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Received December 30, 2021
Accepted April 4, 2022
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
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Copyright © KIChE. All rights reserved.
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Degradation of sulphapyridine by Fe-Mn binary oxide-mediated radical reactions
Wuhu Engineering Technology Research Center of Environmental Monitoring and Control, Wuhu Institute of Technology, Wuhu 241003, China
Korean Journal of Chemical Engineering, October 2022, 39(10), 2685-2690(6), 10.1007/s11814-022-1139-7
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Abstract
Sewage containing antibiotics is harmful to the water environment. Here, a newly prepared iron manganese binary oxide (FMBO) activated persulfate (PDS) has excellent performance for the degradation of sulfapyridine (SPY) in an aqueous environment. The effects of initial pH, SPY, PDS concentration and FMBO dosage on the degradation ability of SPY were investigated. When the pH of FMBO/PDS was 4.0 and the initial concentration of PDS was 2.0mmol/L, the degradation ratio of SPY could reach 94.4%. In the system of removing organic pollutants by transition metal activated PDS, SO4 -? and ?OH radicals are generally generated, and ?OH radical plays a major role. Through the identification of SPY intermediate products by LC/MS, the degradation mechanism was explored. The degradation pathway showed that the strong oxidation of FMBO and the activity of PDS promoted the production of hydroxyl radical and contributed to the degradation and transformation of antibiotics. This study shows that FMBO/PDS has high degradation efficiency in the degradation of SPY.
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