Application of UV-activated persulfate and peroxymonosulfate processes for the degradation of 1,2,3-trichlorobenzene in
- PDF / 1,114,294 Bytes
- 15 Pages / 595.276 x 790.866 pts Page_size
- 12 Downloads / 169 Views
MICROPOLLUTANTS AND MICROPLASTICS IN THE AQUATIC ENVIRONMENT
Application of UV-activated persulfate and peroxymonosulfate processes for the degradation of 1,2,3-trichlorobenzene in different water matrices Tajana Đurkić 1 & Jelena Molnar Jazić 1 Snežana Maletić 1 & Jasmina Agbaba 1
&
Malcolm Watson 1 & Bojan Bašić 2 & Miljana Prica 3 & Aleksandra Tubić 1 &
Received: 28 February 2020 / Accepted: 17 June 2020 # Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract The presence of a large number of micropollutants in the environment, including priority and emerging substances, poses a significant risk to surface and groundwater quality. Among them, trichlorobenzenes are widely used in the syntheses of dyes, pesticides, solvents, and other chemicals and have been identified as priority pollutants by the European Water Framework Directive. The main goal of this study was to investigate the behavior of 1,2,3-trichlorobenzene (TCB) during the sulfate radical–based advanced oxidation processes (SR-AOPs) involving UV activation of persulfate or peroxymonosulfate (UV/S2O82− and UV/HSO5− processes). For this purpose, TCB was subjected to SR-AOPs in synthetic water matrices containing humic acids or hydrogencarbonate and natural water samples and a comparative evaluation of the degradation process was made. The toxicity of the oxidation by-products was also assessed. The evaluation of TCB degradation kinetics results using principal component analysis indicates that the efficacy of the SR-AOPs was highly dependent on the pH, initial oxidant concentration, UV fluence, and matrix characteristics. In natural waters, TCB degradation by the UV/S2O82− process proved to be most effective in acidic conditions (pH 5), while the UV/HSO5− process showed the highest efficacy in basic conditions (pH 9.5), achieving a maximum TCB degradations of 97–99%. The obtained results indicate that UV/ S2O82− and UV/HSO5− as new generation oxidation processes have significant potential for TCB removal from water and result in only minor toxicity after treatment (14–23% of Vibrio fischeri bioluminescence inhibition). Keywords Micropollutants . 1,2,3-trichlorobenzene . Water treatment . SR-AOPs . Toxicity assessment . Predictive model
Introduction In recent years, the rapidly growing global population and economic development have resulted in serious adverse Responsible Editor: Vítor Pais Vilar * Jelena Molnar Jazić [email protected] 1
Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental Protection, University of Novi Sad, Trg Dositeja Obradovića 3, 21000, Novi Sad, Republic of Serbia
2
Faculty of Sciences, Department of Mathematics and Informatics, University of Novi Sad, Trg Dositeja Obradovića 4, 21000, Novi Sad, Republic of Serbia
3
Faculty of Technical Sciences, Graphic Engineering and Design, University of Novi Sad, Trg Dositeja Obradovića 6, 21000, Novi Sad, Republic of Serbia
environmental impacts, bringing priority and emerging micropollutants into increasing focus (Teodosiu et al. 2018
Data Loading...
