The combined use of coagulant and centrifuge for the complete removal of insoluble matter from used diesel engine sump oils (TR-DON-1)

Traditional methods for processing used detergent/dispersant type engine sump oils for re-use generally involve a complex and costly re-refining process. Carbon, products of oxidation, oil additives, fuel and water etc., are completely removed and the recovered base oil is "respiked" with the appropriate type and quantity of oil additives for...