Selenate removal by Fe-0 coupled with ferrous iron, hydrogen peroxide, sulfidation, and weak magnetic field: A comparative study

doi:10.1016/j.watres.2019.05.037

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2011-2017年

	Selenate removal by Fe-0 coupled with ferrous iron, hydrogen peroxide, sulfidation, and weak magnetic field: A comparative study
	Fan, P ; Li, LN ; Sun, YK ; Qiao, JL ; Xu, CH ; Guan, XH
刊名	WATER RESEARCH
	2019
卷号	159 页码:375-384
关键词	ZERO-VALENT-IRON NANO ZEROVALENT IRON NITRATE REDUCTION SELENITE REMOVAL ELECTRON SELECTIVITY CORROSION PRODUCTS WATER REACTIVITY KINETICS ZVI
ISSN号	0043-1354
DOI	10.1016/j.watres.2019.05.037
文献子类	期刊论文
英文摘要	Dosing ferrous ions (ZVI/Fe2+), combining with oxidants (e.g., H2O2) (ZVI/H2O2), sulfidation treatment (S-ZVI), and introducing a weak magnetic field (ZVI/WMF) have been widely used to enhance the performance of zerovalent iron (ZVI) for reductive removal of contaminants. Taking Se(VI) as a probe contaminant, this study systematically compared the performances of different ZVI systems (i.e., ZVI/Fe2+, ZVI/H2O2, S-ZVI, and ZVI/WMF) for contaminant removal. All the four tested methods could greatly improve the performance of ZVI for Se(VI) removal. Se(VI) was removed by S-ZVI at S/Fe molar ratio of 0.05 with a much greater rate constant than other enhanced-ZVI technologies while the maximum amount of Se(VI) removal was obtained in ZVI/Fe2+ system with Fe2+ applied at 0.5 mM among the four tested enhanced-ZVI technologies at initial pH 6.0. In addition, Se(VI) removal by ZVI/Fe2+ was least influenced by initial pH compared to the other tested enhanced-ZVI systems, implying its good adaptability of pH. The application of these tested methods could significantly increase the electron efficiency from -0.5% to 4.06-8.72% and Fe2+ application was much more efficient in enhancing the electron efficiency than the other three methods. Finally, the perspective of these enhanced-ZVI technologies was compared in terms of their reactivity, selectivity, chemical cost, and pH adaptability and some suggestions for their possible application were provided. (C) 2019 Elsevier Ltd. All rights reserved.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/32196]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
作者单位	1.Tongji Univ, Coll Environm Sci & Engn, State Key Lab Pollut Control & Resources Reuse, Shanghai 200092, Peoples R China; 2.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 200092, Peoples R China; 3.Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China; 4.Tongji Univ, Int Joint Res Ctr Sustainable Urban Water Syst, Shanghai 200092, Peoples R China; 5.Shandong Univ, Sch Environm Sci & Engn, Jinan 250100, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Fan, P,Li, LN,Sun, YK,et al. Selenate removal by Fe-0 coupled with ferrous iron, hydrogen peroxide, sulfidation, and weak magnetic field: A comparative study[J]. WATER RESEARCH,2019,159:375-384.
APA	Fan, P,Li, LN,Sun, YK,Qiao, JL,Xu, CH,&Guan, XH.(2019).Selenate removal by Fe-0 coupled with ferrous iron, hydrogen peroxide, sulfidation, and weak magnetic field: A comparative study.WATER RESEARCH,159,375-384.
MLA	Fan, P,et al."Selenate removal by Fe-0 coupled with ferrous iron, hydrogen peroxide, sulfidation, and weak magnetic field: A comparative study".WATER RESEARCH 159(2019):375-384.