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Analysis of production of CH4 & CO2 by using dry and wet systems of anaerobic digestion under mesophilic conditions

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Amit Kumar Dey, bAbhijit Dey, cSuchitra Sukladas
» doi: 10.48047/ecb/2023.12.10.095

Abstract

Municipal solid waste (MSW) has a high amount of organic component that could be converted into methane gas if digested anaerobically. Hence one should make use of the energy associated with MSW by converting it into methane gas. Generally anaerobic digestion is always being carried under mechanically operated digesters which requires large number of investments which are intended for commercial production of methane gas, so the objective of this work was the production of methane gas from simple man-made digesters which are very easy to construct and operate and the main point of importance is to study the production trend of methane gas. Secondly anaerobic digestion requires certain degree of temperature preferably 20°C and more, so it wasworthwhile to know the effect in the gas production if the temperature falls below 20°C. So, the topic of the analysis was selected by keeping in mind the season of the year which was mainly winter, i.e. December to April.Although the gas obtained from anaerobic digestion are many but the main component parts of gas consist of methane (approx. 55%) and carbon dioxide (approx. =45%) and traces of sulfur dioxide [1]. In this study, production of gas was checkedbased upon percentage of dry matter present in total solid content, and for two systems, namely wet system and dry system.

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