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|Title:||Waste Management and Production of Future Fuels|
Kalia, V C
|Abstract:||The ever-increasing demand for energy, the diminishing energy source and the problem of environmental pollution have raised public awareness to the need for a non-polluting renewable energy source. Biowastes, a potential renewal energy source of different origins arc associated with a negative value due to disposal and pollution cost. Biological wastes of different origins (agricultural, industrial, municipal and domestic) undergo slow and uncontrolled degradation, which leads to environmental pollution and their disposal is a big problem due to high transportation costs and scarcity of dumping sites. Anaerobic degradation of these wastes to useful products like energy rich fuel gases can stabilize them and also serve as renewable energy source. Microbial production of methane from different biological wastes has been studied on a wide range of wastes. Thus. wastes utilization rather than its treatment emphasizes upon shifting the process from reducing the potential for pollution to synthesis of useful products. like gases and chemicals. Biomass amenability to conversion depends largely on the characteristic of the biomass (substrate) and the process requirements for conservation technology under consideration. Among the various by-products, which can be obtained by the fermentation of waste biomass, hydroger, has gained importance. It is regarded as the strongest contender as the clean fuel of the future. Microbial production of hydrogen has been demonstrated but the yields are quite low. large scale and continuous production is still in the incipient stage. In nature, wherever organic material is degraded microbially, under anaerobic condition and in the absence of sulphate and nitrate. methane is produced. When organic matter decompose without oxygen, the anaerobic bacteria produce methane and carbon dioxide. Anaerobic digestion provides appropriate solutions to problem associated with waste disposal and also generates biofuels as by-products.|
|ISSN:||0975-1084 (Online); 0022-4456 (Print)|
|Appears in Collections:||JSIR Vol.61(03) [March 2002]|
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