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Thursday, 28 January 2016

BIOGAS: A FIT OPTION FOR RURAL ENERGY

BIOGAS: A FIT OPTION FOR RURAL ENERGY
* Energy requirement in rural area.
* Biogas potential in India.
* Biogas: properties and applications.
* Biogas plant designs.
* Contribution to rural areas.

* Conclusion. 
INTRODUCTION
Biogas is clean environment friendly fuel that can be obtained by anaerobic digestion of animal residues and domestic and farm wastes, abundantly available in the countryside.
Biogas is an important renewable energy resource for rural areas in India
Biogas generally comprise of 55-65 % methane, 35-45 % carbon
 dioxide, 0.5-1.0 % hydrogen sulfide and traces of water vapor.
Average calorific value of biogas is 20 MJ/m3 (4713 kcal/m3).

•Biogas like Liquefied Petroleum Gas (LPG) cannot be 
liquefied under normal temperature and pressure.

•Critical temperature required for liquefaction of methane is 
-82.1oC at 4.71MPa pressure, therefore use of biogas is
 limited nearby the biogas plant.
•An estimate indicates that India has a potential of generating 6.38 X 1010 m3 of biogas from 980 million tones of cattle dung produced annually.
•The heat value of this gas amounts to 1.3 X 1012 MJ. In 
addition, 350 million tones of manure would also produce along 
with biogas.  
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