UV Photolysis of Several Conventional Pharmaceuticals: Degradability and Products
O. E. LEBEDEVA1, A. A. SOLOVYEVA1, M. N. USTINOVA1, A. S. BUCHELNIKOV2,3
1Belgorod State National Research University, Belgorod, Russia
2Sevastopol State University, Sevastopol, Russia
3A. O. Kovalevsky Institute of Biology of the Southern Seas, Russian Academy of Science, Sevastopol, Russia
Keywords: micropollutants, pharmaceuticals, UV photolysis, high-pressure mercury lamp, wastewater treatment, NMR spectroscopy
Pages: 51-59
Abstract
Direct UV photolysis of the aqueous solutions of seven well-known pharmaceuticals was accomplished using a high-pressure mercury lamp. Within 30 min of irradiation, active substances of ranitidine and phthalylsulphathiazole were almost completely destructed, whereas paracetamol and novocaine were destroyed to a lesser extent. Stable organic products are not formed during the destruction of paracetamol, while the photolysis of sulphaguanidine leads to the formation of acetic acid, which was confirmed by means of 1H NMR spectroscopy. It is concluded that UV photolysis may be used for initial wastewater treatment to remove the studied micropollutants.
DOI: 10.15372/CSD2021277
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