1
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Dwiatmoko AA, Seo J, Choi JW, Suh DJ, Jae J, Ha JM. Improved activity of a CaCO3-supported Ru catalyst for the hydrodeoxygenation of eugenol as a model lignin-derived phenolic compound. CATAL COMMUN 2019. [DOI: 10.1016/j.catcom.2019.04.024] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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2
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Chen JH, Liu L, Lim PE, Wei D. Effects of sugarcane bagasse hydrolysate (SCBH) on cell growth and fatty acid accumulation of heterotrophic Chlorella protothecoides. Bioprocess Biosyst Eng 2019; 42:1129-1142. [DOI: 10.1007/s00449-019-02110-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Accepted: 03/18/2019] [Indexed: 12/25/2022]
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3
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Integrated Functional-Omics Analysis of Thermomyces lanuginosus Reveals its Potential for Simultaneous Production of Xylanase and Substituted Xylooligosaccharides. Appl Biochem Biotechnol 2018; 187:1515-1538. [PMID: 30267287 DOI: 10.1007/s12010-018-2873-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Accepted: 08/24/2018] [Indexed: 11/27/2022]
Abstract
Thermophiles have several beneficial properties for the conversion of biomass at high temperatures. Thermomyces lanuginosus is a thermophilic filamentous fungus that was shown to secrete 40 glycoside hydrolases and 25 proteases when grown on different carbon sources. Among the 13 identified glycoside hydrolases with high expression levels, 9 were reduced sugar glycosidases (RSGs) belonging to seven GH families, and 7 of the 10 identified proteases were exopeptidases belonging to six different protease families. High expression of RSGs and exopeptidases may allow the fungus to efficiently degrade oligosaccharides and oligopeptides in saprophytic habitats. There were no xylan side chain-degrading enzymes predicted in the genome of T. lanuginosus, and only one thermophilic GH11 xylanase (g4601.t1) and one GH43 xylosidase (g3706.t1) were detected by liquid chromatography-mass spectrometry/mass spectrometry when T. lanuginosus grown on xylan, which led to the accumulation of substituted xylooligosaccharides (SXOS) during corncob xylan degradation where SXOS output made up more than 8% of the total xylan. The SXOS are beneficial prebiotics and important inducers for enzymes secretion of microorganisms. Thus, T. lanuginosus exhibits distinct advantages in utilizing cheap raw materials producing one thermostable xylanase and the high value-added SXOS as well as microbial inoculants to compost by batch fermentation.
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4
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Conti F, Wiedemann L, Sonnleitner M, Goldbrunner M. Thermal behaviour of viscosity of aqueous cellulose solutions to emulate biomass in anaerobic digesters. NEW J CHEM 2018. [DOI: 10.1039/c7nj03199h] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Investigating dynamic viscosity of aqueous cellulose solutions to mimic biomass slurry in scale-down laboratory tanks representing biogas digesters.
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Affiliation(s)
- Fosca Conti
- Institute of new Energy Systems
- Technische Hochschule Ingolstadt
- 85049 Ingolstadt
- Germany
- Department of Chemical Sciences
| | - Leonhard Wiedemann
- Institute of new Energy Systems
- Technische Hochschule Ingolstadt
- 85049 Ingolstadt
- Germany
| | - Matthias Sonnleitner
- Institute of new Energy Systems
- Technische Hochschule Ingolstadt
- 85049 Ingolstadt
- Germany
| | - Markus Goldbrunner
- Institute of new Energy Systems
- Technische Hochschule Ingolstadt
- 85049 Ingolstadt
- Germany
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5
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Dhiman SS, David A, Shrestha N, Johnson GR, Benjamin KM, Gadhamshetty V, Sani RK. Simultaneous hydrolysis and fermentation of unprocessed food waste into ethanol using thermophilic anaerobic bacteria. BIORESOURCE TECHNOLOGY 2017; 244:733-740. [PMID: 28822285 DOI: 10.1016/j.biortech.2017.07.102] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2017] [Revised: 07/18/2017] [Accepted: 07/19/2017] [Indexed: 06/07/2023]
Abstract
The one-pot CRUDE (Conversion of Raw and Untreated Disposal into Ethanol) process was developed for simultaneous hydrolysis and fermentation of unprocessed food waste into ethanol using thermophilic (growing at 65°C) anaerobic bacteria. Unlike existing waste to energy technologies, the CRUDE process obviates the need for any pre-treatment or enzyme addition. A High-Temperature-High-Pressure (HTHP) distillation technique was also applied that facilitated efficient use of fermentation medium, inoculum recycling, and in-situ ethanol collection. For material balancing of the process, each characterized component was represented in terms of C-mol. Recovery of 94% carbon at the end confirmed the operational efficiency of CRUDE process. The overall energy retaining efficiency calculated from sugars to ethanol was 1262.7kJdryweightkg-1 of volatile solids using HTHP. These results suggest that the CRUDE process can be a starting point for the development of a commercial ethanol production process.
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Affiliation(s)
- Saurabh Sudha Dhiman
- Department of Chemical and Biological Engineering, South Dakota School of Mines and Technology, Rapid City, SD 57701, USA; Composite and Nanocomposite Advanced Manufacturing Center - Biomaterials (CNAM/Bio Center), Rapid City, SD 57701, USA
| | - Aditi David
- Department of Chemical and Biological Engineering, South Dakota School of Mines and Technology, Rapid City, SD 57701, USA
| | - Namita Shrestha
- Department of Civil and Environmental Engineering, South Dakota School of Mines and Technology, Rapid City, SD 57701, USA
| | - Glenn R Johnson
- Hexpoint Technologies LLC, 1159, Panama City, Florida 32402, USA
| | - Kenneth M Benjamin
- Department of Chemical and Biological Engineering, South Dakota School of Mines and Technology, Rapid City, SD 57701, USA
| | - Venkataramana Gadhamshetty
- Department of Civil and Environmental Engineering, South Dakota School of Mines and Technology, Rapid City, SD 57701, USA; Surface Engineering Research Center, South Dakota School of Mines and Technology, Rapid City, SD 57701, USA
| | - Rajesh K Sani
- Department of Chemical and Biological Engineering, South Dakota School of Mines and Technology, Rapid City, SD 57701, USA; Composite and Nanocomposite Advanced Manufacturing Center - Biomaterials (CNAM/Bio Center), Rapid City, SD 57701, USA.
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7
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Huang Q, Lin X, Xiong L, Huang C, Zhang H, Luo M, Tian L, Chen X. Equilibrium, kinetic and thermodynamic studies of acid soluble lignin adsorption from rice straw hydrolysate by a self-synthesized macro/mesoporous resin. RSC Adv 2017. [DOI: 10.1039/c7ra01058c] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A self-synthesized HQ-8 resin was prepared using a O/W suspension polymerization technique and employed as a potential adsorbent for the removal of acid soluble lignin (ASL) from rice straw hydrolysate (RSH).
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Affiliation(s)
- Qianlin Huang
- Guangzhou Institute of Energy Conversion
- Chinese Academy of Sciences
- Guangzhou 510640
- People's Republic of China
- Key Laboratory of Renewable Energy
| | - Xiaoqing Lin
- Guangzhou Institute of Energy Conversion
- Chinese Academy of Sciences
- Guangzhou 510640
- People's Republic of China
- Key Laboratory of Renewable Energy
| | - Lian Xiong
- Guangzhou Institute of Energy Conversion
- Chinese Academy of Sciences
- Guangzhou 510640
- People's Republic of China
- Key Laboratory of Renewable Energy
| | - Chao Huang
- Guangzhou Institute of Energy Conversion
- Chinese Academy of Sciences
- Guangzhou 510640
- People's Republic of China
- Key Laboratory of Renewable Energy
| | - Hairong Zhang
- Guangzhou Institute of Energy Conversion
- Chinese Academy of Sciences
- Guangzhou 510640
- People's Republic of China
- Key Laboratory of Renewable Energy
| | - Mutan Luo
- Guangzhou Institute of Energy Conversion
- Chinese Academy of Sciences
- Guangzhou 510640
- People's Republic of China
- Key Laboratory of Renewable Energy
| | - Lanlan Tian
- Guangzhou Institute of Energy Conversion
- Chinese Academy of Sciences
- Guangzhou 510640
- People's Republic of China
- Key Laboratory of Renewable Energy
| | - Xinde Chen
- Guangzhou Institute of Energy Conversion
- Chinese Academy of Sciences
- Guangzhou 510640
- People's Republic of China
- Key Laboratory of Renewable Energy
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8
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Katsimpouras C, Dimarogona M, Petropoulos P, Christakopoulos P, Topakas E. A thermostable GH26 endo-β-mannanase from Myceliophthora thermophila capable of enhancing lignocellulose degradation. Appl Microbiol Biotechnol 2016; 100:8385-97. [PMID: 27193267 DOI: 10.1007/s00253-016-7609-2] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Revised: 04/24/2016] [Accepted: 05/01/2016] [Indexed: 10/21/2022]
Abstract
The endomannanase gene em26a from the thermophilic fungus Myceliophthora thermophila, belonging to the glycoside hydrolase family 26, was functionally expressed in the methylotrophic yeast Pichia pastoris. The putative endomannanase, dubbed MtMan26A, was purified to homogeneity (60 kDa) and subsequently characterized. The optimum pH and temperature for the enzymatic activity of MtMan26A were 6.0 and 60 °C, respectively. MtMan26A showed high specific activity against konjac glucomannan and carob galactomannan, while it also exhibited high thermal stability with a half-life of 14.4 h at 60 °C. Thermostability is of great importance, especially in industrial processes where harsh conditions are employed. With the aim of better understanding its structure-function relationships, a homology model of MtMan26A was constructed, based on the crystallographic structure of a close homologue. Finally, the addition of MtMan26A as a supplement to the commercial enzyme mixture Celluclast® 1.5 L and Novozyme® 188 resulted in enhanced enzymatic hydrolysis of pretreated beechwood sawdust, improving the release of total reducing sugars and glucose by 13 and 12 %, respectively.
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Affiliation(s)
- Constantinos Katsimpouras
- Biotechnology Laboratory, School of Chemical Engineering, National Technical University of Athens, 9 Iroon Polytechniou Str., Zografou Campus, Athens, 15780, Greece
| | - Maria Dimarogona
- Biotechnology Laboratory, School of Chemical Engineering, National Technical University of Athens, 9 Iroon Polytechniou Str., Zografou Campus, Athens, 15780, Greece
| | - Pericles Petropoulos
- Biotechnology Laboratory, School of Chemical Engineering, National Technical University of Athens, 9 Iroon Polytechniou Str., Zografou Campus, Athens, 15780, Greece
| | - Paul Christakopoulos
- Biochemical and Chemical Process Engineering, Division of Sustainable Process Engineering, Department of Civil, Environmental and Natural Resources Engineering, Luleå University of Technology, SE-97187, Luleå, Sweden
| | - Evangelos Topakas
- Biotechnology Laboratory, School of Chemical Engineering, National Technical University of Athens, 9 Iroon Polytechniou Str., Zografou Campus, Athens, 15780, Greece.
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9
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Dwiatmoko AA, Zhou L, Kim I, Choi JW, Suh DJ, Ha JM. Hydrodeoxygenation of lignin-derived monomers and lignocellulose pyrolysis oil on the carbon-supported Ru catalysts. Catal Today 2016. [DOI: 10.1016/j.cattod.2015.08.027] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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10
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Yu B, Zhang D, Dai X, Lou Z, Yuan H, Zhu N. The synthetic effect on volatile fatty acid disinhibition and methane production enhancement by dosing FeCl3in a sludge thermophilic anaerobic digestion system. RSC Adv 2016. [DOI: 10.1039/c5ra26245c] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A dosage gradient of FeCl3was adopted and 9.92 mg Fe per g DS was favorable for the disinhibition of VFAs in sludge thermophilic digestion system.
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Affiliation(s)
- Bao Yu
- School of Environmental Science and Engineering
- Shanghai Jiao Tong University
- Shanghai
- P. R. China
| | - Dongling Zhang
- School of Environmental Science and Engineering
- Shanghai Jiao Tong University
- Shanghai
- P. R. China
| | - Xiaohu Dai
- National Engineering Research Center for Urban Pollution Control
- School of Environmental Science and Engineering
- Tongji University
- Shanghai 200092
- P. R. China
| | - Ziyang Lou
- School of Environmental Science and Engineering
- Shanghai Jiao Tong University
- Shanghai
- P. R. China
| | - Haiping Yuan
- School of Environmental Science and Engineering
- Shanghai Jiao Tong University
- Shanghai
- P. R. China
| | - Nanwen Zhu
- School of Environmental Science and Engineering
- Shanghai Jiao Tong University
- Shanghai
- P. R. China
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11
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Matsakas L, Rova U, Christakopoulos P. Sequential parametric optimization of methane production from different sources of forest raw material. Front Microbiol 2015; 6:1163. [PMID: 26539186 PMCID: PMC4611140 DOI: 10.3389/fmicb.2015.01163] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Accepted: 10/06/2015] [Indexed: 11/13/2022] Open
Abstract
The increase in environmental problems and the shortage of fossil fuels have led to the need for action in the development of sustainable and renewable fuels. Methane is produced through anaerobic digestion of organic materials and is a biofuel with very promising characteristics. The success in using methane as a biofuel has resulted in the operation of several commercial-scale plants and the need to exploit novel materials to be used. Forest biomass can serve as an excellent candidate for use as raw material for anaerobic digestion. During this work, both hardwood and softwood species-which are representative of the forests of Sweden-were used for the production of methane. Initially, when untreated forest materials were used for the anaerobic digestion, the yields obtained were very low, even with the addition of enzymes, reaching a maximum of only 40 mL CH4/g VS when birch was used. When hydrothermal pretreatment was applied, the enzymatic digestibility improved up to 6.7 times relative to that without pretreatment, and the yield of methane reached up to 254 mL CH4/g VS. Then the effect of chemical/enzymatic detoxification was examined, where laccase treatment improved the methane yield from the more harshly pretreated materials while it had no effect on the more mildly pretreated material. Finally, addition of cellulolytic enzymes during the digestion improved the methane yields from spruce and pine, whereas for birch separate saccharification was more beneficial. To achieve high yields in spruce 30 filter paper units (FPU)/g was necessary, whereas 15 FPU/g was enough when pine and birch were used. During this work, the highest methane yields obtained from pine and birch were 179.9 mL CH4/g VS and 304.8 mL CH4/g VS, respectively. For mildly and severely pretreated spruce, the methane yields reached 259.4 mL CH4/g VS and 276.3 mL CH4/g VS, respectively. We have shown that forest material can serve as raw material for efficient production of methane. The initially low yields from the untreated materials were significantly improved by the introduction of a hydrothermal pretreatment. Moreover, enzymatic detoxification was beneficial, but mainly for severely pretreated materials. Finally, enzymatic saccharification increased the methane yields even further.
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Affiliation(s)
- Leonidas Matsakas
- Biochemical Process Engineering, Division of Chemical Engineering, Department of Civil, Environmental and Natural Resources Engineering, Luleå University of Technology Luleå, Sweden
| | - Ulrika Rova
- Biochemical Process Engineering, Division of Chemical Engineering, Department of Civil, Environmental and Natural Resources Engineering, Luleå University of Technology Luleå, Sweden
| | - Paul Christakopoulos
- Biochemical Process Engineering, Division of Chemical Engineering, Department of Civil, Environmental and Natural Resources Engineering, Luleå University of Technology Luleå, Sweden
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12
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Metagenome approaches revealed a biological prospect for improvement on mesophilic cellulose degradation. Appl Microbiol Biotechnol 2015; 99:10871-9. [DOI: 10.1007/s00253-015-6945-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2015] [Revised: 08/11/2015] [Accepted: 08/18/2015] [Indexed: 10/23/2022]
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13
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Lin R, Cheng J, Ding L, Song W, Qi F, Zhou J, Cen K. Subcritical water hydrolysis of rice straw for reducing sugar production with focus on degradation by-products and kinetic analysis. BIORESOURCE TECHNOLOGY 2015; 186:8-14. [PMID: 25795997 DOI: 10.1016/j.biortech.2015.03.047] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2015] [Revised: 03/07/2015] [Accepted: 03/09/2015] [Indexed: 06/04/2023]
Abstract
The competitive reactions of reducing sugar production and degradation in the subcritical water hydrolysis of rice straw were investigated to optimise reducing sugar yield. The optimised conditions (280°C, 20 MPa, rice straw concentration of 5 wt.% and agitation speed of 200 rpm) resulted in a reducing sugar yield of 0.346 g/g rice straw because of the enhanced reducing sugar production and decreased sugar degradation. The sugar yield increased when the temperature increased from 250°C to 280°C, but it decreased when the temperature further increased to 300°C because of the degradation of monosaccharides (e.g. glucose and xylose) into by-products (e.g. 2-methyltetrahydrofuran and acetic acid). A first-order reaction model was developed to elucidate the competitive reaction kinetics of sugar production and degradation at various temperatures. The highest reducing sugar yield based on the model was achieved at 280°C with the highest production and lowest degradation rates.
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Affiliation(s)
- Richen Lin
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China
| | - Jun Cheng
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China.
| | - Lingkan Ding
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China
| | - Wenlu Song
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China; Department of Life Science and Engineering, Jining University, Jining 273155, China
| | - Feng Qi
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China
| | - Junhu Zhou
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China
| | - Kefa Cen
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China
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14
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Sheng T, Gao L, Zhao L, Liu W, Wang A. Direct hydrogen production from lignocellulose by the newly isolated Thermoanaerobacterium thermosaccharolyticum strain DD32. RSC Adv 2015. [DOI: 10.1039/c5ra20000h] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The comparison of hydrogen production by conventional process and consolidated bioprocessing.
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Affiliation(s)
- Tao Sheng
- State Key Lab of Urban Water Resource and Environment
- Harbin Institute of Technology
- Harbin 150090
- China
| | - Lingfang Gao
- CAS Key Laboratory of Environmental Biotechnology
- Research Center for Eco-Environmental Sciences
- Chinese Academy of Sciences
- Beijing
- China
| | - Lei Zhao
- State Key Lab of Urban Water Resource and Environment
- Harbin Institute of Technology
- Harbin 150090
- China
| | - Wenzong Liu
- CAS Key Laboratory of Environmental Biotechnology
- Research Center for Eco-Environmental Sciences
- Chinese Academy of Sciences
- Beijing
- China
| | - Aijie Wang
- State Key Lab of Urban Water Resource and Environment
- Harbin Institute of Technology
- Harbin 150090
- China
- CAS Key Laboratory of Environmental Biotechnology
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15
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Yu B, Zhang D, Shan A, Lou Z, Yuan H, Huang X, Yuan W, Dai X, Zhu N. Methane-rich biogas production from waste-activated sludge with the addition of ferric chloride under a thermophilic anaerobic digestion system. RSC Adv 2015. [DOI: 10.1039/c5ra02362a] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Three ferric salts, i.e. Fe(NO3)3, Fe2(SO4)3 and FeCl3 were introduced to test the potential effects on sludge thermophilic anaerobic digestion, and a favourable environment was created with the addition of FeCl3.
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Affiliation(s)
- Bao Yu
- School of Environmental Science and Engineering
- Shanghai Jiao Tong University
- Shanghai
- P. R. China
| | - Dongling Zhang
- School of Environmental Science and Engineering
- Shanghai Jiao Tong University
- Shanghai
- P. R. China
| | - Aidang Shan
- School of Environmental Science and Engineering
- Shanghai Jiao Tong University
- Shanghai
- P. R. China
| | - Ziyang Lou
- School of Environmental Science and Engineering
- Shanghai Jiao Tong University
- Shanghai
- P. R. China
| | - Haiping Yuan
- School of Environmental Science and Engineering
- Shanghai Jiao Tong University
- Shanghai
- P. R. China
| | - Xiaoting Huang
- School of Environmental Science and Engineering
- Shanghai Jiao Tong University
- Shanghai
- P. R. China
| | - Wenxiang Yuan
- Shanghai Environmental Sanitation Engineering Design Institute
- Shanghai
- P. R. China
| | - Xiaohu Dai
- National Engineering Research Center for Urban Pollution Control
- School of Environmental Science and Engineering
- Tongji University
- Shanghai 200092
- P. R. China
| | - Nanwen Zhu
- School of Environmental Science and Engineering
- Shanghai Jiao Tong University
- Shanghai
- P. R. China
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16
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Evaluation of dried sweet sorghum stalks as raw material for methane production. BIOMED RESEARCH INTERNATIONAL 2014; 2014:731731. [PMID: 25210715 PMCID: PMC4153003 DOI: 10.1155/2014/731731] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2014] [Revised: 07/17/2014] [Accepted: 07/23/2014] [Indexed: 11/20/2022]
Abstract
The potential of utilizing dried sweet sorghum stalks as raw material for anaerobic digestion has been evaluated. Two different treatments were tested, a mild thermal and an enzymatic, alone or in combination. Thermal pretreatment was found to decrease the methane yields, whereas one-step enzymatic treatment resulted in a significant increase of 15.1% comparing to the untreated sweet sorghum. Subsequently, in order to increase the total methane production, the combined effect of enzyme load and I/S on methane yields from sweet sorghum was evaluated by employing response surface methodology. The obtained model showed that the maximum methane yield that could be achieved is 296 mL CH4/g VS at I/S ratio of 0.35 with the addition of 11.12 FPU/g sweet sorghum.
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17
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Zhou M, Yan J, Li Y, Geng C, He C, Wang K, Fu Q. Interfacial strength and mechanical properties of biocomposites based on ramie fibers and poly(butylene succinate). RSC Adv 2013. [DOI: 10.1039/c3ra43713b] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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