a method for separating a more hydrophobic grease or oil contaminant from a less hydrophobic aqueous coolant / lubricant emulsion in which the contaminant has accumulated and in which it is itself emulsified . the contaminated coolant / lubricant is passed through a fluid pervious filtration media which has been infused with an absorption composition which is a homogeneous thermal reaction product of an oil component selected from the group consisting of glycerides , fatty acids , alkenes , and alkynes , and a methacrylate or acrylate polymer component . the contaminant is immobilized at the media and preferentially retained at the filter ; and the purified filtrate having passed through the filtration media is collected for further use .