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- Author:
- Chen, Chunyan; Xiao, Zeyi; Tang, Xiaoyu; Cui, Haidi; Zhang, Junqing; Li, Weijia; Ying, Chao
- Source:
- Bioresource technology 2013 v.128 pp. 246-251
- ISSN:
- 0960-8524
- Subject:
- Clostridium acetobutylicum; butanol; continuous fermentation; glucose; microorganisms; pervaporation
- Abstract:
- ... Acetone–butanol–ethanol (ABE) fermentation by combining a PDMS membrane bioreactor and Clostridium acetobutylicum was studied, and a long continuous and closed-circulating fermentation (CCCF) system has been achieved. Two cycles of experiment were conducted, lasting for 274h and 300h, respectively. The operation mode of the first cycle was of fermentation intermittent coupling with pervaporation, ...
- DOI:
- 10.1016/j.biortech.2012.10.077
- PubMed:
- 23196246
-
https://dx.doi.org/10.1016/j.biortech.2012.10.077
- Author:
- Frascari, Dario; Fraraccio, Serena; Nocentini, Massimo; Pinelli, Davide
- Source:
- Bioresource technology 2013 v.128 pp. 479-486
- ISSN:
- 0960-8524
- Subject:
- Lepidium sativum; aquifers; biodegradation; bioreactors; chlorides; chloroform; dechlorination; ecotoxicology; electrons; ethane; methane; propane; toxicity; trichloroethylene; vinyl chloride
- Abstract:
- ... A novel aerobic/anaerobic/aerobic treatment was implemented in batch reactors containing aquifer materials from a site contaminated by tetrachloroethylene (PCE), trichloroethylene (TCE), vinyl chloride (VC), 1,1,2-trichloroethane (1,1,2-TCA) and chloroform (CF). Consortia grown aerobically on methane, propane, n-pentane and n-hexane completely biodegraded the chlorinated solvent mixture, via aerob ...
- DOI:
- 10.1016/j.biortech.2012.10.026
- PubMed:
- 23201903
-
https://dx.doi.org/10.1016/j.biortech.2012.10.026
- Author:
- Agrawal, Ankit; Chakraborty, Saikat
- Source:
- Bioresource technology 2013 v.128 pp. 72-80
- ISSN:
- 0960-8524
- Subject:
- temperature; microalgae; proteins; thermogravimetry; carbohydrates; heat; activation energy; lipids; combustion; pyrolysis; Chlorella vulgaris; biomass
- Abstract:
- ... This work uses thermo-gravimetric, differential thermo-gravimetric and differential thermal analyses to evaluate the kinetics of pyrolysis (in inert/N2 atmosphere) and (oxidative) combustion of microalgae Chlorella vulgaris by heating from 50 to 800°C at heating rates of 5–40°C/min. This study shows that combustion produces higher biomass conversion than pyrolysis, and that three stages of decompo ...
- DOI:
- 10.1016/j.biortech.2012.10.043
- PubMed:
- 23196224
-
https://dx.doi.org/10.1016/j.biortech.2012.10.043
- Author:
- Saeed, Tanveer; Sun, Guangzhi
- Source:
- Bioresource technology 2013 v.128 pp. 438-447
- ISSN:
- 0960-8524
- Subject:
- ammonia; anaerobic conditions; carbon; color; constructed wetlands; denitrification; fabrics; nitrogen; oxygen; pollutants; pollution load; sand; sugarcane bagasse; wastewater; wastewater treatment
- Abstract:
- ... This paper reports the pollutant removal efficiencies of two lab-scale hybrid wetland systems treating a textile wastewater. The two systems had identical configurations, each consisting of a vertical flow (VF) and a horizontal flow (HF) wetland that were filled with organic sugarcane bagasse and sylhet sand as the main media. The systems were operated under high hydraulic loading (HL) (566–5660mm ...
- DOI:
- 10.1016/j.biortech.2012.10.052
- PubMed:
- 23201526
-
https://dx.doi.org/10.1016/j.biortech.2012.10.052
- Author:
- Abubakar, Zubairu; Salema, Arshad Adam; Ani, Farid Nasir
- Source:
- Bioresource technology 2013 v.128 pp. 578-585
- ISSN:
- 0960-8524
- Subject:
- palm oils; activated carbon; temperature profiles; mixers; phenol; problem solving; methodology; biomass
- Abstract:
- ... A new technique to pyrolyse biomass in microwave (MW) system is presented in this paper to solve the problem of bio-oil deposition. Pyrolysis of oil palm shell (OPS) biomass was conducted in 800W and 2.45GHz frequency MW system using an activated carbon as a MW absorber. The temperature profile, product yield and the properties of the products were found to depend on the stirrer speed and MW absor ...
- DOI:
- 10.1016/j.biortech.2012.10.084
- PubMed:
- 23211483
-
https://dx.doi.org/10.1016/j.biortech.2012.10.084
- Author:
- Li, Xiaohu; Zhu, Nengwu; Wang, Yun; Li, Ping; Wu, Pingxiao; Wu, Jinhua
- Source:
- Bioresource technology 2013 v.128 pp. 454-460
- ISSN:
- 0960-8524
- Subject:
- air; ammonia; animals; catalysts; chemical oxygen demand; electrodes; fuels; meat carcasses; microbial fuel cells; nitrates; wastewater; wastewater treatment
- Abstract:
- ... Animal carcass wastewater (ACW) is a kind of typical high concentration organic wastewater. Up-flow tubular air cathode microbial fuel cells (MFCs) were constructed using 0, 4.0 and 8.0mg/cm2 MnO2 as cathodic catalyst, respectively (MFC-0, MFC-4 and MFC-8) to test the feasibility of bioelectricity production from ACW. After a start-up period of around 55d, when hydraulic retention time (HRT) was s ...
- DOI:
- 10.1016/j.biortech.2012.10.053
- PubMed:
- 23201528
-
https://dx.doi.org/10.1016/j.biortech.2012.10.053
- Author:
- Guo, Xiaoxiao; Zhang, Ruihua; Li, Zhe; Dai, Dazhang; Li, Chun; Zhou, Xiaohong
- Source:
- Bioresource technology 2013 v.128 pp. 547-552
- ISSN:
- 0960-8524
- Subject:
- Aspergillus terreus; Candida tropicalis; biomass; bioprocessing; corn cobs; genes; hydrolysis; saccharification; xylan; xylanases; xylitol; xylose
- Abstract:
- ... In this study, an integrated xylitol production pathway, directly using xylan as the substrate, was constructed in Candida tropicalis BIT-Xol-1 which could efficiently convert xylose into xylitol. In order to consolidate this bioprocessing, a β-1,4-xylanase gene (atn) and a β-xylosidase gene (atl) were cloned from Aspergillus terreus, and were constructed onto episomal plasmid pAUR123. Additionall ...
- DOI:
- 10.1016/j.biortech.2012.10.155
- PubMed:
- 23211479
-
https://dx.doi.org/10.1016/j.biortech.2012.10.155
- Author:
- Yue, Zheng-Bo; Li, Wen-Wei; Yu, Han-Qing
- Source:
- Bioresource technology 2013 v.128 pp. 738-744
- ISSN:
- 0960-8524
- Subject:
- anaerobic digestion; animals; biofuels; biomass; biotransformation; energy; methane; microbial communities; rumen; rumen development; rumen microorganisms; volatile fatty acids
- Abstract:
- ... Rumen in the mammalian animals is a natural cellulose-degrading system and the microorganisms inside have been found to be able to effectively digest lignocellulosic biomass. Furthermore, methane or volatile fatty acids, which could be further converted to other biofuels, are the two major products in such a system. This paper offers an overview of recent development in the application of rumen mi ...
- DOI:
- 10.1016/j.biortech.2012.11.073
- PubMed:
- 23265823
-
https://dx.doi.org/10.1016/j.biortech.2012.11.073
- Author:
- Samuel, Jastin; Pulimi, Mrudula; Paul, Madona L.; Maurya, Arun; Chandrasekaran, Natarajan; Mukherjee, Amitava
- Source:
- Bioresource technology 2013 v.128 pp. 423-430
- ISSN:
- 0960-8524
- Subject:
- Acinetobacter junii; Bacillus subtilis; Escherichia coli; X-radiation; adsorption; bacteria; desorption; energy; groundwater; pH; spectroscopy; wastewater
- Abstract:
- ... The adsorptive removal of Cr(VI) by alginate beads containing Cr(VI)-adapted Acinetobacter junii, Escherichia coli and Bacillus subtilis in batch and continuous packed bed column reactors was investigated. Under optimized conditions (pH 3.0; contact time, 180min; 30°C; initial Cr(VI) concentration of 100mg/L), 65.86mg/g adsorption capacity was recorded in the batch study. When an adsorbent dosage ...
- DOI:
- 10.1016/j.biortech.2012.10.116
- PubMed:
- 23201524
-
https://dx.doi.org/10.1016/j.biortech.2012.10.116
- Author:
- Degrenne, N.; Ledezma, P.; Bevilacqua, P.; Buret, F.; Allard, B.; Greenman, J.; Ieropoulos, I.A.
- Source:
- Bioresource technology 2013 v.128 pp. 769-773
- ISSN:
- 0960-8524
- Subject:
- electric current; hysteresis; microbial fuel cells
- Abstract:
- ... The electrical performance of microbial fuel cells in steady-state is usually investigated by standard characterisation methods that reveal many important parameters e.g. maximum power. This paper introduces a novel “bi-directional” method to study how the acquisition parameters (i.e. sweep rate and sweep regime) can influence measurements and consequently performance estimations. The investigatio ...
- DOI:
- 10.1016/j.biortech.2012.10.110
- PubMed:
- 23186662
-
https://dx.doi.org/10.1016/j.biortech.2012.10.110
- Author:
- He, Zhixing; Xiao, Hailong; Tang, Lu; Min, Hang; Lu, Zhenmei
- Source:
- Bioresource technology 2013 v.128 pp. 526-532
- ISSN:
- 0960-8524
- Subject:
- Achromobacter; Burkholderia; activated sludge; biodegradation; bioremediation; carbon; denaturing gradient gel electrophoresis; dimethyl phthalate; energy; gas chromatography; mass spectrometry; mineralization; pH; phenol; phthalic acid; sodium acetate; yeasts
- Abstract:
- ... HD-1, a stable microbial consortium capable of mineralizing di-n-butyl phthalate (DBP), was developed from activated sludge. The dominant microorganisms in the consortium, Gordonia sp., Burkholderia sp. and Achromobacter sp., were identified by denaturing gradient gel electrophoresis (DGGE). The consortium could mineralize approximately 90% of 1200mg/L DBP after 48h of cultivation. The optimal DBP ...
- DOI:
- 10.1016/j.biortech.2012.10.107
- PubMed:
- 23201908
-
https://dx.doi.org/10.1016/j.biortech.2012.10.107
- Author:
- Peng, Xingxing; Zhang, Zaili; Luo, Weishi; Jia, Xiaoshan
- Source:
- Bioresource technology 2013 v.128 pp. 173-179
- ISSN:
- 0960-8524
- Subject:
- Comamonas; anaerobic conditions; biodegradation; carbon; energy; inoculum; metabolites; nucleotide sequences; pH; ribosomal DNA; salts; sequence analysis; sludge; temperature
- Abstract:
- ... A bacterial strain able to rapidly degrade tetrabromobisphenol A (TBBPA), JXS-2-02, was isolated from anaerobic sludge that had been successfully enrichment by adding TBBPA for 240days. JXS-2-02 can use TBBPA as the sole carbon and energy source for growth in mineral salt medium. Based on morphology, biochemical characteristics and 16S rDNA sequence analysis, JXS-2-02 was identified as Comamonas s ...
- DOI:
- 10.1016/j.biortech.2012.10.051
- PubMed:
- 23201509
-
https://dx.doi.org/10.1016/j.biortech.2012.10.051
- Author:
- Tugtas, A. Evren; Cavdar, Pelin; Calli, Baris
- Source:
- Bioresource technology 2013 v.128 pp. 266-272
- ISSN:
- 0960-8524
- Subject:
- ammonia; effluents; electrodes; landfill leachates; microbial fuel cells; nitrification; nitrites; upflow anaerobic sludge blanket reactor
- Abstract:
- ... Bio-electrochemical treatment of anaerobically pre-treated landfill leachate was investigated in batch and continuous-flow two-chambered microbial fuel cells (MFCs). A high strength young landfill leachate was pre-treated using an upflow anaerobic sludge blanket reactor and the effluent resembling medium-aged landfill leachate was fed to the anode chamber of MFCs. The highest maximum current and p ...
- DOI:
- 10.1016/j.biortech.2012.10.035
- PubMed:
- 23196249
-
https://dx.doi.org/10.1016/j.biortech.2012.10.035
- Author:
- Nkemka, Valentine Nkongndem; Murto, Marika
- Source:
- Bioresource technology 2013 v.128 pp. 164-172
- ISSN:
- 0960-8524
- Subject:
- biogas; chemical oxygen demand; crop production; hydrolysates; macroalgae; methane; methane production; nutrients; steam; sugars; upflow anaerobic sludge blanket reactor; wheat straw
- Abstract:
- ... This research evaluated biogas production in batch and UASB reactors from pilot-scale acid catalysed steam pretreated and enzymatic hydrolysed wheat straw. The results showed that the pretreatment was efficient and, a sugar yield of 95% was obtained. The pretreatment improved the methane yield (0.28m3/kg VSadded) by 57% compared to untreated straw. Treatment of the straw hydrolysate with nutrient ...
- DOI:
- 10.1016/j.biortech.2012.10.117
- PubMed:
- 23196235
-
https://dx.doi.org/10.1016/j.biortech.2012.10.117
- Author:
- Zhu, Rulong; Wang, Shuying; Li, Jun; Wang, Kai; Miao, Lei; Ma, Bin; Peng, Yongzhen
- Source:
- Bioresource technology 2013 v.128 pp. 401-408
- ISSN:
- 0960-8524
- Subject:
- carbon; chemical oxygen demand; effluents; electrons; glycogen; landfill leachates; microorganisms; nitrogen; nitrogen content; polymers
- Abstract:
- ... A system which combined ASBR with pulsed SBR (PSBR) was introduced to enhance COD and nitrogen removal from the real landfill leachate. ASBR was used to degrade the organics from raw leachate mainly. Three equal feeds mode was applied in PSBR operation. The results obtained from the joint operation period (157days) show that the COD removal rate of ASBR was 83–88% under the specific loading rate o ...
- DOI:
- 10.1016/j.biortech.2012.10.063
- PubMed:
- 23201521
-
https://dx.doi.org/10.1016/j.biortech.2012.10.063
- Author:
- Cao, Guihua; Wang, Shuying; Peng, Yongzhen; Miao, Zhijia
- Source:
- Bioresource technology 2013 v.128 pp. 604-611
- ISSN:
- 0960-8524
- Subject:
- carbon; chemical oxygen demand; denitrification; nitrate reduction; nitrification; nitrogen; nitrogen content; phosphorus; sludge; wastewater
- Abstract:
- ... For weak municipal wastewater (COD⩽200mgL−1, NH4+-N⩽40mgL−1) with low influent C/N, a pilot modified four step-feed process was applied for simultaneous biological nitrogen (N) and phosphorus (P) removal under different inflow distribution ratios. It was designed with a short hydraulic retention time of 8.7h to raise influent load, and the optimal effluent performance of COD, NH4+-N, total nitroge ...
- DOI:
- 10.1016/j.biortech.2012.09.078
- PubMed:
- 23211487
-
https://dx.doi.org/10.1016/j.biortech.2012.09.078
- Author:
- Kim, Yeong-Su; Kim, Jung-Eun; Oh, Deok-Kun
- Source:
- Bioresource technology 2013 v.128 pp. 809-812
- ISSN:
- 0960-8524
- Subject:
- Caldicellulosiruptor saccharolyticus; borates; cellobiose; enzymes; lactose; lactulose
- Abstract:
- ... Cellobiose 2-epimerase from Caldicellulosiruptor saccharolyticus was used in the presence of borate to increase the production of lactulose from lactose. Maximum production of lactulose occurred using a 1:1M ratio of borate–lactose. Under this condition, the enzyme produced 614gl−1 lactulose from 700gl−1 lactose after incubation at pH 7.5 and 80°C for 3h, with a conversion yield of 88% and a produ ...
- DOI:
- 10.1016/j.biortech.2012.10.060
- PubMed:
- 23177735
-
https://dx.doi.org/10.1016/j.biortech.2012.10.060
- Author:
- Sajab, Mohd Shaiful; Chia, Chin Hua; Zakaria, Sarani; Khiew, Poi Sim
- Source:
- Bioresource technology 2013 v.128 pp. 571-577
- ISSN:
- 0960-8524
- Subject:
- adsorbents; adsorption; aqueous solutions; citric acid; desorption; fruits; methylene blue; pH; palm oils; phenol; temperature
- Abstract:
- ... Oil palm empty fruit bunch (EFB) fibers were employed to remove dyes from aqueous solutions via adsorption approaches. The EFB fibers were modified using citric acid (CA) and polyethylenimine (PEI) to produce anionic and cationic adsorbents, respectively. The CA modified EFB fibers (CA-EFB) and PEI-modified EFB fibers (PEI-EFB) were used to study the efficiency in removing cationic methylene blue ...
- DOI:
- 10.1016/j.biortech.2012.11.010
- PubMed:
- 23211482
-
https://dx.doi.org/10.1016/j.biortech.2012.11.010
- Author:
- Goldbeck, Rosana; Ramos, Mayla M.; Pereira, Gonçalo A.G.; Maugeri-Filho, Francisco
- Source:
- Bioresource technology 2013 v.128 pp. 797-803
- ISSN:
- 0960-8524
- Subject:
- fermentation; Acremonium strictum; enzyme activity; microorganisms; endo-1,4-beta-glucanase; sugarcane bagasse; ecosystems; biomass; beta-glucosidase; carboxymethylcellulose
- Abstract:
- ... The objective of the present study was to evaluate the production of cellulolytic enzymes by Acremonium strictum isolated from Brazilian Biome using different substrates. Fermentations were initially carried out using commercial substrates, including microcrystalline cellulose (AVICEL® and SERVACEL®) and carboxymethylcellulose (CMC). This was followed by fermentations performed using lignocellulos ...
- DOI:
- 10.1016/j.biortech.2012.10.034
- PubMed:
- 23186655
-
https://dx.doi.org/10.1016/j.biortech.2012.10.034
- Author:
- Gómez-Brandón, María; Lores, Marta; Domínguez, Jorge
- Source:
- Bioresource technology 2013 v.128 pp. 310-316
- ISSN:
- 0960-8524
- Subject:
- Eisenia fetida; bacteria; earthworms; electrical conductivity; fatty acids; fungi; microbial activity; pH; rabbits; vermicomposting; wastes
- Abstract:
- ... In the present study the potential of the earthworm Eisenia fetida to process large amounts of waste was evaluated through continuous feeding reactors in which new layers of rabbit manure were added sequentially to form an age gradient inside the reactors. An optimal moisture level, ranging from 66% to 76%, was maintained throughout the process using an automatic watering system. The pH was close ...
- DOI:
- 10.1016/j.biortech.2012.10.112
- PubMed:
- 23196253
-
https://dx.doi.org/10.1016/j.biortech.2012.10.112