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DOI	10.1016/j.eti.2021.101615
	The adsorption of U(VI) on magnetite, ferrihydrite and goethite
	Wang, Yun; Wang, Jingjing; Li, Ping; Qin, Haibo; Liang, Jianjun; Fan, Qiaohui
通讯作者	Li, P (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Peoples R China. ; Qin, HB (通讯作者)，Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550081, Peoples R China.
发表日期	2021
ISSN	2352-1864
卷号	23
英文摘要	During the long-term disposal of radioactive waste, ferrous waste containers and building materials are tending to corrode to produce a large number of iron oxides. The formed iron oxides would bring significant effects on the diffusion and migration of radionuclides through adsorption and reduction. This study aimed to evaluate the interaction of U(VI) on iron oxides under anaerobic conditions, where goethite, magnetite, and ferrihydrite were used as adsorbents. The results showed that the adsorption of U(VI) on iron oxides was chemical adsorption, and the adsorption capacity of U(VI) on ferrihydrite was much higher than that on goethite and magnetite. Humic acid (HA) promoted the adsorption of U(VI) on iron oxides under acidic conditions, while U(VI) adsorption was inhibited by HA in the neutral to alkaline conditions. The adsorption of U(VI) on iron oxides was an endothermic process, and higher temperature was beneficial for the adsorption. Surface complexation modeling (SCM) fitting revealed that monodentate inner complexes of = FeOUO2+ and = FeOUO2(OH)(0) were mainly formed on the surface of iron oxides. Finally, the reduction of U(VI) to U(IV) on magnetite under anaerobic condition was confirmed by X-ray photoelectron spectroscopy (XPS) and Mossbauer spectroscopy. (C) 2021 Elsevier B.V. All rights reserved.
关键词	CORROSION PRODUCTS SORPTION URANIUM TEMPERATURE DESORPTION COMPLEXES TH(IV)MODEL IONS PH
英文关键词	Uranium; Iron oxides; Adsorption; Anaerobic condition; Reduction
语种	英语
WOS研究方向	Biotechnology & Applied Microbiology ; Engineering ; Environmental Sciences & Ecology
WOS类目	Biotechnology & Applied Microbiology ; Engineering, Environmental ; Environmental Sciences
WOS记录号	WOS:000685036700002
来源期刊	ENVIRONMENTAL TECHNOLOGY & INNOVATION
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/253779
作者单位	[Wang, Yun; Wang, Jingjing; Li, Ping; Liang, Jianjun; Fan, Qiaohui] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Peoples R China; [Wang, Yun; Wang, Jingjing; Li, Ping; Liang, Jianjun; Fan, Qiaohui] Key Lab Petr Resources, Lanzhou 730000, Gansu, Peoples R China; [Qin, Haibo] Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550081, Peoples R China
推荐引用方式 GB/T 7714	Wang, Yun,Wang, Jingjing,Li, Ping,et al. The adsorption of U(VI) on magnetite, ferrihydrite and goethite[J]. 中国科学院西北生态环境资源研究院,2021,23.
APA	Wang, Yun,Wang, Jingjing,Li, Ping,Qin, Haibo,Liang, Jianjun,&Fan, Qiaohui.(2021).The adsorption of U(VI) on magnetite, ferrihydrite and goethite.ENVIRONMENTAL TECHNOLOGY & INNOVATION,23.
MLA	Wang, Yun,et al."The adsorption of U(VI) on magnetite, ferrihydrite and goethite".ENVIRONMENTAL TECHNOLOGY & INNOVATION 23(2021).