Degradation of the emerging brominated flame retardant tetrabromobisphenol S using organo-montmorillonite supported nanoscale zero-valent iron

被引：0

作者：

Qin C. ^{[1
]}

Wu J. ^{[2
]}

Lu X. ^{[3
]}

Gu C. ^{[5
]}

Guo Y. ^{[6
]}

Hu G. ^{[1
]}

Chen M. ^{[7
]}

Xia K. ^{[8
]}

Wang H. ^{[1
]}

Xie M. ^{[3
]}

机构：

[1] State Environmental Protection Key Laboratory of Monitoring and Analysis for Organic Pollutants in Surface Water, Jiangsu Environmental Monitoring Center, Nanjing

[2] Institute of Plant Protection, Beijing Academy of Agricultural and Forestry Sciences, Beijing

[3] Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering

[4] Technology, 219 Ningliu Road, Jiangsu, Nanjing

[5] Institute of Soil Science, Chinese Academy of Sciences, Nanjing

[6] State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Ministry of Ecology and Environment, Nanjing Institute of Environmental Sciences, Nanjing

[7] College of Science, Nanjing Agricultural University, Nanjing

[8] School of Plant and Environmental Sciences, Virginia Tech, Blacksburg, 24061, VA

来源：

Environmental Science and Pollution Research | 2024年 / 31卷 / 23期

基金：

中国国家自然科学基金;

关键词：

Brominated flame retardants; Degradation; Montmorillonite; Nanoscale zero-valent iron; Tetrabromobisphenol S;

D O I：

10.1007/s11356-024-33451-2

中图分类号：

学科分类号：

摘要：

The widespread occurrence of emerging brominated flame retardant tetrabromobisphenol S (TBBPS) has become a major environmental concern. In this study, a nanoscale zero-valent iron (nZVI) impregnated organic montmorillonite composite (nZVI-OMT) was successfully prepared and utilized to degrade TBBPS in aqueous solution. The results show that the nZVI-OMT composite was very stable and reusable as the nZVI was well dispersed on the organic montmorillonite. Organic montmorillonite clay layers provide a strong support, facilitate well dispersion of the nZVI chains, and accelerate the overall TBBPS transformation with a degradation rate constant 5.5 times higher than that of the original nZVI. Four major intermediates, including tribromobisphenol S (tri-BBPS), dibromobisphenol S (di-BBPS), bromobisphenol S (BBPS), and bisphenol S (BPS), were detected by high-resolution mass spectrometry (HRMS), indicating sequential reductive debromination of TBBPS mediated by nZVI-OMT. The effective elimination of acute ecotoxicity predicted by toxicity analysis also suggests that the debromination process is a safe and viable option for the treatment of TBBPS. Our results have shown for the first time that TBBPS can be rapidly degraded by an nZVI-OMT composite, expanding the potential use of clay-supported nZVI composites as an environmentally friendly material for wastewater treatment and groundwater remediation. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.

引用

页码：33547 / 33560

页数：13

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