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1. Enzymatic hydrolysis of corn stalk in a hollow fiber ultrafiltration membrane reactor

Author:
Yang, Sen; Ding, Wenyong; Chen, Hongzhang
Source:
Biomass and bioenergy 2009 v.33 no.2 pp. 332-336
ISSN:
0961-9534
Subject:
enzymatic hydrolysis,   etc   ; corn stover; ultrafiltration; biotransformation; hemicellulose; lignocellulose; steaming; chemical reactions;     Show all 8 Subjects
Abstract:
... A hollow fiber ultrafiltration (UF) membrane reactor was set up to investigate the enzymatic hydrolysis of steam-exploded corn stalk. It was found that the hydrolysis rate, as well as the reducing sugar (RS) yield, could be markedly enhanced in the UF membrane reactor due to the continuous removal of inhibitory products. Compared with traditional batch hydrolysis, the hydrolysis rate and RS yield ...
DOI:
10.1016/j.biombioe.2008.05.016

2. Optimization of hydrothermal pretreatment of wheat straw for production of bioethanol at low water consumption without addition of chemicals

Author:
Petersen, Mai Østergaard; Larsen, Jan; Thomsen, Mette Hedegaard
Source:
Biomass and bioenergy 2009 v.33 no.5 pp. 834-840
ISSN:
0961-9534
Subject:
enzymatic hydrolysis,   etc   ; wheat straw; pretreatment; hot water treatment; biofuels; ethanol production; ethanol; lignocellulose; dry matter content; continuous systems; cellulose; hemicellulose; cellulases; xylanases;     Show all 14 Subjects
Abstract:
... In the IBUS process (Integrated Biomass Utilization System) lignocellulosic biomass is converted into ethanol at high dry matter content without addition of chemicals and with a strong focus on energy efficiency. This study describes optimization of continuous hydrothermal pretreatment of wheat straw at pilot scale (up to 100 kg h-1) where six different pretreatment conditions have been investigat ...
DOI:
10.1016/j.biombioe.2009.01.004

3. Evaluation of wet air oxidation as a pretreatment strategy for bioethanol production from rice husk and process optimization

Author:
Banerjee, Saumita; Sen, Ramkrishna; Pandey, R.A.; Chakrabarti, Tapan; Satpute, Dewanand; Giri, Balendu Shekher; Mudliar, Sandeep
Source:
Biomass and bioenergy 2009 v.33 no.12 pp. 1680-1686
ISSN:
0961-9534
Subject:
enzymatic hydrolysis,   etc   ; hemicellulose; pressure; fermentation; glucose; xylose; hexoses; cellulose; rice hulls; pretreatment; ethanol production; biofuels; oxidation; air; pentoses; temperature; lignin; solubilization; prediction;     Show all 19 Subjects
Abstract:
... The pretreatment of rice husk by the wet air oxidation (WAO) technique was investigated by means of a statistically designed set of experiments. Reaction temperature, air pressure, and reaction time were the process parameters considered. WAO pretreatment of rice husk increased the cellulose content of the solid fraction by virtue of lignin removal and hemicellulose solubilization. The cellulose r ...
DOI:
10.1016/j.biombioe.2009.09.001

4. Hydrolysis of Japanese beech by batch and semi-flow water under subcritical temperatures and pressures

Author:
Lü, Xin; Saka, Shiro
Source:
Biomass and bioenergy 2010 v.34 no.8 pp. 1089-1097
ISSN:
0961-9534
Subject:
hydrolysis,   etc   ; hemicellulose; forest trees; lignocellulose; batch systems; xylooligosaccharides; fuel production; cellulose; methodology; Fagus crenata; water temperature; biofuels; extraction; forest plantations; yields; hot water treatment;     Show all 16 Subjects
Abstract:
... Hydrolysis of lignocellulosic biomass by hot-compressed water is creating an opportunity to obtain saccharides from both hemicelluloses and cellulose for biofuel production as well as saccharides production. In this work, the hydrolysis of Japanese beech (Fagus crenata) by batch and semi-flow hot-compressed water was investigated. After the treatments, the monosaccharides, oligosaccharides and dec ...
DOI:
10.1016/j.biombioe.2010.02.015

5. Evaluation of the co-product pulp from Salix viminalis energy crops

Author:
Lavoie, Jean-Michel; Capek-Menard, Eva; Chornet, Esteban
Source:
Biomass and bioenergy 2010 v.34 no.9 pp. 1342-1347
ISSN:
0961-9534
Subject:
enzymatic hydrolysis,   etc   ; energy crops; wood pulp; high performance liquid chromatography; pulping; interspecific variation; fermentation; cellulose; Salix viminalis; length; yields; hemicellulose; forest trees; quantitative analysis; biomass; lignin; chemical composition; tree age; coproducts; forest plantations; Canada;     Show all 21 Subjects
Abstract:
... Salix viminalis is among the species that are considered as promising for future energy crops in marginal lands throughout Canada. Whilst research conducted on Salix species is oriented, to a large extent, towards the hydrolytic production of sugars for fermentation, we have considered co-product fibre since it adds potential value to an integrated use of the biomass. In this study, extractives, l ...
DOI:
10.1016/j.biombioe.2010.04.023

6. Production and characterization of cellulases and xylanases of Cellulosimicrobium cellulans grown in pretreated and extracted bagasse and minimal nutrient medium M9

Author:
Song, Jian-Min; Wei, Dong-Zhi
Source:
Biomass and bioenergy 2010 v.34 no.12 pp. 1930-1934
ISSN:
0961-9534
Subject:
enzymatic hydrolysis,   etc   ; temporal variation; thermal stability; hemicellulose; lignocellulose; xylanases; alcoholic fermentation; cellulases; cellulose; sugarcane bagasse; ethanol production; pH; biodegradation; Cellulosimicrobium cellulans; extracts; temperature; enzyme activity; microbial activity;     Show all 18 Subjects
Abstract:
... Bagasse, the main coproduct in the sugar industry, has been shown to be the sole carbon source for liquid-state fermentation to produce hydrolytic enzymes (cellulases and xylanases) using Cellulosimicrobium cellulans in flask during 3 days and the enzymatic extracts obtained at different time intervals were analysed. The degradation of bagasse indicate the lignocellulolytic capacity of C. cellulan ...
DOI:
10.1016/j.biombioe.2010.08.010

7. The inhomogeneity of corn stover and its effects on bioconversion

Author:
Hongzhang, Chen; Hongqiang, Li; Liying, Liu
Source:
Biomass and bioenergy 2011 v.35 no.5 pp. 1940-1945
ISSN:
0961-9534
Subject:
enzymatic hydrolysis,   etc   ; biotransformation; cellulose; chemical composition; corn; corn stover; fractionation; hemicellulose; leaves; lignin; raw materials; solid state fermentation; steam; wood;     Show all 14 Subjects
Abstract:
... Compared with wood, corn stover (CS) is a low-value raw material. Traditionally, CS is used in whole. To develop a CS high-value utilization process, the inhomogeneity of CS and its effects on bioconversion were investigated. The results showed that the chemical compositions of parts from CS had a remarkable difference. The Standard Deviation of cellulose, hemicellulose, Klason lignin, ash of CS p ...
DOI:
10.1016/j.biombioe.2011.01.037

8. Dilute oxalic acid pretreatment for biorefining giant reed (Arundo donax L.)

Author:
Scordia, Danilo; Cosentino, Salvatore L.; Lee, Jae-Won; Jeffries, Thomas W.
Source:
Biomass and bioenergy 2011 v.35 no.7 pp. 3018-3024
ISSN:
0961-9534
Subject:
enzymatic hydrolysis,   etc   ; lignocellulose; enzymes; fermentation; xylose; cellulose; biorefining; Saccharomyces bayanus; saccharification; Scheffersomyces; grasses; hemicellulose; fermenters; yeasts; Arundo donax; cellobiose; ethanol production; temperature; biomass; oxalic acid; lignin; ethanol; Pichia; pH;     Show all 24 Subjects
Abstract:
... Biomass pretreatment is essential to overcome recalcitrance of lignocellulose for ethanol production. In the present study we pretreated giant reed (Arundo donax L.), a perennial, rhizomatous lignocellulosic grass with dilute oxalic acid. The effects of temperature (170–190 °C), acid loading (2–10% w/w) and reaction time (15–40 min) were handled as a single parameter, combined severity. We explore ...
DOI:
10.1016/j.biombioe.2011.03.046

9. Ethanol and co-product generation from pressurized batch hot water pretreated T85 bermudagrass and Merkeron napiergrass using recombinant Escherichia coli as biocatalyst

Author:
Brandon, Sarah K.; Sharma, Lekh N.; Hawkins, Gary M.; Anderson, William F.; Chambliss, C. Kevin; Doran-Peterson, Joy
Source:
Biomass and bioenergy 2011 v.35 no.8 pp. 3667-3673
ISSN:
0961-9534
Subject:
hydrolysis,   etc   ; solubilization; grasses; fermentation; hemicellulose; Cynodon dactylon; enzymes; acids; cellulose; ethanol production; Cenchrus purpureus; coproducts; biotransformation; digestibility; ethanol; aldehydes; Escherichia coli;     Show all 17 Subjects
Abstract:
... Pretreatment of grasses is required to maximize ethanol yield during fermentation. T85 bermudagrass and Merkeron napiergrass (Pennisetum purpureum Schumach.) were either left untreated or were pressurized batch hot water (PBHW) pretreated for 2 min at 230 °C at 5% w/v whole grass solids loading. Following a 24 h enzymatic digestion, untreated and PBHW pretreated grasses were evaluated for ethanol ...
DOI:
10.1016/j.biombioe.2011.05.021

10. Development of an integrated pretreatment fractionation process for fermentable sugars and lignin: Application to almond (Prunus dulcis) shell

Author:
Gong, Dachun; Holtman, Kevin M.; Franqui-Espiet, Diana; Orts, William J.; Zhao, Ruming
Source:
Biomass and bioenergy 2011 v.35 no.10 pp. 4435-4441
ISSN:
0961-9534
Subject:
enzymatic hydrolysis,   etc   ; Prunus dulcis; acetone; ammonia; biomass; cellulose; ethanol; fractionation; glucose; hemicellulose; lignin; pH; scanning electron microscopy; xylose;     Show all 14 Subjects
Abstract:
... An environmentally friendly pretreatment process was developed to fractionate cellulose, hemicellulose and lignin from almond (Prunus dulcis) shells, consisting of hot water pretreatment (HWP) coupled with organic solvent (organosolv) pretreatment of water/ethanol (OWEP). This integrated pretreatment process proved more effective on the basis of yield of fermentable sugar and lignin separation com ...
DOI:
10.1016/j.biombioe.2011.08.022

11. Kinetic characterization for hemicellulose hydrolysis of corn stover in a dilute acid cycle spray flow-through reactor at moderate conditions

Author:
Jin, Qiang; Zhang, Hongman; Yan, Lishi; Qu, Liang; Huang, He
Source:
Biomass and bioenergy 2011 v.35 no.10 pp. 4158-4164
ISSN:
0961-9534
Subject:
hydrolysis,   etc   ; activation energy; corn stover; furfural; hemicellulose; models; neutralization; sulfuric acid; temperature; xylose;     Show all 10 Subjects
Abstract:
... The kinetic characterization of hemicellulose hydrolysis of corn stover was investigated using a new reactor of dilute acid cycle spray flow-through (DCF) pretreatment. The primary purpose was to obtain kinetic data for hemicellulose hydrolysis with sulfuric acid concentrations (10–30 kg m⁻³) at relatively low temperatures (90–100 °C). A simplified kinetic model was used to describe its performanc ...
DOI:
10.1016/j.biombioe.2011.06.050

12. Catalyzed modified clean fractionation of prairie cordgrass integrated with hydrothermal post-treatment

Author:
Cybulska, Iwona; Brudecki, Grzegorz; Rosentrater, Kurt; Lei, Hanwu; Julson, James
Source:
Biomass and bioenergy 2012 v.46 pp. 389-401
ISSN:
0961-9534
Subject:
hydrolysis,   etc   ; Spartina pectinata; bioenergy; biomass; cellulose; digestibility; fractionation; glucose; hemicellulose; lignin; solvents; sulfuric acid; xylose;     Show all 13 Subjects
Abstract:
... The main purpose of this study was pretreatment of prairie cordgrass obtaining three fractions: lignin, hemicellulose and fermentable cellulose. Modified clean fractionation process (using ethyl acetate–ethanol–water mixture) was employed to extract lignin and hemicellulose fractions. Different proportions of constituents in the solvent mixture were tested. In order to improve lignin recovery, the ...
DOI:
10.1016/j.biombioe.2012.08.002

13. Methane production from solid-state anaerobic digestion of lignocellulosic biomass

Author:
Liew, Lo Niee; Shi, Jian; Li, Yebo
Source:
Biomass and bioenergy 2012 v.46 pp. 125-132
ISSN:
0961-9534
Subject:
enzymatic hydrolysis,   etc   ; anaerobic digestion; bioenergy; biomass; cellulose; corn stover; correlation; feedstocks; hemicellulose; inoculum; leaves; lignin; lignocellulose; methane; methane production; models; wastes; wheat straw; yard wastes;     Show all 19 Subjects
Abstract:
... Four lignocellulosic biomass feedstocks including corn stover, wheat straw, yard waste and leaves were evaluated for methane production via solid-state anaerobic digestion (SS-AD). Results showed that the highest methane yield was attained for corn stover (81.2 L kg⁻¹ volatile solids (VS)), followed by wheat straw (66.9 L kg⁻¹ VS), leaves (55.4 L kg⁻¹ VS) and yard waste (40.8 L kg⁻¹ VS) at a subst ...
DOI:
10.1016/j.biombioe.2012.09.014

14. Optimization of pretreatment conditions using full factorial design and enzymatic convertibility of shea tree sawdust

Author:
Ayeni, A.O.; Banerjee, S.; Omoleye, J.A.; Hymore, F.K.; Giri, B.S.; Deshmukh, S.C.; Pandey, R.A.; Mudliar, S.N.
Source:
Biomass and bioenergy 2013 v.48 pp. 130-138
ISSN:
0961-9534
Subject:
enzymatic hydrolysis,   etc   ; Vitellaria paradoxa; air; atmospheric pressure; beta-glucosidase; bioenergy; biomass; cellulose; endo-1,4-beta-glucanase; hemicellulose; hydrogen peroxide; lignin; lignocellulose; oxidation; presoaking; reducing sugars; sawdust; solubilization; statistical analysis; temperature; wood;     Show all 21 Subjects
Abstract:
... In this study alkaline wet air oxidation (WAO), alkaline peroxide assisted wet air oxidation (APAWAO), and enzymatic hydrolysis methods were evaluated for conversion of wood residue (sawdust) to reducing sugars. Cellulose content, hemicellulose solubilization, and lignin removal for WAO pretreatment conditions were optimized by statistical analysis using a 23-full factorial design with reaction te ...
DOI:
10.1016/j.biombioe.2012.10.021

15. Evaluation the efficacy of extrusion pretreatment via enzymatic digestibility and simultaneous saccharification & fermentation with rapeseed straw

Author:
Choi, Chang Ho; Kim, Jun Seok; Oh, Kyeong Keun
Source:
Biomass and bioenergy 2013 v.54 pp. 211-218
ISSN:
0961-9534
Subject:
enzymatic hydrolysis; hydrolysis,   etc   ; Brassica napus; bioenergy; biomass; cellulose; ethanol; fermentation; galactose; glucose; hemicellulose; mannose; rapeseed; saccharification; straw; temperature; xylose;     Show all 17 Subjects
Abstract:
... The efficacy of extrusion pretreatment was evaluated by enzymatic hydrolysis and simultaneous saccharification and fermentation (SSF) with straw of rapeseed, Brassica napus, an agricultural residue. An acceptable pretreatment result was obtained at a barrel temperature of 165 °C, acid concentration of 20 g L−1, liquid feeding rate of 13.4 cm3 min−1, solid feeding rate of 1.0 g min−1, screw rotatio ...
DOI:
10.1016/j.biombioe.2013.04.005

16. Mechanical and compositional characteristics of steam-treated Douglas fir (Pseudotsuga menziesii L.) during pelletization

Author:
Lam, Pak Sui; Lam, Pak Yiu; Sokhansanj, Shahab; Bi, Xiaotao T.; Lim, C.J.
Source:
Biomass and bioenergy 2013 v.56 pp. 116-126
ISSN:
0961-9534
Subject:
hydrolysis,   etc   ; Pseudotsuga menziesii; bioenergy; biomass; dimensional stability; energy; feedstocks; hardness; hemicellulose; lignin; pellets; rheological properties; steam; surface roughness; wood;     Show all 15 Subjects
Abstract:
... Rheological properties of pelletizing steam-treated Douglas fir at four different severities were investigated. Steam-treated wood pellets exhibited three compression regions that became more distinct with increasing treatment severity. Hydrolysis of hemicelluloses and condensations of lignin led to an increase in elasticity of pellets made from steam treated feedstock. The increased treatment dur ...
DOI:
10.1016/j.biombioe.2013.05.001

17. Structural and chemical analysis of process residue from biochemical conversion of wheat straw (Triticum aestivum L.) to ethanol

Author:
Hansen, M.A.T.; Jørgensen, H.; Laursen, K.H.; Schjoerring, J.K.; Felby, C.
Source:
Biomass and bioenergy 2013 v.56 pp. 572-581
ISSN:
0961-9534
Subject:
enzymatic hydrolysis,   etc   ; Triticum aestivum; bioenergy; biomass; cellulose; chemical analysis; chemical composition; enzymes; ethanol; ethanol production; feeds; heat; hemicellulose; lignin; lignocellulose; power generation; silica; wheat straw; yeasts;     Show all 19 Subjects
Abstract:
... Biochemical conversion of lignocellulose to fermentable carbohydrates for ethanol production is now being implemented in large-scale industrial production. Applying hydrothermal pretreatment and enzymatic hydrolysis for the conversion process, a residue containing substantial amounts of lignin will be generated. So far little is known about the composition of this lignin residue which at present i ...
DOI:
10.1016/j.biombioe.2013.06.007

18. Robust enzymatic saccharification of a Douglas-fir forest harvest residue by SPORL

Author:
Leu, Shao-Yuan; Zhu, J.Y.; Gleisner, Roland; Sessions, John; Marrs, Gevan
Source:
Biomass and bioenergy 2013 v.59 pp. 393-401
ISSN:
0961-9534
Subject:
enzymatic hydrolysis; hydrolysis,   etc   ; Pseudotsuga menziesii; bioenergy; biomass; biorefining; cellulose; cost effectiveness; delignification; endo-1,4-beta-glucanase; feedstocks; forests; furfural; glucose; hemicellulose; hydroxymethylfurfural; lignin; plant residues; saccharification; sodium bisulfite; sulfuric acid;     Show all 21 Subjects
Abstract:
... Forest harvest residues can be a cost-effective feedstock for a biorefinery, but the high lignin content of forest residues is a major barrier for enzymatic sugar production. Sulfite pretreatment to overcome strong recalcitrance of lignocelluloses (SPORL) was applied to a Douglas-fir (Pseudotsuga menziesii (Mirb) Franco var. menziesii) forest residue in a range of sulfite and acid loadings at 165  ...
DOI:
10.1016/j.biombioe.2013.08.014

19. Changes in the composition of the main polysaccharide groups of oil seed rape straw following steam explosion and saccharification

Author:
Ryden, Peter; Gautier, Alizée; Wellner, Nikolaus; Tapp, Henri S.; Horn, Svein J.; Eijsink, Vincent G.H.; Waldron, Keith W.
Source:
Biomass and bioenergy 2014 v.61 pp. 121-130
ISSN:
0961-9534
Subject:
acid hydrolysis,   etc   ; Brassica napus; Fourier transform infrared spectroscopy; cell walls; cellulose; digestion; discriminant analysis; glucose; hemicellulose; least squares; lignin; models; pectins; saccharification; straw; sugar content;     Show all 16 Subjects
Abstract:
... The composition of oil seed rape straw treated by steam explosion with increasing severity was investigated before and after saccharification. Chemical changes were monitored by FTIR-ATR spectroscopy. Sugar contents were determined after acid hydrolysis. Discriminant analysis of the spectra before and after digestion showed the main compositional changes are losses of carbohydrates and a subsequen ...
DOI:
10.1016/j.biombioe.2013.12.003

20. An investigation on the characteristics of cellulose nanocrystals from Pennisetum sinese

Author:
Lu, Qi-lin; Tang, Li-rong; Wang, Siqun; Huang, Biao; Chen, Yan-dan; Chen, Xue-rong
Source:
Biomass and bioenergy 2014 v.70 pp. 267-272
ISSN:
0961-9534
Subject:
acid hydrolysis,   etc   ; Fourier transform infrared spectroscopy; Pennisetum; X-ray diffraction; bleaching; cellulose; chemical treatment; crystal structure; hemicellulose; lignin; nanocrystals; thermal stability; thermogravimetry; transmission electron microscopy; zeta potential;     Show all 15 Subjects
Abstract:
... The aim of this study was to explore the utilization of Pennisetum sinese as cellulose source for the preparation of cellulose nanocrystals (CNC). The cellulose was extracted from P. sinese by chemical treatment and bleaching, and obtained cellulose nanocrystals by acid hydrolysis. Transmission electron microscopy (TEM) showed that CNC were rod-like with the diameter of 20–30 nm and the length of ...
DOI:
10.1016/j.biombioe.2014.09.012