标题：Natural Fe-bearing manganese ore facilitating bioelectro-activation of peroxymonosulfate for bisphenol A oxidation
作者：Yan, SD (Yan, Suding); Zhang, XP (Zhang, Xinping); Shi, Y (Shi, Yue); Zhang, H (Zhang, Hui) 来源出版物：CHEMICAL ENGINEERING JOURNAL 卷：354 页码: 1120-1131 DOI：10.1016/j.cej.2018.08.066 出版年：DEC 15 2018
摘要： The natural Fe-bearing manganese ore (FMO) and bioelectricity supplied by a single-chamber microbial fuel cell (MFC) were employed to construct the peroxymonosulfate (PMS) activation system (FMO/MFC/PMS) for the degradation of bisphenol A (BPA). The FMO was characterized by X-ray fluorescence (XRF), X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, Brunauer-Emmett-Teller (BET), field-emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM). The results show that epsilon-MnO2 and alpha-Fe2O3 were the active components of the natural FMO and they could greatly facilitate the bioelectro-activation of PMS for the oxidation of BPA. When FMO dosage, PMS concentration and current density were set as 0.5 g L-1, 10 mM and 100 mA m(-2), respectively, 97.8% of BPA degradation could be achieved at natural pH of BPA solution after 80 min reaction and about 80% of TOC could be removed when the reaction time was prolonged to 120 min. Based on the electron paramagnetic resonance result, scavenging tests, fluorescence spectra experiment and X-ray photoelectron spectroscopy analysis, both radical oxidation (sulfate and hydroxyl radical) and non-radical reactions (such as singlet oxygen and direct electron transfer) were considered to be responsible for BPA removal. The FMO exhibited good stability and could be recycled at least 3 runs without any additional special treatment. 10 mM of Cl-and HCO3- could suppress the degradation of BPA while 10 mM of NO3- showed negligible effects on BPA removal. The FMO/MFC/PMS process could be applied in natural water without the decrease of BPA removal.
作者关键词：Fe-bearing manganese ore; Peroxymonosulfate activation; Bioelectricity; Radical oxidation; Non-radical reaction
通讯作者地址：Zhang, H (reprint author), Wuhan Univ, Dept Environm Sci & Engn, POB C319,Luoyu Rd 129, Wuhan 430079, Hubei, Peoples R China.
地址： [Yan, Suding; Zhang, Hui] Wuhan Univ, Dept Environm Sci & Engn, Hubei Environm Remediat Mat Engn Technol Res Ctr, Wuhan 430079, Hubei, Peoples R China.
[Yan, Suding; Zhang, Xinping; Shi, Yue] Hubei Normal Univ, Dept Environm Engn, Hubei Key Lab Pollutant Anal & Reuse Technol, Huangshi 435002, Peoples R China.
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