20.500.12556/RUL-137534 Combined analytical study on chemical transformations and detoxification of model phenolic pollutants during various advanced oxidation treatment processes Advanced oxidation processes (AOPs) have been introduced to deal with different types of water pollution. They cause effective chemical destruction of pollutants, yet leading to a mixture of transformation by-products, rather than complete mineralization. Therefore, the aim of our study was to understand complex degradation processes induced by different AOPs from chemical and ecotoxicological point of view. Phenol, 2,4-dichlorophenol, and pentachlorophenol were used as model pollutants since they are still common industrial chemicals and thus encountered in the aquatic environment. A comprehensive study of efficiency of several AOPs was undertaken by using instrumental analyses along with ecotoxicological assessment. Four approaches were compared: ozonation, photocatalytic oxidation with immobilized nitrogen-doped TiO$_2$ thin films, the sequence of both, as well as electrooxidation on boron-doped diamond (BDD) and mixed metal oxide (MMO) anodes. The monitored parameters were: removal of target phenols, dechlorination, transformation products, and ecotoxicological impact. Therefore, HPLC–DAD, GC–MS, UHPLC–MS/MS, ion chromatography, and 48 h inhibition tests on Daphnia magna were applied. In addition, pH and total organic carbon (TOC) were measured. Results show that ozonation provides by far the most suitable pattern of degradation accompanied by rapid detoxification. In contrast, photocatalysis was found to be slow and mild, marked by the accumulation of aromatic products. Preozonation reinforces the photocatalytic process. Regarding the electrooxidations, BDD is more effective than MMO, while the degradation pattern and transformation products formed depend on supporting electrolyte. chlorophenols phenol electrooxidation ozonation photocatalysis photooxidation gas chromatography liquid chromatography ion chromatography mass spectrometry total organic carbon ecotoxicology Daphnia magna klorofenoli fenol elektroksidacija ozonacija fotokataliza fotooksidacija plinska kromatografija tekočinska kromatografija ionska kromatografija masna spektrometrija celokupni organski ogljik ekotoksikologija Daphnia magna true false true Angleški jezik Slovenski jezik Članek v reviji 2022-06-21 09:57:23 2022-06-21 09:57:25 2022-09-15 04:15:21 0000-00-00 00:00:00 2022 0 0 20 str. iss. 6, art. 1935 Vol. 27 Mar. 2022 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 628.349:66.094.3:543.544 1420-3049 10.3390/molecules27061935 101261315 molecules-27-01935-v2.pdf molecules-27-01935-v2.pdf 1 11EE6C4F098A640A287AB377B97FCF20 3971495eaab658f269ba80c15721366bf20c13ceeab36d8b0d2920373a0b40f9 d9028511-f137-11ec-8aca-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=157514 https://www.mdpi.com/1420-3049/27/6/1935 1 9a87ece0-f137-11ec-8aca-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=157513 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0