Effects of Activation Methods on Spent Bleaching Earth for Palm Oil Mill Effluent Treatment

Physical refining of crude palm oil includes three major stages: degumming, bleaching and deodourisation. Bleaching earth is used for the removal of undesirable components such as phospholipids, colorants and traces of heavy metals contained in crude oil (Sabah et al., 2007). Regeneration of spent bleaching earth can be achieved by heat treatment (Mahramanlioglu et al., […]