Generation of Biogas in Brunei Darussalam Mohd. Ibadatul Elmi Bin Hj Abdullah

A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in the Mechanical Engineering Programme Area of Universiti Teknologi Brunei.

Abstract

Generation of biogas in Brunei Darussalam has been successfully done throughout the period of time given. Therefore, the study conducted on different chicken to cow manure composition mix and feed into the anaerobic digester rigs. The result shows effective generation of biogas from mixing 70% cow manure and 30% chicken manure with cumulative gas yield of 36.7 litres and expected average gas yield per day of 2.45 /day and the biogas yield per kilogram of slurry of 2.04 l/kg was the highest record among all tested chicken to cow manure mixing ratio composition. But unfortunately due to limitation on gas detector device methane gas could not be detected although some other gas was detected. The affecting parameters also know with temperature in average of 27°C with a pH level closer to 7 is productive in biogas yield in 30-days retention. Due to the biogas generated could not be combust a filtration of gas was recommended to get a concentrated methane gas for future study on the calorific value of this biogas.