biostudies-literatureUnknown233(4)da Luz VCThis study aimed to evaluate the implementation of an advanced oxidation system based on UV radiation and UV/H₂O₂ for degradation of TCS and IBU in synthetic effluent. The assays occurred in a 2-L reactor, protected from external light and equipped with a UV lamp (<i>λ</i> = 254 nm). The effect of contaminant concentration, fractions of chemical species present, and mineralization were evaluated. In the UV/ H₂O₂ system, different concentrations of H₂O₂ were studied for oxidation of the contaminants. The kinetic experiments took place between 75 and 270 min of UV irradiation. The results showed > 99% oxidation of TCS in the direct photolysis system at pH 9.4 after 12 min. The degradation of IBU in the UV/H₂O₂ system, when 10 mg L^-1 of H₂O₂ was used, was 97.39% oxidation. We obtained <i>k'</i> values of 0.189 min^-1 for TCS when its highest oxidation occurred and <i>k'</i> values of 0.0219 min^-1 for IBU. The system was not able to completely mineralize the contaminants, presenting high values of TOC and COD after treatment, thus suggesting the occurrence of phototransformation.<h4>Supplementary information</h4>The online version contains supplementary material available at 10.1007/s11270-022-05583-z.Water, air, and soil pollution126https://www.ebi.ac.uk/biostudies/studies/S-EPMC8975727biostudies-literatureEnhanced UV Direct Photolysis and UV/H₂O₂ for Oxidation of Triclosan and Ibuprofen in Synthetic Effluent: an Experimental Study.PMC8975727Dalla Rosa CBazoti SFPasquali GDLda Luz VCBehling LfalseEnhanced UV Direct Photolysis and UV/H₂O₂ for Oxidation of Triclosan and Ibuprofen in Synthetic Effluent: an Experimental Study.This study aimed to evaluate the implementation of an advanced oxidation system based on UV radiation and UV/H₂O₂ for degradation of TCS and IBU in synthetic effluent. The assays occurred in a 2-L reactor, protected from external light and equipped with a UV lamp (<i>λ</i> = 254 nm). The effect of contaminant concentration, fractions of chemical species present, and mineralization were evaluated. In the UV/ H₂O₂ system, different concentrations of H₂O₂ were studied for oxidation of the contaminants. The kinetic experiments took place between 75 and 270 min of UV irradiation. The results showed > 99% oxidation of TCS in the direct photolysis system at pH 9.4 after 12 min. The degradation of IBU in the UV/H₂O₂ system, when 10 mg L^-1 of H₂O₂ was used, was 97.39% oxidation. We obtained <i>k'</i> values of 0.189 min^-1 for TCS when its highest oxidation occurred and <i>k'</i> values of 0.0219 min^-1 for IBU. The system was not able to completely mineralize the contaminants, presenting high values of TOC and COD after treatment, thus suggesting the occurrence of phototransformation.<h4>Supplementary information</h4>The online version contains supplementary material available at 10.1007/s11270-022-05583-z.2022-01-01T00:00:00Z20222026-03-18T13:41:19.552Z2025-04-19T07:48:22.313ZS-EPMC89757273540076810.1007/s11270-022-05583-z