Çifçi, Deniz IzlenGüneş, ElçinGüneş, Yalçin2024-10-292024-10-2920231582-9596https://doi.org/10.30638/eemj.2023.017https://hdl.handle.net/20.500.11776/12492In this study, the treatment of textile wastewater by adsorption, sulfate radical-based oxidation (UV/S2O8), and hydroxyl radical-based (UV/H2O2) oxidation methods was investigated. The effects of pH and Powdered Activated Carbon (PAC) dose on the adsorption process were assessed, and advanced oxidation processes by UV/S2O8and UV/H2O2in wastewater after the adsorption were also investigated. In addition, the treatment of textile wastewater by UV/S2O8and UV/H2O2oxidation processes as a single process was examined and optimum pH and oxidant dose were determined in these treatments. In the adsorption process, 81.3% Chemical Oxygen Demand (COD), 83.6% Total Organic Carbon (TOC) and 97.0% color removal were achieved at pH 5 and 20 g/L PAC dose. In addition, 98% COD and 94% TOC removal has been achieved with UV/S2O8or UV/H2O2oxidation processes after adsorption. While 76% COD removal can be achieved with UV/S2O8as a single process, COD removal can increase to 90% in the UV/H2O2oxidation as a single process. As a result, COD and TOC removal with UV/S2O8or UV/H2O2processes increased if applied after the adsorption process. According to the results of this study, these methods seem to be promising in terms of recycling and reuse of textile wastewater. However, there is a need to investigate the removal of other pollutants expresses as Total Dissolved Solids (TDS), or salts for water recovery and reuse. © 2023 Gheorghe Asachi Technical University of Iasi, Romania. All rights reserved.en10.30638/eemj.2023.017info:eu-repo/semantics/closedAccessadsorptionhydroxyl radicalskineticsulfate radicalstextile wastewaterArticle2221992082-s2.0-85171594389Q3