Mistral’s Biogas Plant is a showcase of how biogas renewable energy can be harnessed sustainably from palm oil mills in Malaysia.
The Biogas Plant employs an efficient biogas digester system based on thermophilic digestion, which harnesses methane generated during anaerobic digestion of POME. The system involves primary and secondary digester tanks with flexible membrane roofs for controlled thermophilic digestion.
The captured biogas or methane is utilised for power generation in gas engines. Biogas that cannot be utilized for energy production is flared in a closed flare system. Treated wastewater from the Biogas Plant undergoes further treatment in an effluent polishing plant and the sludge is then used for soil application.
The production process of biogas contributes to Greenhouse Gas emission reductions via:
Recovery of the methane gas generated from decomposing organic matters (or anaerobic digestion process involving microorganisms called anaerobe) instead of being emitted to cause harm to the atmosphere.
Usage of the recovered methane gas for renewable electricity and heat generation.
The Biogas Plant:
Introduces an efficient and controlled treatment of agriculture waste in contrast to the open lagoon system.
Minimises risk of POME flooding and leakage into waterways.
Reduces atmospheric emissions of methane gas and strong odours as the gasses are captured.
Capturing and utilising the biogas is in line with the Malaysian Government’s policy to intensify the development of Renewable Energy as the fifth fuel resource under the country’s Fuel Diversification Policy, as stipulated in the objectives of the Third Outline Perspective Plan for 2001-2010 (OPP3) and the Tenth Malaysian Plan.