Review on potential of using agricultural, municipal solid and industrial wastes as substrates for biogas production in Nigeria

Biomass and wastes are increasingly being used as major energy sources not only in Nigeria but also worldwide. Different wastes/biomass to energy technologies have been used in the past by several researchers but anaerobic digestion happens to be the best option due to its eco-friendliness and simplicity of its design. There are huge amounts of wastes generated from agriculture, municipalities and industries both in rural Nigeria and urban areas that are being underutilized due to lack of information on their potential for biogas production. Laboratory, pilot and full-scale studies have shown that agricultural, municipal solid and industrial wastes all have potential for bioenergy generation. The potential of bioenergy production from agricultural waste, municipal solid waste (MSW) and industrial waste within the country has been sought in various scientific databases from 1997 to 2020 and related information was obtained. This review article examines the agricultural, municipal solid and industrial wastes found in Nigeria and the biogas production potential from these wastes usable as alternative to fossil fuels. Current trend, recent issues and future prospect of anaerobic digestion are also considered in this article.