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Environment / Ecology | IIT-D shows how Punjab can re-use farm waste -Manash Pratim Gohain

IIT-D shows how Punjab can re-use farm waste -Manash Pratim Gohain

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published Published on Nov 15, 2016   modified Modified on Nov 15, 2016
-The Times of India

New Delhi: Are you a farmer? How about earning a handsome amount from the stubble left behind in your field instead of burning it and adding to the pollution level? How about also getting bio-fertiliser and sustainable energy in the same deal?

An IIT-Delhi team has provided technical support to Asia's first biogas-based power plant which is now operating on paddystraw for large-scale biogas production in Fazilka, Punjab. The system is based on 100% use of paddy straw and has been generating nearly 4,000cubic metres per day of biogas from 10 tonnes of straw. This is in turngenerating 1MW power.

This sounds like welcome way out of the pollution mess that the capital has found itself in. Going by reports, 70% of Delhi's air pollution is due to stubble burning in Punjab, Haryana and other parts of north India.

Professor V K Vijay of Centre for Rural Development and Technology (CRDT) of IIT-D said paddy straw, if not burnt, could yield 2.181 million tonnes of oil equivalent or 25,365 gigaWatt hours per year. "Straw burning can be avoided throughinstallation of commercial biogas industries by using these agro biomass for both power generation and bio-fertiliser production to enrich soil health. The present level of utilisation at Fazilka has shown a saving of 120 gigaJoules per day energy which otherwise would have been released to the atmosphere by direct combustion along with therelease of enormous pollutants," said Vijay.

He added, "Burning straw biomass amounts to 30kg of particulate matter, 600kg of carbon monoxide, 14.6 tonnes of carbon dioxide and 20kg of sulphur dioxide emissions, which have significant toxicological properties and are potential carcinogens."

Abhinav Trivedi, a doctoral fellow working under the guidance of Vijay, developed this process that has better efficiency than conventional processes for biogas generation.

DrRamchandra of CRDT said the project was started in December 2011 by thePunjab government in association with Sampurn Agri Ventures Pvt Ltd. "After our intervention for around six months, the plant is running for nearly eight hours per day for the same amount of straw against two hours earlier. It is generating 7,500 kiloWatt hour per day and nearly five tonnes of bio-fertilisers per day," he said. Ramchandra also said that the system was able to harness over 45% of energy available in the material.
 
 
The Times of India, 13 November, 2016, please click here to access

The Times of India, 13 November, 2016, http://timesofindia.indiatimes.com/city/delhi/IIT-D-shows-how-Punjab-can-re-use-farm-waste/articleshow/55393906.cms


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