@article{scholars3007,
           title = {Optimization of biomethane production by anaerobic digestion of palm oil mill effluent using response surface methodology},
            note = {cited By 26},
          volume = {7},
          number = {3},
             doi = {10.1002/apj.550},
         journal = {Asia-Pacific Journal of Chemical Engineering},
           pages = {353--360},
            year = {2012},
          author = {Saleh, A. F. and Kamarudin, E. and Yaacob, A. B. and Yussof, A. W. and Abdullah, M. A.},
            issn = {19322135},
        abstract = {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{\^A}oC 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. {\^A}{\copyright} 2011 Curtin University of Technology and John Wiley \& Sons, Ltd.},
             url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84862842245&doi=10.1002\%2fapj.550&partnerID=40&md5=a14565e95aa7f4ac0268ef5077d3e1ef},
        keywords = {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}
}