Purification of petroleum produced water by novel Afzelia africana extract via single angle nephelometry

Treatment of petroleum produced water (PPW) using jar test and novel Afzelia africana coagulant (AAC) has been investigated. AAC was a by-product of sequential ethanol-multiple salts oil extraction from the precursor seed. Process kinetics, statistical analyses and removal efficiency at varying PPW pH and AAC dosage were evaluated. Optimum treatment conditions were obtained at dosage of 100 mg/L, pH of 4, period of 59.5 s and rate constant of 2E − 05 m3/kg/s. Comparatively, at optimum, AAC and alum recorded 81.28% and 79.10% removal efficiencies, respectively. It could be concluded that AAC was relatively more effective for the treatment of PPW at the conditions of the experiment.