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DOI	10.1016/j.jenvrad.2021.106619
	Adsorption of U(VI) on the natural soil around a very low-level waste repository
	Wang, Jingjing; Qiang, Shirong; Wang, Yun; Wu, Wangsuo; Li, Ping; Qin, Haibo; 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	0265-931X
EISSN	1879-1700
卷号	233
英文摘要	The behaviors of U(VI) in environmental media around radioactive waste disposal site are important for safety assessment of geological repositories. However, the estimation of environmental behaviors of U(VI) in natural media was insufficient. This work aimed to determine the adsorption of U(VI) on natural soil surrounding a candidate very low-level radioactive waste (VLLW) disposal site in southwest China. Results showed that the adsorption process of U(VI) on soils could be well supported by pseudo-second-order kinetic and Freundlich model. The adsorption of U(VI) was pH-dependent but temperature-independent. High ionic strength (NaCl) strongly affected the adsorption process at low pH (2.0-5.5). CO32- remarkably inhibited the U(VI) adsorption, while the adsorption of U(VI) was promoted by PO43- and SO42-. Naturally occurred soil organic matters (SOMs) showed high affinity for U(VI), while the presence of additional humic acid (HA) strongly inhibited U(VI) adsorption. The occurrence of ferrous iron could result in the reduction of U(VI) at low pH values (pH < 4), leading to the promotion of immobilization of U(VI). These findings would provide some guidance for the safety assessments of the VLLW disposal as well as the remediation of contaminated soil.
关键词	IONIC-STRENGTH AQUEOUS-SOLUTIONS SPECTROSCOPIC CHARACTERIZATION URANIUM(VI) ADSORPTION HEAVY-METALS MINERAL COMPOSITIONS SORPTION BEHAVIOR ORGANIC-MATTER CLAY-MINERALS FOREIGN IONS
英文关键词	Uranium; Adsorption; Soil; Fe2+; Organic matters
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000648866900002
来源期刊	JOURNAL OF ENVIRONMENTAL RADIOACTIVITY
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/254365
作者单位	[Wang, Jingjing; Wu, Wangsuo] Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou 730000, Peoples R China; [Wang, Jingjing; Wang, Yun; Li, Ping; Fan, Qiaohui] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Peoples R China; [Qiang, Shirong] Lanzhou Univ, Inst Physiol, Sch Basic Med Sci, Key Lab Preclin Study New Drugs Gansu Prov, Lanzhou 730000, Peoples R China; [Qin, Haibo] Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550081, Peoples R China; [Fan, Qiaohui] Key Lab Petr Resources, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Wang, Jingjing,Qiang, Shirong,Wang, Yun,et al. Adsorption of U(VI) on the natural soil around a very low-level waste repository[J]. 中国科学院西北生态环境资源研究院,2021,233.
APA	Wang, Jingjing.,Qiang, Shirong.,Wang, Yun.,Wu, Wangsuo.,Li, Ping.,...&Fan, Qiaohui.(2021).Adsorption of U(VI) on the natural soil around a very low-level waste repository.JOURNAL OF ENVIRONMENTAL RADIOACTIVITY,233.
MLA	Wang, Jingjing,et al."Adsorption of U(VI) on the natural soil around a very low-level waste repository".JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 233(2021).