%0 Journal Article %@ 19322135 %A Saleh, A.F. %A Kamarudin, E. %A Yaacob, A.B. %A Yussof, A.W. %A Abdullah, M.A. %D 2012 %F scholars:3007 %J Asia-Pacific Journal of Chemical Engineering %K Anaerobic digestion process; Biogas production; Biomethane; Box-Behnken design; Co-substrate; Error percentage; Methane production; Methane Yield; Multiple response optimization; Oil palm empty fruit bunch; Operating temperature; Optimal conditions; Palm kernel; Palm oil mill effluents; Response surface methodology, Anaerobic digestion; Biogas; Carbon dioxide; Chemical oxygen demand; Methane; Optimization; Surface properties; Temperature; Vegetable oils, Substrates %N 3 %P 353-360 %R 10.1002/apj.550 %T Optimization of biomethane production by anaerobic digestion of palm oil mill effluent using response surface methodology %U https://khub.utp.edu.my/scholars/3007/ %V 7 %X This study investigated the effects of factors namely temperature, palm oil mill effluent (POME) volume, inoculum volume, and co-substrate addition such as oil palm empty fruit bunch (EFB) and palm kernel on the anaerobic digestion process for biogas and methane production. Response surface methodology by the Box-Behnken design verified that the specific biogas production rate and methane yield were mainly affected by operating temperature and co-substrate addition. The optimal conditions for the maximum specific biogas production rate (0.0574 m3/ kg chemical oxygen demand per day) and methane yield (25.6) have been predicted by multiple response optimization and verified experimentally at 47.8°C operating temperature, 50.4 mL POME volume, and 5.7 g EFB addition. The error percentage between experimental and predicted values which were around 5 for methane composition and 12 for specific biogas production rate suggests the good predictability of the model. © 2011 Curtin University of Technology and John Wiley & Sons, Ltd. %Z cited By 26