BIO- CNG - ENVIRONMENT
News: Greater Chennai Corporation generates 665tonnes of bio-CNG
What is in the news?
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The Greater Chennai
Corporation has generated 665tonnes of bio-compressed natural gas (bio-CNG) by
utilizing waste collected from various areas.
Key takeaways from the news:
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A total of 36,726tonnes
of wet waste collected from hotels and markets were utilized at the facility,
which has a 100-tonne processing capacity.
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The facility has the
capacity to process 100tonnes of waste. A total of 36,726tonnes of wet waste
collected from hotels and markets have been utilized to generate 665tonnes of
bio-CNG.
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The city generates 5,500tonnes
of municipal solid waste every day.
Bio- compressed natural gas:
About:
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It is an advanced version of biogas produced from
organic sources such as animal manure (farm yard manure) and food waste.
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It has been traditionally
used in India’s rural landscape.
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Its calorific value is
similar to that of Compressed Natural Gas (CNG), which is used sparingly in
India.
Constituents:
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Bio-CNG is a purified
form of biogas with over 95% pure
methane gas.
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It is similar to natural
gas in its composition (97% methane) and energy potential.
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While natural gas is a
fossil fuel, bio-CNG is a renewable form of energy produced from agricultural
and food waste
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A typical bio-CNG station
comprises a biogas purification unit, a compressor, and a high-pressure storage
system.
Production:
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Bio-CNG production
involves the commercial refining of biogas to enhance its methane content to
above 90 percent.
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Waste products are
decomposed to produce biogas, which is purified to enhance its methane content.
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The raw material is at
least 90 percent segregated biodegradable waste or crop residues.
Remaining solids are used as biofertilizers in
agriculture.