The adsorption behavior of U(VI) on granite

doi:10.1039/c3em00324h

CORC > 北京大学 > 化学与分子工程学院

	The adsorption behavior of U(VI) on granite
	Fan, Q. H. ; Hao, L. M. ; Wang, C. L. ; Zheng, Z. ; Liu, C. L. ; Wu, W. S.
刊名	environmental science processes impacts
	2014
关键词	IONIC-STRENGTH BEISHAN GRANITE HUMIC-ACID AQUEOUS-SOLUTION FULVIC-ACID SORPTION PH ATTAPULGITE TEMPERATURE URANIUM(VI)
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.; Chemistry, Analytical; Environmental Sciences; SCI(E); PubMed; 2; ARTICLE; liucl@pku.edu.cn; wuws@lzu.edu.cn; 3; 534-541; 16
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/149762]
专题	化学与分子工程学院
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.
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.
MLA	Fan, Q. H.,et al."The adsorption behavior of U(VI) on granite".environmental science processes impacts (2014).