Russian scientists have developed a polymer membrane that can remove up to 95% of pollutants from used engine oil.
Membrane filtration will help reduce the need for the production of motor oils from fossil oil, thereby saving energy and raw materials, supporting a circular economy.
The membranes are made of polyacrylonitrile, an inexpensive polymer. Its mixture is applied to glass, an organic solvent is added to it, and then it is all immersed in distilled water. This produces a film whose pores have a diameter of 4 to 35 nanometers. Their permeability can be adjusted.
Russian scientists from the Institute of Petrochemical Synthesis of the Russian Academy of Sciences have selected the optimal conditions for the production of membranes, which makes it possible to create highly efficient and reusable filters for the primary cleaning of motor oils. The membranes can be reused by simply washing off the contaminated substances.
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