“…The resultant FOG is referred to as sewer grease (Fig. 1), or black grease since the sewer water is also called black water (Jolis et al, 2010;Ward, 2012), or primary clarifier skimmings or primary sludge (Mondala et al, 2009;Pokoo-Aikins et al, 2010;Siddiquee and Rohani, 2011). Sewer grease and trap grease are mostly sent to landfills.…”