Utilization of moringa oleifera seed as coagulant for pretreatment of palm oil mill effluent (POME) / Muhammad Danial Abd Majid ... [et al.]

This study aims to investigate the pretreatment process of palm oil mill effluent (POME) using Moringa oleifera seeds as natural coagulant to remove total suspended solid. Firstly, performance of two types of Moringa oleifera seeds; after oil extraction (MOAE) and without oil extraction (MO) was evaluated. From the data obtained, it gave the result of total suspended solid removal higher in usage of MOAE rather than MO. The sludge volume index (SVI) was also looked at to verify the tendency of sludge to become concentrated during the settling process. The study was followed by the identification of the best dosage as well as stirring speed. The maximum suspended solid removed 89.89% was obtained at conditions of 0.2 g/L and 150 rpm while its residual conductivity was successfully reduced to 2. 76%. This condition was found to be efficient and capable to increase the suspended solid removal of POME pretreatment