Yong, G.T.X. and Chan, Y.J. and Lau, P.L. and Ethiraj, B. and Ghfar, A.A. and Mohammed, A.A.A. and Shahid, M.K. and Lim, J.W. (2023) Optimization of the Performances of Palm Oil Mill Effluent (POME)-Based Biogas Plants Using Comparative Analysis and Response Surface Methodology. Processes, 11 (6).