Role of Photochemical Reactions in the Treatment of Water Used in the High-Tech Agriculture

Abstract

Recently, the lack of fresh water in the world led to the efficient use of technical water in many areas, including agriculture. Purification and efficient use of wastewater of various compositions helps to solve many problems. To this end, one of the main issues is the treatment of wastewater containing toxic substances of organic origin, especially phenolic compounds. In this case, the authors investigated the purification of phenol from wastewater using photochemical reactions. A photochemical reaction of a phenol solution in the presence of TiO2 nanoparticles 10–30 nm in size and crystalline ethyl 3, 3, 5, 5-tetracyano-2-hydroxy-2-methyl-4, 6-diphenylcyclohexane carboxylate (С26Н22N4O3) synthesized under mild conditions was carried out for the first time. The course of photochemical dissociation was confirmed by the difference in the absorption curves of the reaction product before and after the photolysis process, and the process was also monitored on a “Varian Cary 50.” The photochemical decomposition of phenol was 52%.