气候变化领域集成服务门户(CCPortal): Transport behaviors of Cs+ in granite porous media: Effects of mineral composition, HA, and coexisting cations

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DOI	10.1016/j.chemosphere.2020.129341
	Transport behaviors of Cs+ in granite porous media: Effects of mineral composition, HA, and coexisting cations
	Wang, Wei; Ding, Zhe; Wang, Yun; Geng, Rongyue; Zhang, Wentao; Wang, Jingjing; Liang, Jianjun; Li, Ping; Fan, Qiaohui
通讯作者	Fan, QH (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Peoples R China.
发表日期	2021
ISSN	0045-6535
EISSN	1879-1298
卷号	268
英文摘要	The transport of radiocesium (RCs) in granite has attracted great concerns for the consideration of a long-term safety assessment and performance evaluation of the nuclear waste disposal repository. In this study, the transport behaviors of Cs+ in granite were addressed and quantified by column experiments, sequential extraction, and a convection-dispersion equation model. The transport of Cs+ in granite experienced at least two stages including a rapid increase and a slow increase stages. The retardation of Cs+ in granite obviously became higher as biotite content increased. However, a consistent breakthrough plateau and almost overlapped breakthrough curves were observed under different feldspar contents, which suggested that the transport behaviors of Cs+ in granite was quite close to feldspar. Compared to Na+, K+ could effectively inhibit Cs+ adsorption and facilitate the mobility of Cs+ in granite column. In the presence of Sr2+, the transport of Cs+ was provoked in the granite column mainly due to the high competition effects. Humic acid (HA) did not obviously change the transport behaviors of Cs+ in granite column; however, HA could weakly change the adsorption species of Cs+ during Cs+ transport in granitic media. Both sequential extraction and two-site non-equilibrium model suggested that feldspar was the main contributor to the weak adsorption sites and biotite was responsible for the strong affinity sites for Cs+ in Beishan granite. The findings could provide important insights into RCs transport and fate in granitic media. (C) 2020 Elsevier Ltd. All rights reserved.
英文关键词	Cs+; Granite; Transport; Mineral composition; Coexisting cations
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000615571300116
来源期刊	CHEMOSPHERE
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/253825
作者单位	[Wang, Wei; Ding, Zhe; Wang, Yun; Geng, Rongyue; Zhang, Wentao; Wang, Jingjing; Liang, Jianjun; Li, Ping; Fan, Qiaohui] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Peoples R China; [Wang, Wei; Ding, Zhe; Wang, Yun; Geng, Rongyue; Zhang, Wentao; Wang, Jingjing; Liang, Jianjun; Li, Ping; Fan, Qiaohui] Key Lab Petr Resources, Lanzhou 730000, Gansu, Peoples R China; [Wang, Wei; Ding, Zhe; Wang, Yun; Geng, Rongyue] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wang, Wei,Ding, Zhe,Wang, Yun,et al. Transport behaviors of Cs+ in granite porous media: Effects of mineral composition, HA, and coexisting cations[J]. 中国科学院西北生态环境资源研究院,2021,268.
APA	Wang, Wei.,Ding, Zhe.,Wang, Yun.,Geng, Rongyue.,Zhang, Wentao.,...&Fan, Qiaohui.(2021).Transport behaviors of Cs+ in granite porous media: Effects of mineral composition, HA, and coexisting cations.CHEMOSPHERE,268.
MLA	Wang, Wei,et al."Transport behaviors of Cs+ in granite porous media: Effects of mineral composition, HA, and coexisting cations".CHEMOSPHERE 268(2021).