Home – Home – Jornals – Chemistry for Sustainable Development 2019 number 6

The data on the effect of ozonation on the component composition and chemical properties of spent mineral engine oil are presented. It is shown that as a result of ozonolytic treatment, the relative content of aromatic and unsaturated compounds decreases in the composition of the waste oil, with an increase in the proportion of low-boiling components in the form of alkyl, alkyl ether and alicyclic structures. The content of aliphatic carboxylic acids, ethers and esters with linear and cyclic structure, lactones and anhydrides, which replenish the composition of resinous products, increases. The possibility of waste oil purification from mechanical impurities and resinous products by ozonation was revealed, and the optimal process conditions were determined, which correspond to ozone consumption of about 11 g/kg. The products of ozonation of the used engine oil - purified oil, resins, mineral deposits - can be reused in chemical, petrochemical and construction branches of industry as raw materials or their components.