Study of Biogas Production from Layer Chicken Manure by Modified Covered Lagoon Reactor

Abstract

This research was study the amount of biogas production from layer chicken manure in a large farm using the Modified Covered Lagoon Reactor (MCLR) biogas system. The MCLR biogas system is consisted of 1)Law material area, 2)Law water tank, 3)a 200 m³ raw material mixing tank, 4)a 4,000 m³ reactor, 5)4,000 m³ biogas balloon storage, 6)heating unit and 7)electrical generating station. The experimental found that the amount of biogas production was performed by the average of waste-water volume daily to be added into the biogas system was 550 m³/day. From the experiment, it was found that the average amount of biogas production was 10,234 m³/day and the average biogas production rate was 0.54 m³/kg-COD or 0.82 m³/kg-VS. The following parameters of the waste water were measured found that the average COD value influent and reactor were 38,474 and 7,458 mg/l, respectively. The average of VFA/Alk value in reactor was 0.20 and the COD reduction value is more than 60% that the biogas production system can be operating as well. The COD reduction was effect to the amount of biogas production. The composition of the biogas was CH₄, CO₂, and H₂S of 54.66%, 44.47%, and 3,774.92 ppm, respectively. In finally, this result of the biogas production rate from experimental can compare with the other substrates found that the biogas production rate from layer chicken manure is highest.