Efficient conversion of wheat straw wastes into biohydrogen gas by cow dung compost

Fan, Yaoting; Zhang, Yahui; Zhang, Shufang; Hou, Hongwei; Ren, Baozeng

doi:10.1016/j.biortech.2005.02.049

Cited by 308 publications

(113 citation statements)

References 7 publications

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“…Chemical and biological approaches to sustainable energy production from the liquefied hydrolysates to energy carriers, such as methane, ethanol, and H 2 , have been developed. However, many of these approaches encounter technical and economical hurdles (10,12,15,16). An alternative strategy is direct conversion of wheat straw biomass to electrical energy in microbial fuel cells (MFCs).…”

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confidence: 99%

“…MFCs are bioelectrochemical reactors in which microorganisms mediate the direct conversion of chemical energy stored in organic matter or bulk biomass into electrical energy (12,15,16,40). Various substrates, such as simple carbohydrates, lowmolecular-weight organic acids, starch, amino acids, chitin, cellulose, domestic wastewater, food-processing wastewater, recycled paper wastewater, and marine sediment organic matter, have been successfully utilized for power generation in MFCs (16-18, 27, 30, 33).…”

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confidence: 99%

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Generation of Electricity and Analysis of Microbial Communities in Wheat Straw Biomass-Powered Microbial Fuel Cells

Zhang

Min

Huang

et al. 2009

Appl Environ Microbiol

179

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Electricity generation from wheat straw hydrolysate and the microbial ecology of electricity-producing microbial communities developed in two-chamber microbial fuel cells (MFCs) were investigated. The power density reached 123 mW/m 2 with an initial hydrolysate concentration of 1,000 mg chemical oxygen demand (COD)/liter, while coulombic efficiencies ranged from 37.1 to 15.5%, corresponding to the initial hydrolysate concentrations of 250 to 2,000 mg COD/liter. The suspended bacteria found were different from the bacteria immobilized in the biofilm, and they played different roles in electricity generation from the hydrolysate. The bacteria in the biofilm were consortia with sequences similar to those of Bacteroidetes (40% of sequences), Alphaproteobacteria (20%), Bacillus (20%), Deltaproteobacteria (10%), and Gammaproteobacteria (10%), while the suspended consortia were predominately Bacillus (22.2%). The results of this study can contribute to improving understanding of and optimizing electricity generation in microbial fuel cells.

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confidence: 99%

mentioning

confidence: 99%

Generation of Electricity and Analysis of Microbial Communities in Wheat Straw Biomass-Powered Microbial Fuel Cells

Zhang

Min

Huang

et al. 2009

Appl Environ Microbiol

179

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“…Similarly, the problem of post-harvest crop straws can be well solved in this approach. Although a number of practices and studies on how to make use of those crop straws more commercially, for instance, to produce ethanol and the like bio-hydrogen gas [17][ 40], have been attempted, those approaches could not be widely implemented due to the issues of cost effectiveness and how to dispose the process residuals. Up to date, in many places those straws are simply burned in the field after the harvest, which induces serious air pollution and smog problem.…”

Section: The Proposed New Solutionmentioning

confidence: 99%

The W Model, a Systematic Engineering for Water Source Clearance, Renewable Energy Production, and Ecological Agricuture Development – A Proposal for Sustainable Development

Tong-yuan¹

2017

JSD

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This article proposes a systematic engineering for sustainable economic and ecologic development. This system is deemed to be applicable in any country of the world. The system aims to realize five important objectives: water source clearance, energy saving and emission reduction, renewable energy and organic fertilizer production, and ecological agriculture development, all in large scale and at low cost. The main conception of the new system to reach these goals is the replacement of the conventional sewage treatment approach with more efficient and more ecological process -the natural fermentation of the mixture of the urban sewage and agrarian wastes, such that water body clearance, including water de-eutrophication, green algae prevention and siltation dredging will all be accomplished at virtually a zero cost. Along with this process, the system can produce a vast amount of renewable energy and organic fertilizers, consequently ecological agriculture development in large scale can be realized. As a result, this system will greatly reduce the use of chemical fertilizers thus largely reduce the consumption of fossil energy and the related polluting emissions. This system is thus fully a circular economy model through full west-reuse processes, which ultimately will enhance our life quality with healthier food and living environment. The system is flexible and adaptable to be implemented in either small towns or megacities. The implementation and operation of this system will also benefits employment growth. Lastly, in terms of economic feasibility and profitability, millions to billions of dollars of annual revenue can be generated from the running of this system in a country.

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“…Lignocellulosic raw materials are generally composed of 40-50% cellulose, 25-35% hemicelluloses and 15-20% lignin [8]. A pretreatment stage is necessary to dissociate the plant cell wall in order to improve the accessibility of chemicals and/or microorganisms to cellulose for possible conversions [23]. The pretreatment processes target the removal of lignin, which improves the digestibility of cellulose in the following hydrolysis process [24].…”

Section: Pretreatment Of Biomassmentioning

confidence: 99%

Production of Biofuels from Cellulose of Woody Biomass

Fatehi¹

2013

Cellulose - Biomass Conversion

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Efficient conversion of wheat straw wastes into biohydrogen gas by cow dung compost

Cited by 308 publications

References 7 publications

Generation of Electricity and Analysis of Microbial Communities in Wheat Straw Biomass-Powered Microbial Fuel Cells

Generation of Electricity and Analysis of Microbial Communities in Wheat Straw Biomass-Powered Microbial Fuel Cells

The W Model, a Systematic Engineering for Water Source Clearance, Renewable Energy Production, and Ecological Agricuture Development – A Proposal for Sustainable Development

Production of Biofuels from Cellulose of Woody Biomass

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