Electrochemical synthesis of ferrate(VI) using sponge iron anode and oxidative transformations of antibiotic and pesticide
Sun, XH (Sun, Xuhui); Zu, KX (Zu, Kexin); Liang, H (Liang, He); Sun, L (Sun, Lin); Zhang, LY (Zhang, Lingyun); Wang, CY (Wang, Chuanyi); Sharma, VK (Sharma, Virender K.)
2018
发表期刊JOURNAL OF HAZARDOUS MATERIALS
卷号344期号:2页码:1155-1164
摘要

Passivation of anode is a main challenge in the electrochemical synthesis of ferrate(VI)((FeO42-)-O-VI, Fe(VI)). A series of electrochemical approaches were employed including polarization curve, cyclic voltammetry, and electrochemical impedance spectroscopy (EIS) to analyze the physicochemical processes involved in electrochemical synthesis of Fe(VI) using sponge iron and cast iron anodes. The results demonstrate that the sponge iron anode achieved higher yield of Fe(VI) compared to grey cast iron anode. The optimum condition to generate Fe(VI) using sponge iron was 35-50 degrees C and 30 mA/cm(2). Significantly, the sponge iron anode could generate Fe(VI) for a long duration (>10h) under these conditions; possibly suitable for large scale synthesis of Fe(VI). The prepared Fe(VI) solution was used to treat antibiotic (sulfamethoxazole (SMX)) and pesticide (atrazine (ATZ)) in water. At a molar ratio of Fe(VI) to SMX as 20:1 in the pH range from 5.0 to 9.0, almost complete oxidative transformation of SMX could be obtained. Comparatively, oxidative transformation of ATZ was incomplete (similar to 70%) even when [Fe(VI)]:[ATZ] = 87 at pH 5.0-9.0. Fluorescence spectra and cytotoxicity studies suggest that the oxidative transformation products of both SMX and ATZ possess lower toxicity than the parent antibiotic and pesticide, respectively.

关键词Sponge Iron Ferrate Polarization Sulfamethoxazole Atrazine
DOI10.1016/j.jhazmat.2017.08.081
收录类别SCI
WOS记录号WOS:000423246700115
引用统计
文献类型期刊论文
条目标识符http://ir.xjipc.cas.cn/handle/365002/5209
专题中国科学院特殊环境功能材料与器件重点试验室
作者单位1.Northeast Elect Power Univ, Chem Engn Coll, Jilin 132012, Jilin, Peoples R China
2.Jilin Univ, Chem Coll, Changchun 131001, Jilin, Peoples R China
3.Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Lab Environm Sci & Technol, Key Lab Funct Mat & Devices Special Environm, Urumqi 830011, Peoples R China
4.Texas A&M Univ, Program Environm & Sustainabil, Dept Environm & Occupat Hlth, Sch Publ Hlth, 1266 TAMU, College Stn, TX 77843 USA
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Sun, XH ,Zu, KX ,Liang, H ,et al. Electrochemical synthesis of ferrate(VI) using sponge iron anode and oxidative transformations of antibiotic and pesticide[J]. JOURNAL OF HAZARDOUS MATERIALS,2018,344(2):1155-1164.
APA Sun, XH .,Zu, KX .,Liang, H .,Sun, L .,Zhang, LY .,...&Sharma, VK .(2018).Electrochemical synthesis of ferrate(VI) using sponge iron anode and oxidative transformations of antibiotic and pesticide.JOURNAL OF HAZARDOUS MATERIALS,344(2),1155-1164.
MLA Sun, XH ,et al."Electrochemical synthesis of ferrate(VI) using sponge iron anode and oxidative transformations of antibiotic and pesticide".JOURNAL OF HAZARDOUS MATERIALS 344.2(2018):1155-1164.
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