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
Source PublicationJOURNAL OF HAZARDOUS MATERIALS
ISSN0304-3894
Volume344Issue:2Pages:1155-1164
Abstract

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.

KeywordSponge Iron Ferrate Polarization Sulfamethoxazole Atrazine
DOI10.1016/j.jhazmat.2017.08.081
Indexed BySCI
WOS IDWOS:000423246700115
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Document Type期刊论文
Identifierhttp://ir.xjipc.cas.cn/handle/365002/5209
Collection中国科学院特殊环境功能材料与器件重点试验室
Affiliation1.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
Recommended Citation
GB/T 7714
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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