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Biogas is a renewable energy carrier and the production of biogas is associated with double benefits: elimination of environmental pollution problems is coupled with the generation of useful energy. Biogas technologies commonly apply natural anaerobic consortia of microbes. This is partly due to the fact that, from a microbiological aspect, this is a very complicated and complex system. Moreover,...
On the base of the continuous flow test of mixed micro-flora, our research were the fermentation types and their H2-Production capacity and the operation control of the biohydrogen production reactor. Also contrasted different ways to suppress the methanogenic activity. When the pH was between 6.57-;7.1, continuous stirred tank (CSTR) I got butyric acid type fermentation. The content of hydrogen in...
A continuous stirred-tank reactor (CSTR) for biohydrogen production using Biohybacterium R3 which is a new anaerobic hydrogenogens bacteria. The point was to assess the start-up and continuous operation characteristics. It was found that at pH of about 4.5, the COD concentration of 6000 mg·L-1, and a hydraulic retention time (HRT) of 8h, a hydrogen producing microbial community could be adapt on the...
Hydrogen production from diluted molasses by pure microbial species R3 was investigated in a continuous stirred tank reactor (CSTR) under continuous flow condition in this paper. The reactor used in this study was made of organic glasses. The experimental results indicated that the hydrogen-producing system could attain a stable state for hydrogen production with a hydraulic retention time (HRT) of...
Over the last decade, the U.S. transportation industry has produced approximately 60% of overall U.S. CO2 emissions according to the U.S. Department of Transportation (DOT). A greener fuel alternative for the transportation system is needed to reduce energy-related emissions and to aid in the overall decrease in the consumption of fossil fuels. The system to be analyzed is defined as the Roadway Transportation...
Biogas, produced in anaerobic digestion (AD)-plants, primarily consists of methane (CH4) and carbon dioxide (CO2) with smaller amount of hydrogen sulfide (H2S) and ammonia (NH3). Trace amount of some other gases are occasionally present in biogas. For electricity generation from biogas needs reduction of H2S, because it forms a complex bond with iron hence damage the generator. Reduction of Hydrogen...
One of the most threatening problems in the world at present is the depletion of fossil fuels. The world is facing an acute shortage of fuel sources. Some break-through has been achieved in the form of solar energy, hydrogen fuel cells, biofuels etc. The use of these alternatives decreases the dependency on the present fossil fuels and also reduces the pollution to a great extent. In this paper, the...
The world is facing the threat of depleting fossil fuel resources. This could case a major setback to the world. Researches show that the fossil fuels will get depleted completely in about 15-20 years. The world needs an alternative source of fuels that could keep the world running on its wheels. Alternatives in the form of solar energy, wind energy, biofuels, hydrogen fuels etc have been found, but...
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