19,725 results match your criteria Bioresource technology[Journal]


Mechanochemical esterification of waste mulberry wood by wet Ball-milling with tetrabutylammonium fluoride.

Bioresour Technol 2019 Apr 16;285:121354. Epub 2019 Apr 16.

Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, Key Lab of Biomass Energy and Material, Jiangsu Province, National Engineering Lab for Biomass Chemical Utilization, Key Lab on Forest Chemical Engineering, State Forestry Administration, Nanjing 210042, PR China. Electronic address:

Esterification of lignocellulosic biomass driven by dry ball-milling suffered from agglomeration of lignocellulosic matters during milling process. In this study, esterification of waste mulberry wood (MW) was carried out by wet ball-milling with water and tetrabutylammonium fluoride (TBAF) to prepare all-wood-plastic composites. Under the same condition, the esterification of MW by wet ball-milling with TBAF presented higher efficiency than that without TBAF which was attributed to catalytic function of F ions meanwhile the binding of TBA to cellulose fibrils hindered the compaction of fibrillated fragments. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.biortech.2019.121354DOI Listing

Comparison of Fenton and bismuth ferrite Fenton-like pretreatments of sugarcane bagasse to enhance enzymatic saccharification.

Bioresour Technol 2019 Apr 13;285:121343. Epub 2019 Apr 13.

Laboratory of Ecological and Environmental Engineering, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China; Collaborative Innovation Center for Sustainable Pig Production, Hubei Province, China.

This study compared enzymatic saccharification of sugarcane bagasse (SCB) after application of two different pretreatment methods, Fenton pretreatment (FP) and BiFeO Fenton-like pretreatment (BFP). The composition, morphology and structural properties of SCB with different pretreatments were analyzed. Results showed that, after BFP, the yield of reducing sugar of SCB under enzymatic saccharification for 72 h was 25. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.biortech.2019.121343DOI Listing

Food waste treatment with a leachate bed reactor: Effects of inoculum to substrate ratio and reactor design.

Bioresour Technol 2019 Apr 15;285:121350. Epub 2019 Apr 15.

Department of Civil and Environmental Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada. Electronic address:

This study evaluated the effects of different inoculum to substrate ratios (ISRs) (5, 10, 15%) on hydrolysis and acidogenesis of food waste in a conventional leachate bed reactor (LBR-C) and a novel fractionalized LBR (LBR-F). At ISR of 10%, LBR-C experienced clogging and thus the solid removal and VFA production reduced significantly. Without any clogging events at high ISR of 10%, LBR-F achieved significantly higher (p < 0. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.biortech.2019.121350DOI Listing

Coupling the post-extraction process to remove residual lignin and alter the recalcitrant structures for improving the enzymatic digestibility of acid-pretreated bamboo residues.

Bioresour Technol 2019 Apr 16;285:121355. Epub 2019 Apr 16.

Key Laboratory of Forestry Genetics & Biotechnology (Nanjing Forestry University), Ministry of Education, Nanjing 210037, China; Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China. Electronic address:

In this work, a mild and facile post-extraction using different reagents was evaluated to overcome these recalcitrance for improving the enzymatic digestibility of acid-pretreated bamboo residues by removing the lignin and disrupting its inhibitory properties. Results showed that the enzymatic digestibility of acid-pretreated bamboo residues can be improved from 15.4% to 61. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.biortech.2019.121355DOI Listing

Characteristics of tetracycline adsorption by cow manure biochar prepared at different pyrolysis temperatures.

Bioresour Technol 2019 Apr 15;285:121348. Epub 2019 Apr 15.

Laboratory of Biomass and Bioprocessing Engineering, College of Engineering, China Agricultural University, Box 191, Beijing 100083, China. Electronic address:

This study aimed to explore the feasibility of using cow manure biochar (CMBC) for adsorption of tetracycline for realizing farm waste treatment and recycling. Three kinds of pyrolysis-temperature CMBCs were prepared and characterized. There were significant differences in the specific surface area, pores structure, surface charge, and oxygen-containing functional groups. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.biortech.2019.121348DOI Listing

The properties and combustion behaviors of hydrochars derived from co-hydrothermal carbonization of sewage sludge and food waste.

Bioresour Technol 2019 Apr 13;285:121347. Epub 2019 Apr 13.

Guangdong Province Key Laboratory of Efficient and Clean Energy Utilization, School of Electric Power, South China University of Technology, Guangzhou 510640, China.

The experiments of co-hydrothermal carbonization (co-HTC) of sewage sludge and food waste in different mixing ratio (30%, 50% and 70%) and process temperature (180 °C, 230 °C and 280 °C) were conducted in this paper. And the hydrochars properties and thermal behaviors were investigated to determine the effects of the conditions. The results showed that the hydrochars derived from co-HTC possessed higher C content, higher HHV compared with the hydrochar of sewage sludge. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.biortech.2019.121347DOI Listing

Three-stage anaerobic co-digestion of food waste and waste activated sludge: Identifying bacterial and methanogenic archaeal communities and their correlations with performance parameters.

Bioresour Technol 2019 Apr 13;285:121333. Epub 2019 Apr 13.

School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, China.

A three-stage anaerobic digester setup was configured and evaluated for enhanced methane production during co-digestion of food waste and waste activated sludge and the corresponding bacterial and methanogen communities were characterized. Results showed that the average methane yield (0.496 L/gVS) in the three-stage digester was 13-52% higher than that of one- and two-stage digesters. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.biortech.2019.121333DOI Listing

New two-stage pretreatment for the fractionation of lignocellulosic components using hydrothermal pretreatment followed by imidazole delignification: Focus on the polysaccharide valorization.

Bioresour Technol 2019 Apr 13;285:121346. Epub 2019 Apr 13.

Universidade de Caxias do Sul, Laboratório de Enzimas e Biomassa, 95070-560 Caxias do Sul, RS, Brazil.

The combination of hydrothermal pretreatment followed by delignification with imidazole was evaluated for the first time as a potential selective two-stage fractionation for elephant grass, aiming at obtaining pure fractions susceptible to conversion to high value-added products. In addition, the recovery of cellulose and hemicelluloses and enzymatic hydrolysis yield of pretreated elephant grass were evaluated. Hydrothermal pretreatment at 180 °C under non-isothermal conditions allowed obtaining a liquor rich mainly in xylo- and glucooligosaccharides, as well as pentoses. Read More

View Article

Download full-text PDF

Source
https://linkinghub.elsevier.com/retrieve/pii/S09608524193056
Publisher Site
http://dx.doi.org/10.1016/j.biortech.2019.121346DOI Listing
April 2019
1 Read

Eco-electrogenic treatment of dyestuff wastewater using constructed wetland-microbial fuel cell system with an evaluation of electrode-enriched microbial community structures.

Bioresour Technol 2019 Apr 13;285:121349. Epub 2019 Apr 13.

P. D. Patel Institute of Applied Sciences, Charotar University of Science and Technology CHARUSAT Campus, Changa - 388421, Gujarat, India. Electronic address:

This work studied eco-electrogenic treatment of real dyestuff wastewater along with characterization of electrode-enriched microbial community structures in Fimbristylis dichotoma planted closed-circuit constructed wetland-microbial fuel cell (CW-MFC) system. The CW-MFC-2 (experimental system) achieved 82.2 ± 1. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.biortech.2019.121349DOI Listing

Torrefaction of pelletized corn residues with wet flue gas.

Bioresour Technol 2019 Apr 10;285:121330. Epub 2019 Apr 10.

Department of Chemical Engineering, University of South Carolina, Columbia, SC 29201, USA; South Carolina Center of Economic Excellence for Strategic Approaches to the Generation of Electricity, University of South Carolina, Columbia, SC 29201, USA. Electronic address:

Corn residue pellets were torrefied with wet flue gas, simulated by steam (0-21% v/v), CO (12% v/v), and O (4% v/v), balanced with N as reactive gas, in a fixed bed reactor at 260 °C of temperature and at 10-40 min of residence time. The distribution and yields of torrefied pellets, liquid, and gas products were examined. The microstructural changes of torrefied pellets were evaluated by Raman spectroscopy and scanning electron microscopy, while the components of gas products were analyzed by mass spectrometry. Read More

View Article

Download full-text PDF

Source
https://linkinghub.elsevier.com/retrieve/pii/S09608524193055
Publisher Site
http://dx.doi.org/10.1016/j.biortech.2019.121330DOI Listing
April 2019
1 Read

Catalytic co-pyrolysis of red cedar with methane to produce upgraded bio-oil.

Bioresour Technol 2019 Apr 9;285:121299. Epub 2019 Apr 9.

Department of Chemistry, Oklahoma State University, Stillwater, OK 74078, United States.

Fast pyrolysis is a promising route to transform biomass into bio-oil for further refining into transportation fuels and chemicals. However, bio-oil applications suffer from several challenges due to its adverse properties. This study reports improving bio-oil properties through co-pyrolysis of biomass with methane over molybdenum/zinc (MoZn/ZHSM-5) and HZSM-5 catalysts that promote deoxygenation, decarbonylation, hydrogen transfer and aromatization reactions. Read More

View Article

Download full-text PDF

Source
https://linkinghub.elsevier.com/retrieve/pii/S09608524193051
Publisher Site
http://dx.doi.org/10.1016/j.biortech.2019.03.138DOI Listing
April 2019
1 Read

Biological removal of HS gas in a semi-pilot scale biotrickling filter: Optimization of various parameters for efficient removal at high loading rates and low pH conditions.

Bioresour Technol 2019 Apr 8;285:121328. Epub 2019 Apr 8.

Department of Environmental Science and Engineering, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do 17104, Republic of Korea. Electronic address:

In this study, a semi-pilot scale biotrickling filter (BTF) was operated in a continuous co-current mode to remove high concentration of hydrogen sulfide (HS) at optimum operational conditions. The early startup period of 6 days was needed, and then stable removal of HS gas at inlet concentrations up to about 2000 ppm was successfully obtained at gas retention time (GRT) of 15 min and liquid recirculation rate (LRR) of 120 ml/min. The elimination capacities (ECs) increased linearly with increase in HS loading rates (HLRs up to 38. Read More

View Article

Download full-text PDF

Source
https://linkinghub.elsevier.com/retrieve/pii/S09608524193054
Publisher Site
http://dx.doi.org/10.1016/j.biortech.2019.121328DOI Listing
April 2019
1 Read

Sequential utilization of bamboo biomass through reductive catalytic fractionation of lignin.

Bioresour Technol 2019 Apr 11;285:121335. Epub 2019 Apr 11.

Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China. Electronic address:

Reductive catalytic fractionation (RCF) has emerged as a new biorefinery paradigm for the fractionation and sequential utilization of entire components of biomass. Herein, we investigated the RCF of bamboo, a highly abundant herbaceous feedstock, in the presence of Pd/C catalyst. The lignin fraction in bamboo was preferentially depolymerized into well-defined low-molecular-weight phenols, with leaving carbohydrates pulp as a solid residue. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.biortech.2019.121335DOI Listing

Effect of hydrothermal carbonization as pretreatment on energy recovery from food and paper wastes.

Bioresour Technol 2019 Apr 9;285:121329. Epub 2019 Apr 9.

Centre for Environmental Science and Engineering, IIT Bombay, Mumbai 400076, India. Electronic address:

In this study, food waste (FW) and paper wastes were subjected to hydrothermal carbonization (HTC) with a purpose to improve energy recovery potential. FW is suggested as the suitable feedstock for production of hydrochar (HC) having highest calorific value (29.6 MJ/kg). Read More

View Article

Download full-text PDF

Source
https://linkinghub.elsevier.com/retrieve/pii/S09608524193054
Publisher Site
http://dx.doi.org/10.1016/j.biortech.2019.121329DOI Listing
April 2019
1 Read

Significance of water level in affecting cathode potential in electro-wetland.

Bioresour Technol 2019 Apr 13:121345. Epub 2019 Apr 13.

UCD Dooge Centre for Water Resources Research, School of Civil Engineering, Newstead Building, University College Dublin, Belfield, Dublin 4, Ireland.

Bioelectricity production is always restricted by the limited cathode performance in integrated constructed wetland-microbial fuel cells (termed as electro-wetlands). Generally, the cathodes are located at the air-water interface for an oxygen-rich environment. However, its performance may still be unsatisfactory, resulting in a low bioelectricity production. Read More

View Article

Download full-text PDF

Source
https://linkinghub.elsevier.com/retrieve/pii/S09608524193056
Publisher Site
http://dx.doi.org/10.1016/j.biortech.2019.121345DOI Listing
April 2019
1 Read

Increasing DNA content for cost-effective oil production in Parachlorella kessleri.

Bioresour Technol 2019 Apr 11;285:121332. Epub 2019 Apr 11.

State Key Laboratory of Microbial Metabolism and School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China; Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University, Shanghai 200240, China; Biomass Energy Research Center, Shanghai Jiao Tong University, Shanghai 200240, China. Electronic address:

The aim of this work was to study salt stress effects on DNA content and oil production processes integrating harvesting, lipid accumulation and oil extraction. Salt-induced enlargement of Parachlorella kessleri cells, with increasing content of DNA and neutral lipid were found. The 34. Read More

View Article

Download full-text PDF

Source
https://linkinghub.elsevier.com/retrieve/pii/S09608524193055
Publisher Site
http://dx.doi.org/10.1016/j.biortech.2019.121332DOI Listing
April 2019
1 Read

Fluffy honeycomb-like activated carbon from popcorn with high surface area and well-developed porosity for ultra-high efficiency adsorption of organic dyes.

Bioresour Technol 2019 Apr 11;285:121340. Epub 2019 Apr 11.

State Key Laboratory of Organic-Inorganic Composites, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing 100029, China. Electronic address:

Fluffy honeycomb-like activated carbon with ultra-high surface area and well-developed hierarchical porous structure is simply prepared from popcorn by NaOH activation as adsorbent for dye removal. The popcorn has an unique fluffy structure, which originates from the corn via a rapid puffing process and is reserved during the following carbonization and NaOH activation. The ultra-high surface area and developed hierarchical porous structure make PDAC-4 show an outstanding adsorption capacity of 7765 mg·g for Rhodamine B (2500 mg·L), which is several times higher than those of the adsorbents ever reported. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.biortech.2019.121340DOI Listing
April 2019
1 Read

Exploring the potency of integrating semi-batch operation into lipid yield performance of Chlamydomonas sp. Tai-03.

Bioresour Technol 2019 Apr 11;285:121331. Epub 2019 Apr 11.

Department of Chemical Engineering, National Cheng Kung University, Tainan 701, Taiwan; Research Center for Circular Economy, National Cheng Kung University, Tainan 701, Taiwan; Research Center for Energy Technology and Strategy, National Cheng Kung University, Tainan 701, Taiwan; College of Engineering, Tunghai University, Taichung 407, Taiwan.

Third generation biofuels, also known as microalgal biofuels, are promising alternatives to fossil fuels. One attractive option is microalgal biodiesel as a replacement for diesel fuel. Chlamydomonas sp. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.biortech.2019.121331DOI Listing

A novel neutral and thermophilic endoxylanase from Streptomyces ipomoeae efficiently produced xylobiose from agricultural and forestry residues.

Bioresour Technol 2019 Mar 27;285:121293. Epub 2019 Mar 27.

College of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, Guangxi, PR China; Guangxi Key Laboratory of Biorefinery, Nanning 530003, Guangxi, PR China. Electronic address:

Endoxylanases capable of producing high ratios of xylobiose from agricultural and forestry residues in neutral and high temperature conditions are attractive for the prebiotic and alternative sweetener industries. In this study, a putative glycosyl hydrolase gene from Streptomyces ipomoeae was cloned and expressed in Escherichia coli. The recombinant enzyme, named as SipoEnXyn10A, hydrolyzed beechwood xylan in endo-action mode releasing xylobiose as its main end product. Read More

View Article

Download full-text PDF

Source
https://linkinghub.elsevier.com/retrieve/pii/S09608524193050
Publisher Site
http://dx.doi.org/10.1016/j.biortech.2019.03.132DOI Listing
March 2019
1 Read

Micro-aeration in anode chamber promotes p-nitrophenol degradation and electricity generation in microbial fuel cell.

Bioresour Technol 2019 Mar 27;285:121291. Epub 2019 Mar 27.

MOE, Key Laboratory of Cell Activities and Stress Adaptations, School of Life Science, Lanzhou University, Lanzhou 730000, Gansu, PR China; Key Laboratory for Resources Utilization Technology of Unconventional Water of Gansu Province, Gansu Academy of Membrane Science and Technology, Lanzhou 730020, Gansu, PR China. Electronic address:

Biodegradation of recalcitrant organic compounds in microbial fuel cell (MFC) is limited, due to its strong electron affinity and persisted in anaerobic condition. In this study, Pseudomonas monteilii LZU-3 degraded p-nitrophenol (PNP) and generated current at 100 mg L of PNP in anode MFC with the addition of oxygen. The highest PNP degradation was 4, 37. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.biortech.2019.03.130DOI Listing

Optimization of operating conditions of miniaturize single chambered microbial fuel cell using NiWO/graphene oxide modified anode for performance improvement and microbial communities dynamics.

Bioresour Technol 2019 Apr 11;285:121337. Epub 2019 Apr 11.

School of Biochemical Engineering, Indian Institute of Technology (BHU), Varanasi, U.P. 221005, India. Electronic address:

NiWO and graphene oxide (NWG) modified anodic carbon cloth (CC) is used to improve the performance of single chambered microbial fuel cell (SMFC) by statistical optimization of operational parameters. The properties of synthesized NWG nanocomposite on the surface of modified anode are characterized by FTIR, XRD, EDX, TEM and SEM analysis. The optimum level of operational parameters maximize the power density (PD) 1458 mW/m of SMFC having NWG modified anode and observed 8. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.biortech.2019.121337DOI Listing
April 2019
1 Read

Synergetic effect of combined ensiling of freshly harvested and excessively wilted maize stover for efficient biogas production.

Bioresour Technol 2019 Apr 11;285:121338. Epub 2019 Apr 11.

College of Engineering (Key Laboratory for Clean Renewable Energy Utilization Technology, Ministry of Agriculture), China Agricultural University, Beijing 100083, PR China; Yantai Institute, China Agricultural University, Yantai 264032, Shandong, PR China.

This study investigated the synergetic effects of ensiling freshly harvested maize stover (FHM) and excessively wilted maize stover (EWM) on biogas production. FHM and EWM were mixed in various proportions to obtain dry matter (DM) contents of 30%, 35% and 40%. For reference, FHM alone was ensiled and stored in open-air. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.biortech.2019.121338DOI Listing
April 2019
1 Read

Degradation pathways and kinetics of anthraquinone compounds along with nitrate removal by a newly isolated Rhodococcus pyridinivorans GF3 under aerobic conditions.

Bioresour Technol 2019 Apr 11;285:121336. Epub 2019 Apr 11.

State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.

A novel Rhodococcus pyridinivorans GF3 capable of degrading anthraquinone compounds (ACs) was isolated from 1-amino-4-bromoanthraquinone-2-sulfonic acid contaminated soil under aerobic conditions. Strain GF3 could degrade nine ACs at 150 rpm and 30 °C. LC-MS analysis showed that ACs were degraded via catechol and salicylic acid-produced pathways, which were different from previously reported phthalic acid-produced pathway. Read More

View Article

Download full-text PDF

Source
https://linkinghub.elsevier.com/retrieve/pii/S09608524193055
Publisher Site
http://dx.doi.org/10.1016/j.biortech.2019.121336DOI Listing
April 2019
1 Read

Immobilization of recombinant Escherichia coli whole cells harboring xylose reductase and glucose dehydrogenase for xylitol production from xylose mother liquor.

Bioresour Technol 2019 Apr 13;285:121344. Epub 2019 Apr 13.

Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, PR China; Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou 310014, PR China.

In this study, recombinant E. coli BL21(DE3)/pCDFDuet-1-XR-GDH harboring xylose reductase (XR) and glucose dehydrogenase (GDH) were immobilized and applied for the production of xylitol from xylose mother liquor (XML). Various immobilization methods were screened and the cross-linking approach with diatomite and polyetherimide as the raw materials and glutaraldehyde as the cross-linking agent was the optimal one, and the recovery activity reached of 80. Read More

View Article

Download full-text PDF

Source
https://linkinghub.elsevier.com/retrieve/pii/S09608524193056
Publisher Site
http://dx.doi.org/10.1016/j.biortech.2019.121344DOI Listing
April 2019
2 Reads

Biosynthesis and characterization of sophorolipid biosurfactant by Candida spp.: Application as food emulsifier and antibacterial agent.

Bioresour Technol 2019 Apr 2:121314. Epub 2019 Apr 2.

Environmental Biotechnology Division, Environmental Toxicology Group, CSIR-Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India. Electronic address:

Biosurfactants from the yeast strains Candida albicans SC5314 and Candida glabrata CBS138 were isolated and characterized. Surface tension of the cell-free broth was reduced from 72 N/m to 42 N/m and 55 N/m respectively. The biosurfactants showed emulsifying ability as the indices against castor oil were determined to be 51% and 53% for C. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.biortech.2019.121314DOI Listing
April 2019
1 Read

Torrefaction and carbonization of refuse derived fuel: Char characterization and evaluation of gaseous and liquid emissions.

Bioresour Technol 2019 Apr 6;285:121325. Epub 2019 Apr 6.

MEtRICs, Mechanical Engineering and Resource Sustainability Center, Department of Sciences and Technology of Biomass, Faculty of Sciences and Technology, NOVA University of Lisbon, 2829-516 Caparica, Portugal; VALORIZA, Research Center for Endogenous Resource Valorization, Polytechnic Institute of Portalegre, 7300-555 Portalegre, Portugal. Electronic address:

Refuse derived fuel containing non-hazardous industrial wastes was subjected to torrefaction and carbonization in an industrial furnace. The RDF samples were heated at 300 °C and 400 °C, for 30 min, yielding solid products (chars) as well as gases and liquids. Proximate and ultimate composition, mineral composition, chlorine content and high heating value were determined for the original sample and the produced chars. Read More

View Article

Download full-text PDF

Source
https://linkinghub.elsevier.com/retrieve/pii/S09608524193054
Publisher Site
http://dx.doi.org/10.1016/j.biortech.2019.121325DOI Listing
April 2019
2 Reads

Enhancing Haematococcus pluvialis biomass and γ-aminobutyric acid accumulation by two-step cultivation and salt supplementation.

Bioresour Technol 2019 Apr 11;285:121334. Epub 2019 Apr 11.

Faculty of Life Sciences and Technology, Kunming University of Science and Technology, Kunming, Yunnan, China. Electronic address:

The primary goal of this study was to assess the roles of chemical factors and bioprocess strategies on a mixotrophic culture of the microalga Haematococcus pluvialis during γ-aminobutyric acid (GABA) production. A two-stage strategy was used to increase the biomass and GABA accumulation of H. pluvialis. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.biortech.2019.121334DOI Listing

Physiological characterization and sequence analysis of a syringate-consuming Actinobacterium.

Bioresour Technol 2019 Apr 8;285:121327. Epub 2019 Apr 8.

Department of Chemical Engineering, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden. Electronic address:

Hardwood lignin is made of up to 75% syringyl-units and the bioconversion of syringate and syringaldehyde is therefore of considerable interest for biological valorization of lignin. In the current study, we have isolated a syringate-consuming bacterium identified as Microbacterium sp. RG1 and characterized its growth on several lignin model compounds. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.biortech.2019.121327DOI Listing
April 2019
2 Reads

Kinetics, thermodynamics, and physical characterization of corn stover (Zea mays) for solar biomass pyrolysis potential analysis.

Bioresour Technol 2019 Mar 15;284:466-473. Epub 2019 Mar 15.

Department of Chemical Engineering, University of Wyoming, Laramie, WY 82071, USA; Department of Petroleum Engineering, University of Wyoming, Laramie, WY 82071, USA; School of Energy Resources, University of Wyoming, Laramie, WY 82071, USA; School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA. Electronic address:

Solar pyrolysis of agricultural waste has huge potential for sustainable production of fuel and chemical feedstock. In this paper, the kinetics, thermodynamics, and physical characterization of corn stover (CS) collected from Wyoming, USA was conducted with respect to solar pyrolysis. The kinetics and thermodynamics of the CS pyrolysis was analyzed in detail using the methods described by KAS (Kissinger-Akahira-Sunose) and FWO (Flynn-Wall-Ozawa), from which the activation energy, Gibbs energy, Arrhenius pre-exponential factor, enthalpy, and entropy were derived. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.biortech.2019.03.049DOI Listing

Roles of bacterial community in the transformation of organic nitrogen toward enhanced bioavailability during composting with different wastes.

Bioresour Technol 2019 Apr 6;285:121326. Epub 2019 Apr 6.

College of Life Science, Northeast Agricultural University, Harbin 150030, China. Electronic address:

This study aimed to explore the roles of bacterial community in the transformation of bioavailable organic-N (BON) during different wastes composting. BON fractions with different forms and molecular weights were identified in this study. Results indicated that core bacterial communities improved the availability of BON by degrading high molecular weights BON into low molecular weights BON during different wastes composting. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.biortech.2019.121326DOI Listing

Enhanced short-chain fatty acids production from waste activated sludge by sophorolipid: Performance, mechanism, and implication.

Bioresour Technol 2019 Mar 25;284:456-465. Epub 2019 Mar 25.

School of Energy Science and Engineering, Central South University, Changsha 410083, PR China.

It was found in this study that the presence of sophorolipid (SL) enhanced the production of short-chain fatty acid (SCFA) from anaerobic fermentation of waste activated sludge (WAS). Experimental results showed that with an increase of SL addition from 0 to 0.1 g/g TSS, the maximal SCFA yield increased from 50. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.biortech.2019.03.121DOI Listing
March 2019
4.494 Impact Factor

Preparation and characteristics of bentonite-zeolite adsorbent and its application in swine wastewater.

Bioresour Technol 2019 Apr 3;284:448-455. Epub 2019 Apr 3.

State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang 330047, China. Electronic address:

The preparation of bentonite-zeolite (BZ) adsorbent using bentonite, aluminate, and rice husk was conducted. The adsorption experiment was performed for the removal of Cu and Zn from aqueous solution in single and binary systems. Results showed that gasification of rice husk could effectively improve the specific surface area and pore volume. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.biortech.2019.03.043DOI Listing
April 2019
2 Reads

Engineered biochar from agricultural waste for removal of tetracycline in water.

Bioresour Technol 2019 Mar 27;284:437-447. Epub 2019 Mar 27.

Department of Biological and Agricultural Engineering, Texas A&M AgriLife Research Center, Texas A&M University, 1229 North US Highway 281, Stephenville, TX 76401, USA; Department of Wildlife, Sustainability, and Ecosystem Sciences, Tarleton State University, 1333 W. Washington, Stephenville, TX 76401, USA. Electronic address:

For the first time the present study investigated the production, characterization and application of engineered biochar derived from alfalfa hays for removal of tetracycline (TC) in water. The NaOH activation of alfalfa-derived raw biochar (BC) made significant increase in surface area (796.50 m/g) and pore volume (0. Read More

View Article

Download full-text PDF

Source
https://linkinghub.elsevier.com/retrieve/pii/S09608524193050
Publisher Site
http://dx.doi.org/10.1016/j.biortech.2019.03.131DOI Listing
March 2019
4 Reads

Optimization of light intensity and photoperiod for Isochrysis galbana culture to improve the biomass and lipid production using 14-L photobioreactors with mixed light emitting diodes (LEDs) wavelength under two-phase culture system.

Bioresour Technol 2019 Apr 6;285:121323. Epub 2019 Apr 6.

Department of Biotechnology, Pukyong National University, Busan 48513, Republic of Korea. Electronic address:

The optimal light intensity and photoperiod required to produce high biomass and lipid contents in Isochrysis galbana cultured in a 14-L bioreactor with LED wavelengths was studied. The cell biomass production was monitored in the first phase comprising of mixed blue (465 nm) and red (640 nm) LED wavelengths, then green (520 nm) LED were used in the second phase for lipid production. The optimal light intensity was 400 µmol/m/s giving a maximum cell biomass of 1. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.biortech.2019.121323DOI Listing
April 2019
1 Read

Ultrasound and surfactant assisted ionic liquid pretreatment of sugarcane bagasse for enhancing saccharification using enzymes from an ionic liquid tolerant Aspergillus assiutensis VS34.

Bioresour Technol 2019 Apr 4;285:121319. Epub 2019 Apr 4.

School of Biotechnology, University of Jammu, Jammu 180006, India. Electronic address:

Ionic liquid (IL) pretreatment represents an effective strategy for effective fractionation of lignocellulosic biomass (LB) to fermentable sugars in a biorefinery. Optimization of combinatorial pretreatment of sugarcane bagasse (SCB) with IL (1-butyl-3-methylimidazolium chloride [Bmim]Cl) and surfactant (PEG-8000) resulted in enhanced sugar yield (16.5%) upon enzymatic saccharification. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.biortech.2019.121319DOI Listing
April 2019
1 Read

Thermogravimetric and kinetic studies of metal (Ru/Fe) impregnated banana pseudo-stem (Musa acuminate).

Bioresour Technol 2019 Apr 4;285:121318. Epub 2019 Apr 4.

Department of Chemical Engineering, Indian Institute of Technology Roorkee, Uttarakhand, India. Electronic address:

Pyrolysis/gasification have proved to be promising conversion techniques to convert biomass into fuels. The current research work focuses on impregnation of Ru and Fe into banana pseudo-stem to study kinetics, pyrolytic behaviour and their impact during pyrolysis through thermogravimetric analyser (TGA). Samples weight loss were analyzed by TGA at four different heating rates (5-20 °C min) over the temperature range of 30-900 °C. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.biortech.2019.121318DOI Listing

Shifts in fermentation end products and bacterial community composition in long-term, sequentially transferred in vitro ruminal enrichment cultures fed switchgrass with and without ethanol as a co-substrate.

Bioresour Technol 2019 Apr 6;285:121324. Epub 2019 Apr 6.

United States Department of Agriculture, Agricultural Research Service, US Dairy Forage Research Center, Madison, WI 53706, USA; Department of Bacteriology, University of Wisconsin-Madison, Madison, WI 53706, USA. Electronic address:

In vitro ruminal fermentations resemble in vivo fermentations with respect to substrate consumption and distribution of fermentation products in short term (1-5 d) incubations. However, little is known regarding changes in in vitro fermentations over prolonged incubation or multiple transfers. Gas production, pH, fermentation products, and bacterial community composition were examined in duplicate in vitro fermentations of switchgrass plus distillers grains that were transferred at 3-4 d intervals over 900 d. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.biortech.2019.121324DOI Listing

Performance of a biofilter with compost and activated carbon based packing material for gas-phase toluene removal under extremely high loading rates.

Bioresour Technol 2019 Apr 3:121317. Epub 2019 Apr 3.

Department of Chemical Engineering and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, Uttar Pradesh, India.

The main aim of this work was to evaluate the performance of a biofilter packed with a mixture of compost and activated carbon, for gas-phase toluene removal under very high loading rates. Plaster of Paris was used as a binder to improve the mechanical strength and durability of the packing media. The biofilter was operated continuously for a period of ∼110 days and at four different flow rates (0. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.biortech.2019.121317DOI Listing

Pilot-scale biomethanation of cattle manure using dense membranes.

Bioresour Technol 2019 Apr 4;284:430-436. Epub 2019 Apr 4.

CNRS, Laboratoire Réactions et Génie des Procédés, UMR 7274, 2 avenue de la forêt de Haye, TSA 40602, Vandœuvre-lès-Nancy F-54518, France; Université de Lorraine, LRGP, UMR 7274, 2 avenue de la forêt de Haye, TSA 40602, Vandœuvre-lès-Nancy F-54518, France.

This study aimed at studying the biomethanation process using a 100 L pilot-scale digester equipped with a dense membrane for hydrogen injection. Hydrogen mass transfer was characterized and the impact of hydrogen flowrate, agitation rate and of the co-injection of CO, on biogas production and composition, was precisely studied. A linear relationship between H flowrate and the CO and CH rates in biogas was found but no impact on biogas flowrate was shown. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.biortech.2019.03.140DOI Listing

Microalgae-biorefinery with cascading resource recovery design associated to dairy wastewater treatment.

Bioresour Technol 2019 Mar 21;284:424-429. Epub 2019 Mar 21.

Bioengineering and Environmental Sciences Lab, CEEFF, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India; Academy of Scientific and Innovative Research (AcSIR), Hyderabad, India; Department of Environmental Science and Engineering, Kyung Hee University, Seocheon-dong, Yongin-si, Gyeonggi-do 446-701, Republic of Korea. Electronic address:

The potential of microalgae for the treatment of dairy wastewater (DWW) was studied by integrating with bioethanol production. At the end of treatment, organic carbon removal was observed to be 90% with simultaneous removal of nutrients. Biomass concentration increased from 3 day and reached to a maximum of 1. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.biortech.2019.03.106DOI Listing

Enhanced production of 3-hydroxypropionic acid from glucose and xylose by alleviation of metabolic congestion due to glycerol flux in engineered Escherichia coli.

Bioresour Technol 2019 Apr 5;285:121320. Epub 2019 Apr 5.

Department of Agricultural Biotechnology and Center for Food and Bioconvergence, Seoul National University, Seoul 08826, Republic of Korea; Interdisciplinary Program of Bioengineering, Seoul National University, Seoul 08826, Republic of Korea. Electronic address:

Among platform chemicals obtained from renewable biomass, 3-hydroxypropionic acid (3-HP) has attracted considerable attention. A GC/TOF-MS study revealed that the intracellular metabolites of the TCA cycle and fatty acid synthesis increased in JHS01302, a galP-overexpressing strain of Escherichia coli, during glucose and xylose co-fermentation. Decreased intracellular glycerol levels and increased intracellular biosynthesis of 3-HP were also detected in the strain. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.biortech.2019.121320DOI Listing

Integrating anaerobic co-digestion of dairy manure and food waste with cultivation of edible mushrooms for nutrient recovery.

Bioresour Technol 2019 Apr 1;285:121312. Epub 2019 Apr 1.

Rubenstein School of Environment and Natural Resources, University of Vermont, Burlington, VT 05405, USA; Gund Institute for Environment, University of Vermont, Burlington, VT 05405, USA. Electronic address:

State-level policies in the New England region of the United States require diversion of organic materials away from landfills. One management option for food waste is anaerobic co-digestion with dairy manure. In addition to biogas, anaerobic digestion produces separated solid and liquid digestates. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.biortech.2019.121312DOI Listing
April 2019
1 Read

Efficient approaches to convert Coniochaeta hoffmannii lipids into biodiesel by in-situ transesterification.

Bioresour Technol 2019 Apr 4;285:121321. Epub 2019 Apr 4.

Department of Biology, Faculty of Science, Ankara University, 06100 Beşevler, Ankara, Turkey.

Coniochaeta hoffmannii was isolated from soils contaminated with biscuit factory wastes showed the maximum lipid accumulation capacity in the study. Lipid production was optimized in terms of pH, carrot pomace loading, nitrogen type and amount, incubation time. Solvent, alcohol type and catalyst concentration, dried/wet biomass concentration, reaction approaches and time were optimized for lipid extraction and transesterification. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.biortech.2019.121321DOI Listing
April 2019
1 Read

Improving the enzymatic hydrolysis of larch by coupling water pre-extraction with alkaline hydrogen peroxide post-treatment and adding enzyme cocktail.

Bioresour Technol 2019 Apr 4;285:121322. Epub 2019 Apr 4.

Key Laboratory of Forestry Genetics & Biotechnology (Nanjing Forestry University), Ministry of Education, Nanjing 210037, People's Republic of China; Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, People's Republic of China; Jiangsu Province Key Laboratory of Green Biomass-based Fuels and Chemicals, Nanjing 210037, People's Republic of China. Electronic address:

Soluble arabinogalactan (AG) in larch leads to reagent waste during its biorefining using oxidative pretreatment strategies. A two-stage pretreatment of water pre-extraction followed by alkaline hydrogen peroxide (AHP) pretreatment was investigated to more efficiently convert larch cellulose into glucose, while also obtaining a value-added AG product stream. The results showed that water pre-extraction increases the lignin selectivity of both NaOH and HO reagents, translating to improved lignin removal and enzymatic hydrolysis yields. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.biortech.2019.121322DOI Listing

Dynamic changes in fermentation profiles and bacterial community composition during sugarcane top silage fermentation: A preliminary study.

Bioresour Technol 2019 Apr 2;285:121315. Epub 2019 Apr 2.

College of Animal Science and Technology, Guangxi University, Nanning, Guangxi 530004, China. Electronic address:

Investigating the dynamic changes in bacterial community composition during sugarcane top silage production starting in late March and finishing in late June (storage temperature: 20 to 35 °C) will advance our understanding of ensilage in hot ambient temperatures. The results showed that, the fermentation process was dominated by Leuconostocaceae (until d 5), followed by Lactobacillaceae (from d 5 to d 30), and finally Lactobacillaceae and Clostridium (from d 60 to d 90). As the fermentation process progressed, there was a significant increase in Lactobacillaceae abundance, and on d 60 there was a sharp increase in Clostridiaceae abundance. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.biortech.2019.121315DOI Listing

Metabolic engineering of Clostridium carboxidivorans for enhanced ethanol and butanol production from syngas and glucose.

Bioresour Technol 2019 Mar 30;284:415-423. Epub 2019 Mar 30.

William G. Lowrie Department of Chemical & Biomolecular Engineering, The Ohio State University, 151 West Woodruff Ave, Columbus, OH 43210, USA. Electronic address:

Clostridium carboxidivorans can convert CO, CO and H to ethanol and n-butanol; however, its industrial application is limited by the lack of tools for metabolic pathway engineering. In this study, C. carboxidivorans was successfully engineered to overexpress aor, adhE2, and fnr together with adhE2 or aor. Read More

View Article

Download full-text PDF

Source
https://linkinghub.elsevier.com/retrieve/pii/S09608524193051
Publisher Site
http://dx.doi.org/10.1016/j.biortech.2019.03.145DOI Listing
March 2019
1 Read

Catalytic co-pyrolysis of sugarcane bagasse and waste high-density polyethylene over faujasite-type zeolite.

Bioresour Technol 2019 Mar 28;284:406-414. Epub 2019 Mar 28.

School of Chemical Engineering, Engineering Campus, Universiti Sains Malaysia, 14300 Nibong Tebal, Penang, Malaysia. Electronic address:

This study investigated the catalytic co-pyrolysis of sugarcane bagasse (SCB) and waste high-density polyethylene (HDPE) over faujasite-type zeolite derived from electric arc furnace slag (FAU-EAFS) in a fixed-bed reactor. The effects of reaction temperature, catalyst-to-feedstock ratio, and HDPE-to-SCB ratio on product fractional yields and chemical compositions were discussed. The co-pyrolysis of SCB and HDPE over FAU-EAFS increased the liquid yield and enhanced the quality of bio-oil. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.biortech.2019.03.137DOI Listing

Co-pyrolysis of phumdi and para grass biomass from Loktak Lake.

Bioresour Technol 2019 Apr 1;285:121308. Epub 2019 Apr 1.

Biomass Conversion Area (BCA), Materials Resource Efficiency Division (MRED), CSIR-Indian Institute of Petroleum (IIP), Dehradun 248005, India; Academy of Scientific and Innovative Research (AcSIR), CSIR, India. Electronic address:

In the present work, the pyrolysis of para grass (PG) and phumdi (PH) biomass samples was conducted in the temperature range of 300-500 °C to obtain the optimum temperature for obtaining the maximum yield of bio-oil. Further, co-pyrolysis experiments of PH and PG were also conducted at the same optimized temperature and varied compositions to investigate the synergistic effect. It was observed during the co-pyrolysis, that the maximum bio-oil yield of 37. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.biortech.2019.03.147DOI Listing
April 2019
2 Reads

n-Butanol and ethanol production from cellulose by Clostridium cellulovorans overexpressing heterologous aldehyde/alcohol dehydrogenases.

Bioresour Technol 2019 Apr 3;285:121316. Epub 2019 Apr 3.

William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, 151 W. Woodruff Avenue, Columbus, OH 43210, USA. Electronic address:

With high cellulolytic and acetic/butyric acids production abilities, Clostridium cellulovorans is promising for use to produce cellulosic n-butanol. Here, we introduced three different aldehyde/alcohol dehydrogenases encoded by bdhB, adhE1, and adhE2 from Clostridium acetobutylicum into C. cellulovorans and studied their effects on ethanol and n-butanol production. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.biortech.2019.121316DOI Listing
April 2019
2 Reads

Electrons transfer determined greenhouse gas emissions in enhanced nitrogen-removal constructed wetlands with different carbon sources and carbon-to-nitrogen ratios.

Bioresour Technol 2019 Apr 1;285:121313. Epub 2019 Apr 1.

School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China.

A constructed wetland (CW) was established to explore the influence of carbon addition (glucose or sodium acetate) on nitrogen removal and greenhouse gas (GHG) emissions at chemical oxygen demand to nitrogen ratios (COD/Ns) of 0, 4, 7. Results showed that the type of carbon source and COD/N significantly influenced the CW performance, in which the electrons transfer determined the regulation of denitrification, methanogenesis and respiration. Higher NO emissions were consistent with higher nitrite accumulation at low COD/N because of electrons competition. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.biortech.2019.121313DOI Listing
April 2019
1 Read