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A Technical and Economic Analysis of Heat and Power Generation from Biomethanation of Palm Oil

By Mill Effluent and B. G. Yeoh


Palm oil mill effluent (POME) has been identified as one of the major sources of aquatic pollution in Malaysia. due to its high strength and economic importance. With more than 330 palm oil mills in operation, Malaysia produces some 10.6 million tonnes of crude palm oil annually, accounting for 52 % of the total world production, and concomitantly generates some 27 x 10 6 m 3 POME. To meet with the regulatory requirement, more than 85 % of the mills use solely lagoon systems in wastewater treatment, typically anaerobic first stage followed by facultative treatment. Research data associated with this study revealed that methane yield ranging from 0.47 to 0.92 m 3 kg-1-BODadded was attainable in the biomethanation of POME for reaction temperature of between 35 to 55ºC. Considering the associated socio-environmental impact, an analysis of the research data indicates that about 375 x 10 6 m 3, or 225 Gg of CH4 is evolved from open ponding systems used in POME treatment, accounting for 10 % of the CH4 inventory in Malaysia. In terms of greenhouse gas effect, this source amounts to 5,170 Gg in CO2 equivalent, or 3.6 % of the estimated total emissions i

Year: 2011
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