Adsorption of colour, TSS and COD from palm oil mill effluent (POME) using acid-washed coconut shell activated carbon: Kinetic and mechanism studiesYong Yin Sia, Ivy Ai Wei Tan and Mohammad Omar AbdullahMATEC Web Conf., 87 (2017) 03010DOI: https://doi.org/10.1051/matecconf/20178703010