Enhanced Photo–Fenton Removal Efficiency with Core-Shell Magnetic Resin Catalyst for Textile Dyeing Wastewater Treatment

Heterogeneous photo–Fenton reactions have been regarded as important technologies for the treatment of textile dyeing wastewaters. In this work, an efficient core-shell magnetic anion exchange resin (MAER) was prepared through in situ polymerization and used to remove reactive brilliant red (X-3B) a UV–Fenton system. The MAER exhibited satisfactory removal efficiency X-3B because its highly effective catalytic activity. More than 99% (50 mg/L) removed within 20 min reaction. This is uniformly dispersed microsphere could suppress aggregation Fe3O4 nanoparticles and, thus, enhance exposure Fe reaction sites with H2O2. good adsorption capacity also played role promoting contact between radicals during Mechanism research showed that hydroxyl radical (•OH) main can be easily separated by magnet after reactions. Moreover, matrix effects different substrates (Cl?, NO3?, SO42?, humic acid) were investigated. results SO42? beneficial improve but others decrease removal. significant amounts total organic carbon (TOC) solution actual industrial wastewater. heterogeneous oxidation system established work may suggest prospects practical applications