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 engine 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 everything is immersed in distilled water. This produces a film whose pores are 4 to 35 nanometers in diameter. 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 allows creating highly efficient and reusable filters for primary cleaning of engine oils. The membranes can be reused by simply washing off the contaminated substances.
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