Dairy Waste and Potential of Small-Scale Biogas Digester for Rural Energy in India

Abstract

In order to reduce emissions of greenhouse gases, related global warming and dependency on fossil fuels, it is crucial to promote the uses of renewable energy, and conversion of biomass and organic waste into energy sources. In many parts of the world, a substantial increase in efforts for the conversion of waste into energy is currently being observed. Specifically, biogas technology has been emphasized for the conversion of animal waste into biomethane/biogas because livestock waste is considered to be a substantial source of ambient greenhouse gases, causing climate change. While biogas technology, an anerobic process to convert livestock waste into biogas, is promoted in both developed and developing countries, this review article is focused on improving our existing understanding of small-scale biogas technology and relevance of this technology in rural environment of India. A thorough review research has been performed to gather the information on livestock population, manure production, and potential of biogas technology in India to provide a wholistic information. A summary of the financial supports facilitated by various agencies, the cost of biogas plants, potential uses, and potential challenges in the dissemination of biogas technology in India has been discussed in this study. We anticipate that the data and interpretation provided here will help in understanding the scope of biogas technology in India and will help in formulating the policies which will support the implementation of biogas technologies in developing countries.

Research Progress and Analysis on Comprehensive Utilization of Livestock and Poultry Biogas Slurry as Agricultural Resources

“…The data presented in this study are openly available in reference number [1][2][3][4][5][6][7]11,12,14,[24][25][26]30].…”

“…The annual production of cow dung alone amounts to 730 million tons. In the years 1981-1982, the Ministry of Non-Conventional Energy Sources initiated the National Biogas Development Program, promoting small-scale biogas plants [26]. India mainly uses fixed dome biogas plants [27].…”

Is Decentralized Anaerobic Digestion a Solution? Analyzing Biogas Production and Residential Energy Demand

“…Nevertheless, the benefits of digestion are undeniable. This technology can aid in reducing greenhouse gas emissions and improve the quality of life in urban and rural areas by allowing access to a local energy source [33,34]. Therefore, the third scenario considers rural housing in tropical regions.…”

Utilization of dried dairy cow feces as biogas substrate and biogas sludge as organic soil conditioner

“…Dried dairy cow feces have quite high economic value because their manufacture does not require high operational costs, they can be mass produced, and the availability of raw materials in Indonesia is quite abundant. Storing solid waste from dairy farms in wet form requires a large area, creates odors, attracts flies, and supports microbial growth, causing contamination of air, soil, and air (F. Tufaner, 2016; Logan et al, 2017; Prachi Pandey et al, 2021). Making Dried dairy cow feces is a solution for providing raw materials for making biogas from solid waste from dairy farms.…”