Igwe, Jude Chibuzo, C. O. Onyegbado, and Augustine Abia. 2010. “Adsorption Isotherm Studies of BOD, TSS and Colour Reduction from Palm Oil Mill Effluent (POME) Using Boiler Fly Ash”. Eclética Química 35 (3):195-208. https://doi.org/10.26850/1678-4618eqj.v35.3.2010.p195-208.