Abstract
To treat the problem of fossil fuel usage and greenhouse gas emissions, biogas is considered a potential source of clean renewable energy. The aim of the work is to analyze the amount of biogas and ph from cow dung when an anaerobic digester operates in the mesophilic mode. In this study is presented the experimental investigation of biogas production from cow dung as an alternative energy resource. This is work using an 18 Liters capacity plastic as prototype biogas plant, plant to inspect the anaerobic digestion in producing biogas. The digester was batch operated and daily gas produced from the plant was observed for 30 days. The digester was fed within the ratio of 1:1 of dung to water respectively. The operating temperatures of the digester were maintained within mesophilic conditions. The Biogas production from cow dung fluctuates from the first day to the thirtieth day between 0 and 340 ml. The pH of cow dung is gradual reduction within the retention period.
Highlights
Due to the population growth and the industrial development, world energy consumption considerably increases in the last decades
The increased energy consumption based on fossil fuels affects our environment through the greater amounts of greenhouse gas emissions, the environmental pollution of water, air and soil, and the climate changes, which dramatically influence the quality of life and the health of people
At day 13, the biogas produced was 160 ml in which decreases back to 45 ml on the day and increases thereafter until it reached the peak on day 22 with 340 ml biogas production after which it begins to reduce till the completion of the retention period
Summary
Due to the population growth and the industrial development, world energy consumption considerably increases in the last decades. Fossil fuels are not renewable energies, further, they are highly polluting, and their production tends to decrease during the few decades [1]. Biogas, produced by anaerobic digestion of wastewater, organic waste, agricultural waste, industrial waste, and animal by-products is a potential source of renewable energy [3]. Anaerobic digestion is a series of biological process in which microorganism breaks down biodegradable material in the absence of oxygen. It is a step by step process where the organic carbon is mainly converted to carbon dioxide and methane. The gases methane, hydrogen, and carbon monoxide can be combusted or oxidized with oxygen This energy release allows biogas to be used as a fuel [5].
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