Co-digestion studies of saleable glycerin with palm oil mill effluent and poultry manure

Wei Ling Chow, Yi Jing Chan, Mei Fong Chong, Phaik Eong Poh

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5 Citations (Scopus)


The oversupply of glycerin as by-product from biodiesel industry has raised price crisis. However, the high nitrogen content of saleable glycerin (Gly) makes it a suitable co-substrate for anaerobic process. This study aims to evaluate the feasibility of anaerobic co-digestion (ACD) of Gly with two separate primary substrates namely palm oil mill effluent (POME) and poultry manure (PM). The study disclosed that the ACD of POME:Gly is best at ratio 1.6:0.4 with highest biogas production (Fgas) of 6.49 L/day and chemical oxygen demand (COD) removal of 96 while PM:Gly is ideal at ratio 0.6:1.4 with Fgas of 6.89 L/day and volatile solids (VS) removal of 94 .
Original languageEnglish
Pages (from-to)17 - 26
Number of pages10
JournalJournal of Engineering Science and Technology
Issue numberSpecial 8
Publication statusPublished - 2015

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