UV activated persulfate-sulfite for degradation of tribromophenol

UV activated persulfate-sulfite for degradation of tribromophenol

Constructing a chemical oxidation-reduction synchronous synergistic reaction system may have higher organic matter degradation efficiency compared to the separate operation of oxidation or reduction. By irradiating a mixed solution of sodium persulfate and sodium sulfite with a ultraviolet light (UV...

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Bibliographic Details
Main Authors: YANG Bo, XU Miaoling, CHEN Huihuang, YANG Mengting
Format: Article
Language:English
Published: Science Press (China Science Publishing & Media Ltd.) 2023-07-01
Series:Shenzhen Daxue xuebao. Ligong ban
Subjects:
water pollution control chemistry
oxidation-reduction synergistic effect
halogenated organic pollutants
sulfate radical
sulfite radical
tribromophenol
deep degradation of pollutants
Online Access:https://journal.szu.edu.cn/en/#/digest?ArticleID=2527
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Summary:Constructing a chemical oxidation-reduction synchronous synergistic reaction system may have higher organic matter degradation efficiency compared to the separate operation of oxidation or reduction. By irradiating a mixed solution of sodium persulfate and sodium sulfite with a ultraviolet light (UV), we construct a redox synchronous reaction system for the deep degradation of typical halogenated organic pollutant tribromophenol (TBP), and optimize the main influencing factors of the synergistic reaction system, and then analyze the concerned mechanism. The results show that the new UV-sodium persulfate-sodium sulfite redox system has stronger degradation and debromination efficiency than those of the single UV irradiation, UV-sodium persulfate oxidation system, and UV-sodium sulfite reduction system. In the neutral reaction system with Sodium persulfate and Sodium sulfite dosage of 1.0 mmol/L and pH = 7.0, the removal rate of TBP at 5.0 mg/L within 1 hour is over 99.9% and the debromination rate is 83.9%. The free radical detection results further verifies the significant coexistence mechanism of redox effect in the reaction system. This study provides a new degradation method and technical ideas for the deep removal of typical halogenated new pollutants.
ISSN:1000-2618

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