Highly effective oxidation of roxarsone by ferrate and simultaneous arsenic removal with in situ formed ferric nanoparticles
Copyright © 2018 Elsevier Ltd. All rights reserved..
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 AsC 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.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2018 |
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| Erschienen: |
2018 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:147 |
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| Enthalten in: |
Water research - 147(2018) vom: 15. Dez., Seite 321-330 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Yang, Tao [VerfasserIn] |
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| Links: |
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| Themen: |
16836-06-9 |
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| Anmerkungen: |
Date Completed 24.09.2019 Date Revised 25.09.2019 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1016/j.watres.2018.10.012 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM289519004 |
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| 245 | 1 | 0 | |a Highly effective oxidation of roxarsone by ferrate and simultaneous arsenic removal with in situ formed ferric nanoparticles |
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| 520 | |a Copyright © 2018 Elsevier Ltd. All rights reserved. | ||
| 520 | |a 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 AsC 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 | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Research Support, Non-U.S. Gov't | |
| 650 | 4 | |a Arsenic(III) | |
| 650 | 4 | |a Arsenic(V) | |
| 650 | 4 | |a Ferrate | |
| 650 | 4 | |a Ferric nanoparticles | |
| 650 | 4 | |a Roxarsone | |
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| 700 | 1 | |a Liu, Yulei |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Lu |e verfasserin |4 aut | |
| 700 | 1 | |a Jiang, Jin |e verfasserin |4 aut | |
| 700 | 1 | |a Huang, Zhuangsong |e verfasserin |4 aut | |
| 700 | 1 | |a Pang, Su-Yan |e verfasserin |4 aut | |
| 700 | 1 | |a Cheng, Haijun |e verfasserin |4 aut | |
| 700 | 1 | |a Gao, Dawen |e verfasserin |4 aut | |
| 700 | 1 | |a Ma, Jun |e verfasserin |4 aut | |
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