Investigation of UV/S2O8 2- and UV/VUV/ S2O8 2- processes on the degradation of trimethoprim

Farkas Luca and Szirmai Adrienn and Alapi Tünde: Investigation of UV/S2O8 2- and UV/VUV/ S2O8 2- processes on the degradation of trimethoprim.

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Abstract

Several environmental and public health problems are caused by toxic pharmaceuticals with biological activity released into the environment. Conventional biological water treatment methods are generally not effective enough to completely remove pharmaceuticals, especially antibiotics from waters, so advanced oxidation processes should be used as a complementary method. In this study, the removal efficiency of trimethoprim (TRIM) was investigated using UV (254 nm), UV/VUV (254/185 nm) photolysis, and UV/S2O8 2– and UV/VUV/S2O8 2– treatments. Opposite to the relatively high molar absorbance of TRIM at 254 nm, the simple UV photolysis was ineffective for its elimination. Its removal and mineralization were significant in the case of UV/VUV photolysis due to the •OH formation from water via absorption of 185 nm VUV light. The addition of S2O8 2– highly increased the transformation and mineralization rate in both cases due to the formation of SO4 . At the highest concentration of S2O8 2– , both UV and UV/VUV185nm photolysis removed the total TOC content within 45 minutes.

Item Type:	Conference or Workshop Item
Journal or Publication Title:	Proceedings of the International Symposium on Analytical and Environmental Problems
Date:	2021
Volume:	27
ISBN:	978-963-306-835-9
Page Range:	pp. 114-118
Language:	English
Publisher:	University of Szeged
Place of Publication:	Szeged
Event Title:	International Symposium on Analytical and Environmental Problems (27.) (2021) (Szeged)
Related URLs:	http://acta.bibl.u-szeged.hu/75798/
Uncontrolled Keywords:	Analitikai kémia
Additional Information:	Bibliogr.: 118. p. ; ill. ; összefoglalás angol nyelven
Subjects:	01. Natural sciences 01. Natural sciences > 01.04. Chemical sciences
Date Deposited:	2022. May. 30. 10:09
Last Modified:	2022. Aug. 08. 15:40
URI:	http://acta.bibl.u-szeged.hu/id/eprint/75939

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