The adsorption behavior of U(VI) on granite

doi:10.1039/c3em00324h

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	The adsorption behavior of U(VI) on granite
	Fan, Q. H.1,2; Hao, L. M.2; Wang, C. L.1; Zheng, Z.1; Liu, C. L.1; Wu, W. S.2
刊名	ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS
	2014-03-01
卷号	16 期号:3 页码:534-541
ISSN号	2050-7887
DOI	10.1039/c3em00324h
英文摘要	The effects of pH, counter ions and temperature on the adsorption of U(VI) on Beishan granite (BsG) were investigated in the presence and absence of fulvic acid (FA) and humic acid (HA). The adsorption edge of U(VI) on BsG suggested that U(VI) adsorption was mainly controlled by ion exchange and outer-sphere complexation at tow pH, whereas inner-sphere complex was the dominant adsorption species in the pH range of 4.0-9.0. Above pH 9.0, Na2U2O7 might play an important role in the rise of U(VI) adsorption again. Counter ions such as Cl-, SO42- and PO43- can provoke U(VI) adsorption on BsG to some extent, which was directly correlated to the complexing ability of U(VI)-ligand. More noticeably, the large enhancement of U(VI) adsorption in the presence of phosphate can be attributed to the ternary complex formation (BsG-PO4-UO2), precipitation ((UO2)(3)(PO4)(2)(s)) and secondary phase (Na-autunite). Both FA and HA can slightly increase U(VI) adsorption at low pH, whereas they strongly inhibited U(VI) adsorption at high pH range. Artificial synthesized granite (AsG) prepared in the laboratory is impossible to use as an analogue of natural granite because of the large difference in the adsorption and surface properties.
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000333226700019
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/52467]
专题	中国科学院化学研究所
通讯作者	Liu, C. L.
作者单位	1.Peking Univ, Coll Chem & Mol Engn, Radiochem & Radiat Chem Key Lab Fundamental Sci, Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China 2.Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Fan, Q. H.,Hao, L. M.,Wang, C. L.,et al. The adsorption behavior of U(VI) on granite[J]. ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS,2014,16(3):534-541.
APA	Fan, Q. H.,Hao, L. M.,Wang, C. L.,Zheng, Z.,Liu, C. L.,&Wu, W. S..(2014).The adsorption behavior of U(VI) on granite.ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS,16(3),534-541.
MLA	Fan, Q. H.,et al."The adsorption behavior of U(VI) on granite".ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS 16.3(2014):534-541.