Optimization of Biogas Production from Kitchen Waste installed at College of Science and Technology

摘要

This paper presents an overview of the biogas plant and optimization of gas production installed near students’ dining room at College of Science and Technology (CST) located in the Southern foothills of Bhutan. The mixed kitchen waste produced is collected and directly feed to the biogas plant. This research is installed in collaboration with Department of Energy and College of Science and Technology as a pilot project with the aim "Waste-To-Energy Initiatives." It also aims to replace the use of Liquefied Petroleum Gas (LPG) in students’ mess kitchen. The detail studies of waste production and feasibility studies were carried out before installation of the plant. The maximum biogas production capacity of the plant is 4 m³ per day. As production of gas from the plant depends on type of waste and surrounding temperature, gas yield was not as per the design criteria. To improve the gas production, various methodologies where applied.