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You searched for: Journal name Bioresource technology Remove constraint Journal name: Bioresource technology Publication year rev 7985-2015 Remove constraint Publication year rev: 7985-2015 Source 2015 v.175 Remove constraint Source: 2015 v.175
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1. Anaerobic mesophilic co-digestion of ensiled sorghum, cheese whey and liquid cow manure in a two-stage CSTR system: Effect of hydraulic retention time

Author:
Margarita Andreas Dareioti; Michael Kornaros
Source:
Bioresource technology 2015 v.175 pp. 553-562
ISSN:
0960-8524
Subject:
anaerobic digestion; carbohydrates; cattle manure; cheese whey; grain sorghum; hydrogen; methane production; methanogens; silage
Abstract:
... The aim of this study was to investigate the effect of hydraulic retention time (HRT) on hydrogen and methane production using a two-stage anaerobic process. Two continuously stirred tank reactors (CSTRs) were used under mesophilic conditions (37°C) in order to enhance acidogenesis and methanogenesis. A mixture of pretreated ensiled sorghum, cheese whey and liquid cow manure (55:40:5, v/v/v) was u ...
DOI:
10.1016/j.biortech.2014.10.102

2. Assessment of integrated process based on hydrothermal and alkaline treatments for enzymatic saccharification of sweet sorghum stems

Author:
Shao-Long Sun; Shao-Ni Sun; Jia-Long Wen; Xue-Ming Zhang; Feng Peng; Run-Cang Sun
Source:
Bioresource technology 2015 v.175 pp. 473-479
ISSN:
0960-8524
Subject:
alkali treatment; cellulose; enzymatic treatment; glucose; hemicellulose; lignin; lignocellulose; raw materials; saccharification; sodium hydroxide; stems; sweet sorghum; temperature
Abstract:
... In this study, sweet sorghum stem was subjected to hydrothermal pretreatment (HTP) and alkaline post-treatment to enhance its saccharification ratio by reducing its recalcitrance. The results showed that the HTP (110–210°C, 0.5–2.0h) significantly degraded hemicelluloses, and the pretreatment at the temperature higher than 190°C led to the partial degradation of the cellulose. As compared to the s ...
DOI:
10.1016/j.biortech.2014.10.111

3. Biochar supported nanoscale zerovalent iron composite used as persulfate activator for removing trichloroethylene

Author:
Jingchun Yan; Lu Han; Weiguo Gao; Song Xue; Mengfang Chen
Source:
Bioresource technology 2015 v.175 pp. 269-274
ISSN:
0960-8524
Subject:
aqueous solutions; biochar; data analysis; electron transfer; iron; oxygen; surface area; trichloroethylene
Abstract:
... Biochar (BC) supported nanoscale zerovalent iron (nZVI) composite was synthesized and used as an activator for persulfate to enhance the trichloroethylene (TCE) removal in aqueous solutions. The degradation efficiency of TCE (0.15mmolL−1) was 99.4% in the presence of nZVI/BC (4.5mmolL−1, nZVI to BC mass ratio was 1:5) and persulfate (4.5mmolL−1) within 5min, which was significantly higher than tha ...
DOI:
10.1016/j.biortech.2014.10.103

4. Biohydrogen production from a novel alkalophilic isolate Clostridium sp. IODB-O3

Author:
Anil Kumar Patel; Arundhati Debroy; Sandeep Sharma; Reetu Saini; Anshu Mathur; Ravi Gupta; Deepak Kumar Tuli
Source:
Bioresource technology 2015 v.175 pp. 291-297
ISSN:
0960-8524
Subject:
Clostridium; bacteria; bioethanol; biomass; ethanol production; genes; hydrogen; hydrogen production; pH; ribosomal DNA; sludge; sugars; wheat straw
Abstract:
... Hydrogen producing bacteria IODB-O3 was isolated from sludge and identified as Clostridium sp. by 16S rDNA gene analysis. In this study, biohydrogen production process was developed using low-cost agro-waste. Maximum H2 was produced at 37°C and pH 8.5. Maximum H2 yield was obtained 2.54±0.2mol-H2/mol-reducing sugar from wheat straw pre-hydrolysate (WSPH) and 2.61±0.1mol-H2/mol-reducing sugar from ...
DOI:
10.1016/j.biortech.2014.10.110

5. Co-gasification of biosolids with biomass: Thermogravimetric analysis and pilot scale study in a bubbling fluidized bed reactor

Author:
Ming Ming Yu; Mohammad S. Masnadi; John R. Grace; Xiaotao T. Bi; C. Jim Lim; Yonghua Li
Source:
Bioresource technology 2015 v.175 pp. 51-58
ISSN:
0960-8524
Subject:
Panicum virgatum; alkaline earth metals; ammonia; biomass; biosolids; catalysts; clay minerals; energy recovery; feedstocks; fluidized beds; fuels; gasification; potassium; synthesis gas; thermogravimetry
Abstract:
... This work studied the feasibility of co-gasification of biosolids with biomass as a means of disposal with energy recovery. The kinetics study at 800°C showed that biomass, such as switchgrass, could catalyze the reactions because switchgrass ash contained a high proportion of potassium, an excellent catalyst for gasification. However, biosolids could also inhibit gasification due to interaction b ...
DOI:
10.1016/j.biortech.2014.10.045

6. Comparative study on pyrolysis of lignocellulosic and algal biomass using a thermogravimetric and a fixed-bed reactor

Author:
Ting Yuan; Arash Tahmasebi; Jianglong Yu
Source:
Bioresource technology 2015 v.175 pp. 333-341
ISSN:
0960-8524
Subject:
Chlorella vulgaris; Fourier transform infrared spectroscopy; activation energy; algae; biofuels; biomass; bioreactors; carbon dioxide; hydrogen; lignocellulose; methane; nitrogen content; phenol; pyrolysis; temperature; thermogravimetry
Abstract:
... Pyrolysis characteristics of four algal and lignocellulosic biomass samples were studied by using a thermogravimetric analyzer (TGA) and a fixed-bed reactor. The effects of pyrolysis temperature and biomass type on the yield and composition of pyrolysis products were investigated. The average activation energy for pyrolysis of biomass samples by FWO and KAS methods in this study were in the range ...
DOI:
10.1016/j.biortech.2014.10.108

7. Comparison of aqueous ammonia and dilute acid pretreatment of bamboo fractions: Structure properties and enzymatic hydrolysis

Author:
Donglin Xin; Zhong Yang; Feng Liu; Xueru Xu; Junhua Zhang
Source:
Bioresource technology 2015 v.175 pp. 529-536
ISSN:
0960-8524
Subject:
ammonia; bamboos; cellulose; chemical composition; crystal structure; endo-1,4-beta-glucanase; enzymatic hydrolysis; hydrolysis; sugars; xylanases
Abstract:
... The effect of two pretreatments methods, aqueous ammonia (SAA) and dilute acid (DA), on the chemical compositions, cellulose crystallinity, morphologic change, and enzymatic hydrolysis of bamboo fractions (bamboo yellow, timber, green, and knot) was compared. Bamboo fractions with SAA pretreatment had better hydrolysability than those with DA pretreatment. High crystallinity index resulted in low ...
DOI:
10.1016/j.biortech.2014.10.160

8. Control of nitrogen behaviour by phosphate concentration during microalgal-bacterial cultivation using digestate

Author:
Cyril Marcilhac; Bruno Sialve; Anne-Marie Pourcher; Christine Ziebal; Nicolas Bernet; Fabrice Béline
Source:
Bioresource technology 2015 v.175 pp. 224-230
ISSN:
0960-8524
Subject:
Chlorella; Scenedesmus; anaerobic digestion; biomass; microalgae; mineralization; nitrification; nitrogen; nutrients; phosphates; phosphorus
Abstract:
... The cultivation of microalgae with digestate supernatant is a promising process for the recovery of mineralized nutrients (P, N) from anaerobic digestion. Nevertheless, the variability of phosphorus concentration in the influent could limit this process. The impact of initial N:P ratios between 3 and 76gNgP−1 was studied and proved no growth limitation over 14-day batch experiments even when P was ...
DOI:
10.1016/j.biortech.2014.10.022

9. Economics evaluation for on-site pyrolysis of kraft lignin to value-added chemicals

Author:
Sherif Farag; Jamal Chaouki
Source:
Bioresource technology 2015 v.175 pp. 254-261
ISSN:
0960-8524
Subject:
cost estimates; economic investment; feedstocks; lignin; oils; operating costs; prices; pyrolysis; value added
Abstract:
... This work is part of a series of investigations on pyrolysis of lignin. After obtaining the necessary information regarding the quantity and quality of the obtained products, a first step economics evaluation for converting lignin into chemicals was essential. To accomplish this aim, a pyrolysis plant with a 50t/d capacity was designed, and the total capital investment and operating costs were est ...
DOI:
10.1016/j.biortech.2014.10.096

10. Effect of intracellular P content on phosphate removal in Scenedesmus sp. Experimental study and kinetic expression

Author:
A. Ruiz-Martínez; J. Serralta; I. Romero; A. Seco; J. Ferrer
Source:
Bioresource technology 2015 v.175 pp. 325-332
ISSN:
0960-8524
Subject:
Scenedesmus; biomass; equations; microalgae; mixed culture; phosphates; phosphorus
Abstract:
... The present work determines the effect of phosphorus content on phosphate uptake rate in a mixed culture of Chlorophyceae in which the genus Scenedesmus dominates. Phosphate uptake rate was determined in eighteen laboratory batch experiments, with samples taken from a progressively more P-starved culture in which a minimum P content of 0.11% (w/w) was achieved. The results obtained showed that the ...
DOI:
10.1016/j.biortech.2014.10.081

11. Effect of trace hydrazine addition on the functional bacterial community of a sequencing batch reactor performing completely autotrophic nitrogen removal over nitrite

Author:
Pengying Xiao; Peili Lu; Daijun Zhang; Xinkuan Han; Qingxiang Yang
Source:
Bioresource technology 2015 v.175 pp. 216-223
ISSN:
0960-8524
Subject:
Nitrosococcus; Nitrosomonas; bacteria; bacterial communities; granules; hydrazine; long term effects; nitrites; nitrogen; sludge
Abstract:
... A sequencing batch reactor (SBR) was conducted to perform completely autotrophic nitrogen removal over nitrite (CANON). The effect of long-term trace N2H4 addition on ammonium oxidizing bacteria (AOB) and anaerobic AOB (AnAOB) in the CANON system was investigated. AOB and AnAOB primarily related to Nitrosococcus, Nitrosomonas and Candidatus scalindua, respectively. Before and after trace N2H4 addi ...
DOI:
10.1016/j.biortech.2014.10.084

12. Effects of carbon dioxide on cell growth and propionic acid production from glycerol and glucose by Propionibacterium acidipropionici

Author:
An Zhang; Jianxin Sun; Zhongqiang Wang; Shang-Tian Yang; Haiying Zhou
Source:
Bioresource technology 2015 v.175 pp. 374-381
ISSN:
0960-8524
Subject:
Propionibacterium acidipropionici; carbon; carbon dioxide; cell growth; fermentation; glucose; glycerol; models; propionic acid; pyruvate carboxylase; succinic acid
Abstract:
... The effects of CO2 on propionic acid production and cell growth in glycerol or glucose fermentation were investigated in this study. In glycerol fermentation, the volumetric productivity of propionic acid with CO2 supplementation reached 2.94g/L/day, compared to 1.56g/L/day without CO2. The cell growth using glycerol was also significantly enhanced with CO2. In addition, the yield and productivity ...
DOI:
10.1016/j.biortech.2014.10.046

13. Effects of different pre-extractions combining with chemi-thermomechanical treatments on the enzymatic hydrolysis of wheat straw

Author:
Jinping Zhang; Wei Liu; Qingxi Hou; Junwei Chen; Ningpan Xu; Fuzeng Ji
Source:
Bioresource technology 2015 v.175 pp. 75-81
ISSN:
0960-8524
Subject:
acetic acid; cellulose; crystal structure; enzymatic hydrolysis; enzymatic treatment; enzymes; glucose; sodium hydroxide; sulfuric acid; synergism; wheat straw
Abstract:
... Three different pre-extraction methods (i.e., acetic acid, sulfuric acid and sodium hydroxide) were used for the pretreatment followed by chemi-thermomechanical treatments and then enzymatic hydrolysis of wheat straw to produce fermentable sugars. The performance of enzymatic hydrolysis by the synergistic effect of pre-extractions and chemi-thermomechanical treatments was remarkable. Results showe ...
DOI:
10.1016/j.biortech.2014.10.033

14. Effects of furan derivatives on biohydrogen fermentation from wet steam-exploded cornstalk and its microbial community

Author:
Zhidan Liu; Chong Zhang; Linjun Wang; Jianwei He; Baoming Li; Yuanhui Zhang; Xin-Hui Xing
Source:
Bioresource technology 2015 v.175 pp. 152-159
ISSN:
0960-8524
Subject:
Clostridium; biofuels; biohydrogen; biomass; corn stover; feedstocks; fermentation; fuel production; furfural; hydrogen production; hydroxymethylfurfural; lignocellulose; microbial communities; sludge
Abstract:
... Understanding the role of furan derivatives, furfural (FUR) and 5-hydroxymethyl furfural (HMF), is important for biofuel production from lignocellulosic biomass. In this study, the effects of furan derivatives on hydrogen fermentation from wet steam-exploded cornstalk were investigated. The control experiments with only seed sludge indicated that HMF addition of up to 1g/L stimulated hydrogen prod ...
DOI:
10.1016/j.biortech.2014.10.067

15. Enhancing microalgal biomass productivity by engineering a microalgal–bacterial community

Author:
Dae-Hyun Cho; Rishiram Ramanan; Jina Heo; Jimin Lee; Byung-Hyuk Kim; Hee-Mock Oh; Hee-Sik Kim
Source:
Bioresource technology 2015 v.175 pp. 578-585
ISSN:
0960-8524
Subject:
Chlorella vulgaris; bacteria; biomass production; biotechnology; carbon; carbon cycle; coculture; engineering; flocculation; lipid content; lipids; metabolism; microalgae; molecular weight; symbiosis
Abstract:
... This study demonstrates that ecologically engineered bacterial consortium could enhance microalgal biomass and lipid productivities through carbon exchange. Phycosphere bacterial diversity analysis in xenic Chlorella vulgaris (XCV) confirmed the presence of growth enhancing and inhibiting microorganisms. Co-cultivation of axenic C. vulgaris (ACV) with four different growth enhancing bacteria revea ...
DOI:
10.1016/j.biortech.2014.10.159

16. Enzymatic hydrolysis of steam-exploded sugarcane bagasse using high total solids and low enzyme loadings

Author:
Luiz Pereira Ramos; Larissa da Silva; Annielly Comelli Ballem; Ana Paula Pitarelo; Luana Marcele Chiarello; Marcos Henrique Luciano Silveira
Source:
Bioresource technology 2015 v.175 pp. 195-202
ISSN:
0960-8524
Subject:
agitation; biomass; enzymatic hydrolysis; ethanol production; glucans; glucose; hydrolysis; leaves; phosphoric acid; sugarcane; sugarcane bagasse; total solids; water content
Abstract:
... Hydrolysis of phosphoric acid-impregnated steam-treated sugarcane bagasse was pre-optimized using a face-centered central composite design in which the process variables were the substrate total solids (TS, %), agitation intensity (AI, rpm) and enzyme loading (EL, gg−1). Pretreatment was carried out at 180°C for 10min using cane bagasse with 50wt% moisture content containing 9.5mg of H3PO4 per gra ...
DOI:
10.1016/j.biortech.2014.10.087

17. Evaluation of simultaneous nitrification and denitrification under controlled conditions by an aerobic denitrifier culture

Author:
Yu Zhang; Zhuang Shi; Mingxiang Chen; Xiyang Dong; Jiti Zhou
Source:
Bioresource technology 2015 v.175 pp. 602-605
ISSN:
0960-8524
Subject:
Paracoccus versutus; aerobic conditions; carbon; carbon nitrogen ratio; denitrification; denitrifying microorganisms; iron; microbial growth; nitrification; nitrogen; nitrogen compounds; nitrogen dioxide
Abstract:
... Paracoccus versutus LYM was characterized with the ability of simultaneous nitrification and denitrification (SND) in presence of NH4+-N and NO3−-N (140mg/L-N each). However, there was approximate 95.80mg/L NO2−-N left during SND process. Fe2+ was added in the SND medium and it benefited bacterial growth and further converted NO2−-N a little. Besides, remaining NO2−-N could be completely reduced b ...
DOI:
10.1016/j.biortech.2014.10.016

18. Flux balance analysis of different carbon source fermentation with hydrogen producing Clostridium butyricum using Cell Net Analyzer

Author:
Razieh Rafieenia; Subba Rao Chaganti
Source:
Bioresource technology 2015 v.175 pp. 613-618
ISSN:
0960-8524
Subject:
Clostridium butyricum; NAD (coenzyme); acetates; biomass; butyrates; carbon; environmental factors; fermentation; fructose; galactose; hydrogen; hydrogen production; mannose; models; ribose; sucrose; trehalose
Abstract:
... A metabolic network model for Clostridium butyricum was developed using six different carbon sources (sucrose, fructose, galactose, mannose, trehalose and ribose) to study the fermentative H2 production. The model was used for investigation of H2 production and the ability of growth on different substrates to predict the maximum abilities for fermentative H2 production that each substrate can supp ...
DOI:
10.1016/j.biortech.2014.10.070

19. Freezing/thawing pretreatment coupled with biological process of thermophilic Geobacillus sp. G1: Acceleration on waste activated sludge hydrolysis and acidification

Author:
Chunxue Yang; Wenzong Liu; Zhangwei He; Sangeetha Thangavel; Ling Wang; Aijuan Zhou; Aijie Wang
Source:
Bioresource technology 2015 v.175 pp. 509-516
ISSN:
0960-8524
Subject:
Caloramator; Clostridium; Geobacillus; acidification; activated sludge; bacteria; chemical oxygen demand; fluorescence; fluorescence emission spectroscopy; freezing; hydrolysis; sequence analysis; short chain fatty acids; synergism; thawing
Abstract:
... A novel pretreatment method combining freezing/thawing with Geobacillus sp. G1 was employed to pretreat waste activated sludge (WAS) for enhancing the WAS hydrolysis and subsequent short-chain fatty acids (SCFAs) production. Results showed that freezing/thawing combined with Geobacillus sp. G1 pretreatment achieved the maximal concentrations of soluble protein from 40±6mg COD/L (non-pretreated) to ...
DOI:
10.1016/j.biortech.2014.10.154

20. Graphene oxide as electron shuttle for increased redox conversion of contaminants under methanogenic and sulfate-reducing conditions

Author:
Alejandra Colunga; J. Rene Rangel-Mendez; Lourdes B. Celis; Francisco J. Cervantes
Source:
Bioresource technology 2015 v.175 pp. 309-314
ISSN:
0960-8524
Subject:
azo dyes; graphene oxide; methanogens; pollutants; redox potential; sludge; sulfides
Abstract:
... Graphene oxide (GO) is reported for the first time as electron shuttle to increase the redox conversion of the azo compound, reactive red 2 (RR2, 0.5mM), and the nitroaromatic, 3-chloronitrobenzene (3CNB, 0.5mM). GO (5mgL−1) increased 10-fold and 7.6-fold the reduction rate of RR2 and 3CNB, respectively, in abiotic incubations with sulfide (2.6mM) as electron donor. GO also increased by 2-fold and ...
DOI:
10.1016/j.biortech.2014.10.101