Removal of decabromodiphenyl ether (BDE-209) by sepiolite-supported nanoscale zerovalent iron

被引：13

作者：

Fu, Rongbing ^{[1
,2
]}

Mu, Na ^{[1
]}

Guo, Xiaopin ^{[2
]}

Xu, Zhen ^{[2
]}

Bi, Dongsu ^{[1
]}

机构：

[1] Shanghai Inst Technol, Sch Chem & Environm Engn, Shanghai 201418, Peoples R China

[2] Shanghai Acad Environm Sci, Shanghai 200233, Peoples R China

来源：

FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING | 2015年 / 9卷 / 05期

关键词：

sepiolite-supported nanoscale zerovalent iron; decabromodiphenyl ether; debromination; adsorption; mechanism; POLYBROMINATED DIPHENYL ETHERS; ZERO-VALENT IRON; BIMETALLIC NANOPARTICLES; POLYCHLORINATED-BIPHENYLS; DIETARY EXPOSURE; SOUTH CHINA; DEBROMINATION; DEGRADATION; KINETICS; WATER;

D O I：

10.1007/s11783-015-0800-3

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Nanoscale zerovalent iron (nZVI) synthesized using sepiolite as a supporter was used to investigate the removal kinetics and mechanisms of decabromodiphenyl ether (BDE-209). BDE-209 was rapidly removed by the prepared sepiolite-supported nZVI with a reaction rate that was 5 times greater than that of the conventionally prepared nZVI because of its high surface area and reactivity. The degradation of BDE-209 occurred in a stepwise debromination manner, which followed pseudo-first-order kinetics. The removal efficiency of BDE-209 increased with increasing dosage of sepiolite-supported nZVI particles and decreasing pH, and the efficiency decreased with increasing initial BDE-209 concentrations. The presence of tetrahydrofuran (THF) as a cosolvent at certain volume fractions in water influenced the degradation rate of sepiolite-supported nZVI. Debromination pathways of BDE-209 with sepiolite-supported nZVI were proposed based on the identified reaction intermediates, which ranged from nona- to mono-brominated diphenylethers (BDEs) under acidic conditions and nonato penta-BDEs under alkaline conditions. Adsorption on sepiolite-supported nZVI particles also played a role in the removal of BDE-209. Our findings indicate that the particles have potential applications in removing environmental pollutants, such as halogenated organic contaminants.

引用

页码：867 / 878

页数：12

共 34 条

[1] Brominated dioxin-like compounds: in vitro assessment in comparison to classical dioxin-like compounds and other polyaromatic compounds [J].

Behnisch, PA ;

Hosoe, K ;

Sakai, S .

ENVIRONMENT INTERNATIONAL, 2003, 29 (06) :861-877

[2] Iron-nickel bimetallic nanoparticles for reductive degradation of azo dye Orange G in aqueous solution [J].

Bokare, Alok D. ;

Chikate, Rajeev C. ;

Rode, Chandrashekhar V. ;

Paknikar, Kishore M. .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2008, 79 (03) :270-278

[3] Effect of humic acid and metal ions on the debromination of BDE209 by nZVM prepared from steel pickling waste liquor [J].

Cai, Yuling ;

Liang, Bin ;

Fang, Zhanqiang ;

Xie, Yingying ;

Tsang, Eric Pokeung .

FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING, 2015, 9 (05) :879-887

[4] Hydrodechlorination of polychlorinated biphenyls in contaminated soil from an e-waste recycling area, using nanoscale zerovalent iron and Pd/Fe bimetallic nanoparticles [J].

Chen, Xi ;

Yao, Xiaoyan ;

Yu, Chunna ;

Su, Xiaomei ;

Shen, Chaofeng ;

Chen, Chen ;

Huang, Ronglang ;

Xu, Xinhua .

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH, 2014, 21 (07) :5201-5210

[5] Rapid reductive destruction of hazardous organic compounds by nanoscale Fe0 [J].

Choe, S ;

Lee, SH ;

Chang, YY ;

Hwang, KY ;

Khim, J .

CHEMOSPHERE, 2001, 42 (04) :367-372

[6] Polybrominated diphenyl ethers:: Occurrence, dietary exposure, and toxicology [J].

Darnerud, PO ;

Eriksen, GS ;

Jóhannesson, T ;

Larsen, PB ;

Viluksela, M .

ENVIRONMENTAL HEALTH PERSPECTIVES, 2001, 109 :49-68

[7] Degradation of the polybrominated diphenyl ethers by nanoscale zero-valent metallic particles prepared from steel pickling waste liquor [J].

Fang, Zhanqiang ;

Qiu, Xinhong ;

Chen, Jinhong ;

Qiu, Xiuqi .

DESALINATION, 2011, 267 (01) :34-41

[8] Debromination of polybrominated diphenyl ethers by Ni/Fe bimetallic nanoparticles: Influencing factors, kinetics, and mechanism [J].

Fang, Zhanqiang ;

Qiu, Xinhong ;

Chen, Jinhong ;

Qiu, Xiuqi .

JOURNAL OF HAZARDOUS MATERIALS, 2011, 185 (2-3) :958-969

[9] Degradation of bromamine acid by nanoscale zero-valent iron (nZVI) supported on sepiolite [J].

Fei, Xuening ;

Cao, Lingyun ;

Zhou, Lifeng ;

Gu, Yingchun ;

Wang, Xiaoyang .

WATER SCIENCE AND TECHNOLOGY, 2012, 66 (12) :2539-2545

[10] Anaerobic degradation of decabromodiphenyl ether [J].

Gerecke, AC ;

Hartmann, PC ;

Heeb, NV ;

Kohler, HPE ;

Giger, W ;

Schmid, P ;

Zennegg, M ;

Kohler, M .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2005, 39 (04) :1078-1083

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