mohsen saghouri; Reza Abdi; Mohammadali Ebrahimi-Nik; Abbas Rohani; Mohammadali Maysami
Abstract
Increasing in consumption of fossil fuels and their price and environmental impacts, have led to a growing need and interest in replacement of these fuels with new and renewable energy sources. Anaerobic digestion is one of the attractive methods to produce biogas from organic matter.Wet state and solid ...
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Increasing in consumption of fossil fuels and their price and environmental impacts, have led to a growing need and interest in replacement of these fuels with new and renewable energy sources. Anaerobic digestion is one of the attractive methods to produce biogas from organic matter.Wet state and solid state arethe categories of anaerobic digestion. Some benefits of solid-state anaerobic digestion (SS-AD) include the need for smaller reactor capacity requirements, less energy used for heating, and easier handling.In this study, SS-AD of organic fraction of municipal solid waste (OFMSW) was examined. The study was done in the laboratory scale of (1-liter volume), mesophiliccondition (37°C), and 20% solid content. Characterization of OFMSW indicated good potential of these materials to produce biogas through SS-AD (69.37% of total solids, 76.2% of volatile solids, and a C/N ratio of 38.28%). According to the results of SS-AD, a total of 372 ml biogas/g of volatile solids was obtained under normal laboratory conditions, of which 230 ml (61.82%) was methane. Also, a reduction of 64.7% was obtained for volatile solids, which is one of the parameters of the experiment productivity.
