOI:
10.1016/j.biortech.2012.02.091
PubMed:
22464419

88. Biohydrogen Production by Dark Fermentation of Starch Using Mixed Bacterial Cultures of Bacillus sp and Brevumdimonas sp.

Author:
Bao Meidan; Su Haijia; Tan Tianwei
Source:
Energy & Fuels 2012 v.26 no.9 pp. 5872-5878
ISSN:
1520-5029
Subject:
Bacillus (bacteria); acetic acid; biomass; electrolysis; energy; ethanol; fermentation; gasification; glucose; hydrogen; hydrogen production; microorganisms; raw materials; starch; steam
Abstract:
... The energy use of hydrogen is recognized for its environmental advantages. Its utilization is expected to grow significantly over the coming years, and the development of new production methods to complement or substitute the traditional steam reforming, gasification, or electrolysis will further enhance that growth. The microbial conversion of biomass is considered to be the route with the highes ...
DOI:
10.1021/ef300666m

89. Biomass torrefaction: Modeling of volatile and solid product evolution kinetics

Author:
Richard B. Bates; Ahmed F. Ghoniem
Source:
Bioresource technology 2012 v.124 no. pp. 460-469
ISSN:
0960-8524
Subject:
acetic acid; biomass; carbon dioxide; energy balance; lactic acid; models; torrefaction
Abstract:
... The aim of this work is the development of a kinetics model for the evolution of the volatile and solid product composition during torrefaction conditions between 200 and 300°C. Coupled to an existing two step solid mass loss kinetics mechanism, this model describes the volatile release kinetics in terms of a set of identifiable chemical components, permitting the solid product composition to be e ...
DOI:
10.1016/j.biortech.2012.07.018
PubMed:
23026268

90. Catalytic Hydrothermal Reforming of Water-Soluble Organics from the Pyrolysis of Biomass Using a Ni/Carbon Catalyst Impregnated with Pt

Author:
Idesh Saruul; Kudo Shinji; Norinaga Koyo; Hayashi Jun-ichiro
Source:
Energy & Fuels 2012 v.26 no.1 pp. 67-74
ISSN:
1520-5029
Subject:
acetic acid; acetone; biofuels; biomass; carbon; catalysts; catalytic activity; feedstocks; models; nickel; pyrolysis
Abstract:
... Catalytic hydrothermal reforming (CHTR) of water-soluble organics from biomass pyrolysis was studied aiming at simultaneous production of combustible gas and clean water (containing little to no organics) from the water phase of bio-oil. Reforming of the feedstock with a total organic carbon concentration (TOC) of 10 000 ppm was performed at a temperature and pressure of 350 °C and 20 MPa, respect ...
DOI:
10.1021/ef201177b

91. Characterization of Products from Torrefaction of Sprucewood and Bagasse in an Auger Reactor

Author:
Chang Sheng; Zhao Zengli; Zheng Anqing; He Fang; Huang Zhen; Li Haibin
Source:
Energy & Fuels 2012 v.26 no.11 pp. 7009-7017
ISSN:
1520-5029
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; acetic acid; bagasse; biomass; carbonization; cellulose; chemical composition; crosslinking; hemicellulose; lignin; oils; pyrolysis; thermogravimetry; torrefaction
Abstract:
... Torrefaction experiments of sprucewood and bagasse were performed in an auger reactor at 260 °C, 280 °C, and 300 °C. The chemical composition and pyrolysis behavior of the resulting torrefied biomass were examined in detail. A number of water and lightweight organic compounds were removed from biomass through torrefaction treatment. Chemical component analysis showed that more acid insoluble fiber ...
DOI:
10.1021/ef301048a

92. Characterization of fermentation of waste wheat-rye bread mashes with the addition of complex enzymatic preparations

Author:
Joanna Kawa-Rygielska; Witold Pietrzak; Anna Czubaszek
Source:
Biomass and bioenergy 2012 v.44 no. pp. 17-22
ISSN:
0961-9534
Subject:
Saccharomyces cerevisiae; acetic acid; alpha-amylase; biomass; breads; ethanol; fermentation; glucose; glycerol; maltotriose; mash; polysaccharides; proteinases; succinic acid; yeasts
Abstract:
... There were prepared mashes from wheat-rye bread residues at concentration of 32% (w/w). In a control sample amylolytic enzymes were used (α-amylase and glucoamylase). Studied samples were prepared using complex enzymatic preparations Cremix 2XL and Ceremix 6X MG containing proteases and enzymes degrading non-starch polysaccharides. Mashes were inoculated with Saccharomyces cerevisiae Ethanol Red y ...
DOI:
10.1016/j.biombioe.2012.04.016

93. Condensation of Acetol and Acetic Acid Vapor and Nitrogen Using Sprayed Aqueous Liquid

Author:
Dickey Leland C.; Boateng Akwasi A.; Goldberg Neil M.; Mullen Charles A.; Mihalcik David
Source:
Industrial & Engineering Chemistry Research 2012 v.51 no.13 pp. 5067-5072
ISSN:
1520-5045
Subject:
acetic acid; aqueous solutions; biomass; engineering; evaporation; liquids; mists; nitrogen; nitrogen content; nozzles; ovens; pyrolysis; ultrasonics; vapors
Abstract:
... A cellulose-derived fraction of biomass pyrolysis vapor was simulated by evaporating acetol and acetic acid with heated nitrogen. After generating the vapor/nitrogen mixture, it was superheated in a tube oven and condensed by contact with an aqueous mist created by an ultrasonic spray nozzle. The rates of condensation and fractions of vapor condensed were determined for various fluid flow rates to ...
DOI:
10.1021/ie2017465

94. Conditioning biomass hydrolysates by membrane extraction

Author:
David L. Grzenia; Robert W. Dong; Himanshu Jasuja; Matt J. Kipper; Xianghong Qian; S. Ranil Wickramasinghe
Source:
Journal of membrane science 2012 v.415-416 no. pp. 75-84
ISSN:
0376-7388
Subject:
acetic acid; amines; artificial membranes; biomass; electrolytes; ethanol; ethanol production; fermentation; furfural; hydrolysates; hydrophilicity; hydrophobicity; hydroxymethylfurfural; microorganisms; octanol; polypropylenes; solvents; toxicity
Abstract:
... Conditioning of biomass hydrolysates prior to fermentation is essential in the production of bioethanol. The removal of acetic acid, furfural and 5-hydroxymethylfurfural by membrane extraction has been investigated. Removal of these compounds is essential in order to maximize ethanol yields. The organic phase consisted of Alamine 336 in octanol. Ab initio calculations, coupled with the implicit co ...
DOI:
10.1016/j.memsci.2012.04.039

95. Corn stover saccharification with concentrated sulfuric acid: Effects of saccharification conditions on sugar recovery and by-product generation

Author:
Ze-Shen Liu; Xiao-Lei Wu; Kenji Kida; Yue-Qin Tang
Source:
Bioresource technology 2012 v.119 no. pp. 224-233
ISSN:
0960-8524
Subject:
temperature; acetic acid; levulinic acid; experimental design; glucose; furfural; sulfuric acid; xylose; yeasts; byproducts; formic acid; corn stover; feedstocks; biomass; solubilization; hydrolysates; saccharification; hydroxymethylfurfural
Abstract:
... Although concentrated sulfuric acid saccharification is not a novel method for breaking down lignocellulosic biomass, the process by which saccharification affects biomass decomposition, sugar recovery, and by-product generation is not well studied. The present study employed Taguchi experimental design to study the effects of seven parameters on corn stover concentrated sulfuric acid saccharifica ...
DOI:
10.1016/j.biortech.2012.05.107
PubMed:
22728786

96. Deletion of the PHO13 gene in Saccharomyces cerevisiae improves ethanol production from lignocellulosic hydrolysate in the presence of acetic and formic acids, and furfural

Author:
Keisuke Fujitomi; Tomoya Sanda; Tomohisa Hasunuma; Akihiko Kondo
Source:
Bioresource technology 2012 v.111 no. pp. 161-166
ISSN:
0960-8524
Subject:
Saccharomyces cerevisiae; acetic acid; biomass; ethanol; ethanol production; furfural; gene deletion; genes; hydrolysates; mutants; rice straw; xylose
Abstract:
... For efficient bioethanol production from lignocellulosic biomass by Saccharomyces cerevisiae, it is necessary to improve cellular tolerance to toxic compounds released during the pretreatment of biomass. The gene encoding p-nitrophenylphosphatase, PHO13, was disrupted in a recombinant xylose-fermenting S. cerevisiae strain, which improved ethanol production from xylose in the presence of three maj ...
DOI:
10.1016/j.biortech.2012.01.161
PubMed:
22357292

97. Effect of Torrefaction Temperature on Product Distribution from Two-Staged Pyrolysis of Biomass

Author:
Zheng Anqing; Zhao Zengli; Chang Sheng; Huang Zhen; He Fang; Li Haibin
Source:
Energy & Fuels 2012 v.26 no.5 pp. 2968-2974
ISSN:
1520-5029
Subject:
Fourier transform infrared spectroscopy; acetic acid; biofuels; biomass; carbonization; crosslinking; fluidized beds; gas chromatography-mass spectrometry; nuclear magnetic resonance spectroscopy; pyrolysis; stable isotopes; temperature; torrefaction; water content
Abstract:
... Two-staged biomass pyrolysis process consisting of torrefaction and subsequent fast pyrolysis is proposed to obtain high quality bio-oil. The purpose of this study is to evaluate the effect of torrefaction temperature on yield, composition, and physical properties of the liquid of torrefaction and bio-oil. Torrefaction of pine was conducted on an auger reactor at 240–320 °C with a residence time o ...
DOI:
10.1021/ef201872y

98. Effect of inulin on the growth and metabolism of a probiotic strain of Lactobacillus rhamnosus in co-culture with Streptococcus thermophilus

Author:
Ricardo Pinheiro de Souza Oliveira; Patrizia Perego; Maricê Nogueira de Oliveira; Attilio Converti
Source:
Lebensmittel-Wissenschaft + Technologie 2012 v.47 no.2 pp. 358-363
ISSN:
0023-6438
Subject:
carbon; Lactobacillus rhamnosus; lactic acid; fermentation; coculture; metabolic studies; fructose; Streptococcus thermophilus; NAD (coenzyme); citrates; diacetyl; energy; lactose; skim milk; hydrolysis; inulin; biomass; ethanol; acetic acid; galactose; probiotics; acetoin
Abstract:
... Metabolic studies are very important to improve quality of functional dairy products. For this purpose, the behaviors of pure cultures of Streptococcus thermophilus (St) and Lactobacillus rhamnosus (Lr) as well a co-culture of them (St–Lr) were investigated during skim milk fermentation, and the inulin effect as prebiotic was assessed. Lr was able to metabolize 6 g/100 g more galactose than St ...
DOI:
10.1016/j.lwt.2012.01.031

99. Effect of pre-extraction on soda-anthraquinone (AQ) pulping of rice straw

Author:
M. Sarwar Jahan; M. Shamsuzzaman; M. Mostafizur Rahman; S.M. Iqbal Moeiz; Y. Ni
Source:
Industrial crops and products 2012 v.37 no.1 pp. 164-169
ISSN:
0926-6690
Subject:
acetic acid; alkalis; biomass; bleaching; drainage; lignin; pulp; pulping; rice straw; sugars; tensile strength
Abstract:
... The effect of hot-water and alkaline pre-extraction of rice straw on soda-anthraquinone pulping was carried out. The pre-extraction with hot water at 150°C for 1h dissolved 34.7% biomass and the pre-extracted liquor comprised of 16.6% sugars, 6.7% lignin, 6.6% acetic acid and other unknown products. But the pre-extraction with 1% NaOH at 100°C for 1h dissolved 10.2% sugars, 5.1% lignin and 10% ace ...
DOI:
10.1016/j.indcrop.2011.11.035

100. Effect of pre-hydrolysis on the soda-anthraquinone pulping of corn stalks and Saccharum spontaneum (kash)

Author:
M. Sarwar Jahan; M. Mostafizur Rahman
Source:
Carbohydrate polymers 2012 v.88 no.2 pp. 583-588
ISSN:
0144-8617
Subject:
Saccharum spontaneum; acetic acid; agricultural wastes; biomass; bleaching; corn stover; drainage; fossil fuels; global warming; hemicellulose; lignin; lignocellulose; physical properties; pith; pulp; pulping; raw materials; renewable resources; sugars
Abstract:
... The limited reserves of fossil fuel and trend of global warming increase interest in renewable resources. In this circumstance, significance has been developed on the production of fuels and chemicals from biomass that will replace fossil fuel. Corn stalks and Saccharum spontaneum (kash) are agricultural wastes, which are good raw materials for pulp production. However, there are limitations in ac ...
DOI:
10.1016/j.carbpol.2012.01.005