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Open AccessArticle

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

by 1,2, 1,2,*, 1,2, 3, 3, 1,2 and 1,2,*
1
Guangdong 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, China
2
School of Environment, South China Normal University, University Town, Guangzhou 510006, China
3
Agile Environmental Protection Group, Yulin Xintao Environmental Protection Technology Co., Ltd., Yulin 537000, China
*
Authors to whom correspondence should be addressed.
Academic Editor: Naresh Singhal
Water 2021, 13(7), 968; https://doi.org/10.3390/w13070968
Received: 23 February 2021 / Revised: 29 March 2021 / Accepted: 29 March 2021 / Published: 31 March 2021
(This article belongs to the Section Wastewater Treatment and Reuse)
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 Fe3O4 nanoparticles and, thus, enhance the exposure of Fe reaction sites for catalytic reaction with H2O2. 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 (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, NO3, SO42−, and humic acid) were investigated. The results showed that SO42− 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. View Full-Text
Keywords: magnetic anion exchange resin (MAER); UV–Fenton; reactive brilliant red; textile dyeing wastewater magnetic anion exchange resin (MAER); UV–Fenton; reactive brilliant red; textile dyeing wastewater
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MDPI and ACS Style

Zhong, J.; Yang, B.; Feng, Y.; Chen, Y.; Wang, L.-G.; You, W.-D.; Ying, G.-G. Enhanced Photo–Fenton Removal Efficiency with Core-Shell Magnetic Resin Catalyst for Textile Dyeing Wastewater Treatment. Water 2021, 13, 968. https://doi.org/10.3390/w13070968

AMA Style

Zhong J, Yang B, Feng Y, Chen Y, Wang L-G, You W-D, Ying G-G. Enhanced Photo–Fenton Removal Efficiency with Core-Shell Magnetic Resin Catalyst for Textile Dyeing Wastewater Treatment. Water. 2021; 13(7):968. https://doi.org/10.3390/w13070968

Chicago/Turabian Style

Zhong, Jie; Yang, Bin; Feng, Yong; Chen, Yang; Wang, Li-Gao; You, Wen-Dan; Ying, Guang-Guo. 2021. "Enhanced Photo–Fenton Removal Efficiency with Core-Shell Magnetic Resin Catalyst for Textile Dyeing Wastewater Treatment" Water 13, no. 7: 968. https://doi.org/10.3390/w13070968

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