alexa ENHANCEMENT OF BIOGAS PRODUCTION THROUGH SUSTAINABLE FEEDSTOCK UTILIZATION BY CO-DIGESTION


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Research Article

ENHANCEMENT OF BIOGAS PRODUCTION THROUGH SUSTAINABLE FEEDSTOCK UTILIZATION BY CO-DIGESTION

 
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Abstract

Commercialization of biogas is a finite concern that desires scientific development to assure significant biogas production from various feedstocks. Though, the employment of wastes and lignocellulosic materials in a sustainable manner to accomplish substrate availability is an imperative criterion that enforces economic development and environmental welfare. Since, the present study has been designed to meet enhanced biogas and methane production from various substrates through co-digestion with cow dung. In spite of optimum C/N ratio, the substrate mixtures like poultry waste-cow dung (1:1), municipal solid waste-cow dung (1:2), fruit-vegetable waste-cow dung (1:1), agricultural waste-cow dung (1:2) and kitchen waste-cow dung (1:1) were prepared and then allowed to digest in a laboratory scale anaerobic digester, until 30th day. The quantitative analysis of biogas production through water displacement method showed that the highest water displacement of 171 ml was achieved in poultry waste- cow dung mixture at 27th day. The parameters such as pH and temperature were increased during the digestion process. The biochemical characterization of initial and final substrate showed that there was a gradual decrease in chemical characteristics except nitrogen content from 0th day to 30th day. The characterization of biogas at different time intervals revealed that poultry waste- cow dung mixture produced biogas with highest methane content of 72.6% at 30th day. However, it was explored that the co-digestion assist to enhance biogas production from various substrates used, where the poultry waste–cow dung (1:1) mixture showed significant methane and biogas production. Hence the present study concluded that a mixture of poultry waste–cow dung (1:1) can be promising for efficient production of biogas to accomplish economic feasibility in the meanwhile.

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