DOI: 10.1016/j.watres.2018.10.012
Scopus记录号: 2-s2.0-85054584040
论文题名: Highly effective oxidation of roxarsone by ferrate and simultaneous arsenic removal with in situ formed ferric nanoparticles
作者: Yang T. ; Liu Y. ; Wang L. ; Jiang J. ; Huang Z. ; Pang S.-Y. ; Cheng H. ; Gao D. ; Ma J.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 147 起始页码: 321
结束页码: 330
语种: 英语
英文关键词: Arsenic(III)
; Arsenic(V)
; Ferrate
; Ferric nanoparticles
; Roxarsone
英文摘要: Roxarsone (ROX) is used in breeding industry to prevent infection by parasites, stimulate livestock growth and improve pigmentation of livestock meat. After being released into environment, ROX could be bio-degraded with the formation of carcinogenic inorganic arsenic (As) species. Here, ferrate oxidation of ROX was reported, in which we studied total-As removal, determined reaction kinetics, identified oxidation products, and proposed a reaction mechanism. It was found that the apparent second-order rate constant (kapp) of ferrate with ROX was 305 M−1s−1 at pH 7.0, 25 °C, and over 95% of total As was removed within 10 min when ferrate/ROX molar ratio was 20:1. Species-specific rate constants analysis showed that HFeO4 − was the dominant species reacting with ROX. Ferrate initially attacked As–C bond of ROX and resulted in the formation of arsenate and 2-nitrohydroquinone. The arsenate was simultaneously removed by ferric nanoparticles formed in the reduction of ferrate, while 2-nitrohydroquinone was further oxidized into nitro-1,4-benzoquinone. These results suggest that ferrate treatment can be an effective method for the control of ROX in water treatment. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112379
Appears in Collections: 气候减缓与适应
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作者单位: State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin, 150090, China; Technology R & D Center for Environmental Engineering, Dongguan University of Technology, Dongguan, 523808, China; School of Municipal and Environmental Engineering, Jilin Jianzhu University, Changchun, 130118, China
Recommended Citation:
Yang T.,Liu Y.,Wang L.,et al. Highly effective oxidation of roxarsone by ferrate and simultaneous arsenic removal with in situ formed ferric nanoparticles[J]. Water Research,2018-01-01,147