Alkali-thermal activated persulfate treatment of tetrabromobisphenol A in soil : Parameter optimization, mechanism, degradation pathway and toxicity evaluation
Copyright © 2023 Elsevier B.V. All rights reserved..
The continued accumulation of halogenated organic pollutants in soil posed a potential threat to ecosystems and human health. In this study, tetrabromobisphenol A (TBBPA) was used as a typical representative of halogenated organic pollutants in soil, for alkali-thermal activated persulfate (PS) treatment. The results of response surface methodology (RSM) showed a optimal debromination efficiency of TBBPA was 88.99 % under the optimum reaction conditions. Quenching experiments and electron paramagnetic resonance (EPR) confirmed that SO4-•, HO•, O2-• and 1O2 existed simultaneously in the oxidation process. SO4-• played a major role in the initial stage of the reaction, and O2-• played a major role in the the last stage. Based on density functional theory (DFT) and intermediate products, two degradation pathways were proposed, including debromination reaction and β bond scission. Moreover, the basic physical and chemical properties of the soil were affected to a certain extent, while the soil surface structure, elements and functional group composition rarely changed. In addition, the T.E.S.T. analysis and biotoxicity tests proved that alkali-thermal activated PS can effectively reduce the toxicity of TBBPA-contaminated soil, which is conducive to the subsequent safe secondary utilization of soil.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2023 |
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| Erschienen: |
2023 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:903 |
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| Enthalten in: |
The Science of the total environment - 903(2023) vom: 10. Dez., Seite 166477 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Chen, Yushuang [VerfasserIn] |
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| Links: |
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| Themen: |
Advanced oxidation processes |
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| Anmerkungen: |
Date Revised 21.10.2023 published: Print-Electronic Citation Status Publisher |
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| doi: |
10.1016/j.scitotenv.2023.166477 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM361239130 |
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| 245 | 1 | 0 | |a Alkali-thermal activated persulfate treatment of tetrabromobisphenol A in soil |b Parameter optimization, mechanism, degradation pathway and toxicity evaluation |
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| 500 | |a Date Revised 21.10.2023 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status Publisher | ||
| 520 | |a Copyright © 2023 Elsevier B.V. All rights reserved. | ||
| 520 | |a The continued accumulation of halogenated organic pollutants in soil posed a potential threat to ecosystems and human health. In this study, tetrabromobisphenol A (TBBPA) was used as a typical representative of halogenated organic pollutants in soil, for alkali-thermal activated persulfate (PS) treatment. The results of response surface methodology (RSM) showed a optimal debromination efficiency of TBBPA was 88.99 % under the optimum reaction conditions. Quenching experiments and electron paramagnetic resonance (EPR) confirmed that SO4-•, HO•, O2-• and 1O2 existed simultaneously in the oxidation process. SO4-• played a major role in the initial stage of the reaction, and O2-• played a major role in the the last stage. Based on density functional theory (DFT) and intermediate products, two degradation pathways were proposed, including debromination reaction and β bond scission. Moreover, the basic physical and chemical properties of the soil were affected to a certain extent, while the soil surface structure, elements and functional group composition rarely changed. In addition, the T.E.S.T. analysis and biotoxicity tests proved that alkali-thermal activated PS can effectively reduce the toxicity of TBBPA-contaminated soil, which is conducive to the subsequent safe secondary utilization of soil | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Advanced oxidation processes | |
| 650 | 4 | |a Reactive oxygen species | |
| 650 | 4 | |a Soil remediation | |
| 650 | 4 | |a Tetrabromobisphenol A | |
| 650 | 4 | |a Toxicity | |
| 700 | 1 | |a Shi, Rui |e verfasserin |4 aut | |
| 700 | 1 | |a Hu, Yafei |e verfasserin |4 aut | |
| 700 | 1 | |a Xu, Wenlai |e verfasserin |4 aut | |
| 700 | 1 | |a Zhu, Neng-Min |e verfasserin |4 aut | |
| 700 | 1 | |a Xie, Haijiao |e verfasserin |4 aut | |
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