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5063319 
Journal Article 
Natural Fe-bearing manganese ore facilitating bioelectro-activation of peroxymonosulfate for bisphenol A oxidation 
Yan, S; Zhang, X; Shi, Yue; Zhang, Hui 
2018 
Yes 
Chemical Engineering Journal
ISSN: 1385-8947 
354 
1120-1131 
English 
WOS:000445413900108 
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. 
Fe-bearing manganese ore; Peroxymonosulfate activation; Bioelectricity; Radical oxidation; Non-radical reaction