Said, M., Abbad, M. ba, Sheik Abdullah, S.R. and Mohammad, A.W. 2019. Box Behken design for optimization of COD removal from Palm oil mill effluent (POME) using Reverse osmosis (RO) membrane. Indonesian Journal of Environmental Management and Sustainability. 3, 1 (Mar. 2019), 39-46. DOI:https://doi.org/10.26554/ijems.2019.3.4.39-46.