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) i...
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MDPI AG
2021-03-01
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| author | Jie Zhong Bin Yang Yong Feng Yang Chen Li-Gao Wang Wen-Dan You Guang-Guo Ying |
| author_facet | Jie Zhong Bin Yang Yong Feng Yang Chen Li-Gao Wang Wen-Dan You Guang-Guo Ying |
| author_sort | Jie Zhong |
| collection | DOAJ |
| description | 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) in a UV–Fenton system. The MAER exhibited satisfactory removal efficiency for X-3B because of its highly effective catalytic activity. More than 99% of the X-3B (50 mg/L) was removed within 20 min in the UV–Fenton reaction. This is because the uniformly dispersed core-shell magnetic microsphere resin could suppress the aggregation of Fe<sub>3</sub>O<sub>4</sub> nanoparticles and, thus, enhance the exposure of Fe reaction sites for catalytic reaction with H<sub>2</sub>O<sub>2</sub>. The good adsorption capacity of MAER also played an important role in promoting contact between X-3B and reactive radicals during the reaction. Mechanism research showed that hydroxyl radical (<sup>•</sup>OH) was the main reactive radicals for the removal of X-3B in the MAER UV–Fenton system. The MAER can be easily separated by a magnet after catalytic reactions. Moreover, the matrix effects of different substrates (Cl<sup>−</sup>, NO<sub>3</sub><sup>−</sup>, SO<sub>4</sub><sup>2−</sup>, and humic acid) were investigated. The results showed that SO<sub>4</sub><sup>2−</sup> could be beneficial to improve the removal of X-3B but that the others decrease the removal. The MAER UV–Fenton also removed significant amounts of total organic carbon (TOC) for the X-3B solution and an actual textile dyeing industrial wastewater. The heterogeneous oxidation system established in this work may suggest prospects for practical applications in the treatment of textile dyeing wastewater. |
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| series | Water |
| spelling | doaj.art-01e4511a15e84484bdf261e49fe1ac932023-11-21T13:39:49ZengMDPI AGWater2073-44412021-03-0113796810.3390/w13070968Enhanced Photo–Fenton Removal Efficiency with Core-Shell Magnetic Resin Catalyst for Textile Dyeing Wastewater TreatmentJie Zhong0Bin Yang1Yong Feng2Yang Chen3Li-Gao Wang4Wen-Dan You5Guang-Guo Ying6Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, SCNU Environmental Research Institute, South China Normal University, Guangzhou 510006, ChinaGuangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, SCNU Environmental Research Institute, South China Normal University, Guangzhou 510006, ChinaGuangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, SCNU Environmental Research Institute, South China Normal University, Guangzhou 510006, ChinaAgile Environmental Protection Group, Yulin Xintao Environmental Protection Technology Co., Ltd., Yulin 537000, ChinaAgile Environmental Protection Group, Yulin Xintao Environmental Protection Technology Co., Ltd., Yulin 537000, ChinaGuangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, SCNU Environmental Research Institute, South China Normal University, Guangzhou 510006, ChinaGuangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, SCNU Environmental Research Institute, South China Normal University, Guangzhou 510006, ChinaHeterogeneous 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) in a UV–Fenton system. The MAER exhibited satisfactory removal efficiency for X-3B because of its highly effective catalytic activity. More than 99% of the X-3B (50 mg/L) was removed within 20 min in the UV–Fenton reaction. This is because the uniformly dispersed core-shell magnetic microsphere resin could suppress the aggregation of Fe<sub>3</sub>O<sub>4</sub> nanoparticles and, thus, enhance the exposure of Fe reaction sites for catalytic reaction with H<sub>2</sub>O<sub>2</sub>. The good adsorption capacity of MAER also played an important role in promoting contact between X-3B and reactive radicals during the reaction. Mechanism research showed that hydroxyl radical (<sup>•</sup>OH) was the main reactive radicals for the removal of X-3B in the MAER UV–Fenton system. The MAER can be easily separated by a magnet after catalytic reactions. Moreover, the matrix effects of different substrates (Cl<sup>−</sup>, NO<sub>3</sub><sup>−</sup>, SO<sub>4</sub><sup>2−</sup>, and humic acid) were investigated. The results showed that SO<sub>4</sub><sup>2−</sup> could be beneficial to improve the removal of X-3B but that the others decrease the removal. The MAER UV–Fenton also removed significant amounts of total organic carbon (TOC) for the X-3B solution and an actual textile dyeing industrial wastewater. The heterogeneous oxidation system established in this work may suggest prospects for practical applications in the treatment of textile dyeing wastewater.https://www.mdpi.com/2073-4441/13/7/968magnetic anion exchange resin (MAER)UV–Fentonreactive brilliant redtextile dyeing wastewater |
| spellingShingle | Jie Zhong Bin Yang Yong Feng Yang Chen Li-Gao Wang Wen-Dan You Guang-Guo Ying Enhanced Photo–Fenton Removal Efficiency with Core-Shell Magnetic Resin Catalyst for Textile Dyeing Wastewater Treatment Water magnetic anion exchange resin (MAER) UV–Fenton reactive brilliant red textile dyeing wastewater |
| title | Enhanced Photo–Fenton Removal Efficiency with Core-Shell Magnetic Resin Catalyst for Textile Dyeing Wastewater Treatment |
| title_full | Enhanced Photo–Fenton Removal Efficiency with Core-Shell Magnetic Resin Catalyst for Textile Dyeing Wastewater Treatment |
| title_fullStr | Enhanced Photo–Fenton Removal Efficiency with Core-Shell Magnetic Resin Catalyst for Textile Dyeing Wastewater Treatment |
| title_full_unstemmed | Enhanced Photo–Fenton Removal Efficiency with Core-Shell Magnetic Resin Catalyst for Textile Dyeing Wastewater Treatment |
| title_short | Enhanced Photo–Fenton Removal Efficiency with Core-Shell Magnetic Resin Catalyst for Textile Dyeing Wastewater Treatment |
| title_sort | enhanced photo fenton removal efficiency with core shell magnetic resin catalyst for textile dyeing wastewater treatment |
| topic | magnetic anion exchange resin (MAER) UV–Fenton reactive brilliant red textile dyeing wastewater |
| url | https://www.mdpi.com/2073-4441/13/7/968 |
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