©FIPO biotech  offers Management and treatment of wastewater with fatty acids metal oils neutralisation of free fatty acids in crude oil. See also saponification. SOAPY WATER .... industry form the basis of this guide on Water and Waste-water Management in the Edible Oil ... industrial treatment works have to treat the majority of this effluent.

https://www.youtube.com/watch?v=d4ptteVpQM0