Comparison Of Adsorption and Photocatalytic Removals Of Phenol, BOD5 and Some Cod Components From Olive Mill Effluents By Nano-ZnO-SiO2 Composites

Abstract

The nano ZnO-SiO₂ composites, synthesized under laboratory conditions, have been investigated for the adsorption of COD, phenol and total solids present in the olive mill wastewaters (OMW). ZnO/ SiO₂ nanoparticles were prepared by a simple physical synthesis route. The aim of this study is to determine the adsorption and photocatalysis of pollutants in the OMW by synthesized nano ZnO/ SiO₂ composite under laboratory conditions. The effects of  nano ZnO/SiO₂ composite concentration, adsorption and irradiation times, acidic, alkaline conditions on the adsorption and photocatalytic process were investigated in the OMW for the removal of pollutants