UTILIZATION OF CATTLE DUNG FOR GENERATION OF ELECTRICITY
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Date
40583
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University of Agricultural Sciences GKVK, Bangalore
Abstract
Nowadays Microbial Fuel Cells (MFC) are very promising
technology in mitigating greenhouse gas effect. MFC is a device that
converts chemical energy to electrical energy by their catalytic reaction.
An attempt was made to generate electricity by using cattle dung.
Results revealed that, the distance between electrodes (zinc and carbon)
had negligible or no role in voltage generation. Among the different
concentrations of cattle dung with distilled water, 1:1 ratio of cattle dung
slurry was found to be the best in terms of both maximum and stable
voltage generation. Among different types of waste water formulations
used with sterilized cattle dung slurry, it was found that, biogas slurry
was producing stable and maximum voltage followed by sewage waste
water. The bacterial consortium identified for electric power generation
from biogas slurry had Escherichia coli, Bacillus sp., Pseudomonas sp.,
Cellulomonas sp., Staphylococcus sp., Enterobacter sp. and Micrococcus
sp. as the major components. Testing on different concentrations of
glucose for electricity generation, revealed that, voltage generation was
directly proportional to concentration of glucose. Under different
conditions of oxygen, voltage generation was maximum under anaerobic
condition, followed by partial anaerobic condition. In applicability of
MFC, it was observed that, both scientific calculator as well as LED- bulb
were operative continuously for a period of 30 days. But rechargeable
battery failed to recharge from the final setup of MFC as it failed to reach
required amount of voltage.
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