Sorption of uranyl ions on TiO2: Effects of pH, contact time, ionic strength, temperature and HA

doi:10.1016/j.jes.2018.03.010

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 兰州油气中心

	Sorption of uranyl ions on TiO2: Effects of pH, contact time, ionic strength, temperature and HA
	Wang, Jingjing 1,2; He, Bihong 2; Wei, Xiaoyan 1,2; Li, Ping 2; Liang, Jianjun 2; Qiang, Shirong 3; Fan, Qiaohui 2; Wu, Wangsuo 1
刊名	JOURNAL OF ENVIRONMENTAL SCIENCES
	2019
卷号	75 页码:115-123
关键词	Sorption Uranium TiO2 Ionic strength Soil humic acid
ISSN号	1001-0742
DOI	10.1016/j.jes.2018.03.010
英文摘要	Sorption of U(VI) onto TiO2 as functions of pH, ionic strength, contact time, soil humic acid (SHA), solid-to-liquid ratio and temperature was studied under ambient conditions using batch and spectroscopic approaches. The sorption of U(VI) on TiO2 was significantly dependent on pH and ionic strength. The presence of SHA slightly enhanced the sorption of U(VI) on TiO2 below pH 4.0, while it inhibited U(VI) sorption in the higher pH range. U(VI) sorption on TiO2 was favored at high temperatures, and the sorption process was estimated to be endothermic and spontaneous. Reduction of U(VI) to lower valent species was confirmed by X-ray photo-electron spectroscopy analysis. It is very interesting to find that U(VI) sorption on TiO2 was promoted in solutions with higher back-ground electrolyte concentrations. In the presence of U(VI), higher back-ground electrolyte made more TiO2 particles aggregate through (001) facets, leading more (101) facets to be exposed. Therefore, the reduction of U(VI) was enhanced by the exposed (101) facets and more U(VI) removal was observed. (c) 2018 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
资助项目	Natural National Science Foundation of China[21601169] ; Natural National Science Foundation of China[41573128] ; Natural National Science Foundation of China[21601179] ; Natural National Science Foundation of China[21647009] ; Natural National Science Foundation of Gansu Province[17JR5RA309] ; Key Laboratory Project of Gansu Province[1309RTSA041] ; CAS "Light of West China" Program ; "100-Talent" Program from the Chinese Academy of Sciences in Lanzhou Center for Oil and Gas Resources, Institute of Geology and Geophysics, CAS
WOS关键词	HUMIC-ACID ; FULVIC-ACID ; EFFICIENT REMOVAL ; AQUEOUS-SOLUTIONS ; NA-RECTORITE ; ADSORPTION ; U(VI) ; EU(III) ; URANIUM ; SURFACE
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000459207900010
资助机构	Natural National Science Foundation of China ; Natural National Science Foundation of China ; Natural National Science Foundation of Gansu Province ; Natural National Science Foundation of Gansu Province ; Key Laboratory Project of Gansu Province ; Key Laboratory Project of Gansu Province ; CAS "Light of West China" Program ; CAS "Light of West China" Program ; "100-Talent" Program from the Chinese Academy of Sciences in Lanzhou Center for Oil and Gas Resources, Institute of Geology and Geophysics, CAS ; "100-Talent" Program from the Chinese Academy of Sciences in Lanzhou Center for Oil and Gas Resources, Institute of Geology and Geophysics, CAS ; Natural National Science Foundation of China ; Natural National Science Foundation of China ; Natural National Science Foundation of Gansu Province ; Natural National Science Foundation of Gansu Province ; Key Laboratory Project of Gansu Province ; Key Laboratory Project of Gansu Province ; CAS "Light of West China" Program ; CAS "Light of West China" Program ; "100-Talent" Program from the Chinese Academy of Sciences in Lanzhou Center for Oil and Gas Resources, Institute of Geology and Geophysics, CAS ; "100-Talent" Program from the Chinese Academy of Sciences in Lanzhou Center for Oil and Gas Resources, Institute of Geology and Geophysics, CAS ; Natural National Science Foundation of China ; Natural National Science Foundation of China ; Natural National Science Foundation of Gansu Province ; Natural National Science Foundation of Gansu Province ; Key Laboratory Project of Gansu Province ; Key Laboratory Project of Gansu Province ; CAS "Light of West China" Program ; CAS "Light of West China" Program ; "100-Talent" Program from the Chinese Academy of Sciences in Lanzhou Center for Oil and Gas Resources, Institute of Geology and Geophysics, CAS ; "100-Talent" Program from the Chinese Academy of Sciences in Lanzhou Center for Oil and Gas Resources, Institute of Geology and Geophysics, CAS ; Natural National Science Foundation of China ; Natural National Science Foundation of China ; Natural National Science Foundation of Gansu Province ; Natural National Science Foundation of Gansu Province ; Key Laboratory Project of Gansu Province ; Key Laboratory Project of Gansu Province ; CAS "Light of West China" Program ; CAS "Light of West China" Program ; "100-Talent" Program from the Chinese Academy of Sciences in Lanzhou Center for Oil and Gas Resources, Institute of Geology and Geophysics, CAS ; "100-Talent" Program from the Chinese Academy of Sciences in Lanzhou Center for Oil and Gas Resources, Institute of Geology and Geophysics, CAS
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/90684]
专题	地质与地球物理研究所_兰州油气中心
通讯作者	Li, Ping; Qiang, Shirong; Wu, Wangsuo
作者单位	1.Lanzhou Univ, Sch Nucl Sci & Technol, Radiochem Lab, Lanzhou 730000, Gansu, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Gansu Prov Key Lab Petr Resources Res, Key Lab Petr Resources, Lanzhou 730000, Gansu, Peoples R China 3.Lanzhou Univ, Sch Basic Med Sci, Inst Physiol, Key Lab Preclin Study New Drugs Gansu Prov, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Wang, Jingjing,He, Bihong,Wei, Xiaoyan,et al. Sorption of uranyl ions on TiO2: Effects of pH, contact time, ionic strength, temperature and HA[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2019,75:115-123.
APA	Wang, Jingjing.,He, Bihong.,Wei, Xiaoyan.,Li, Ping.,Liang, Jianjun.,...&Wu, Wangsuo.(2019).Sorption of uranyl ions on TiO2: Effects of pH, contact time, ionic strength, temperature and HA.JOURNAL OF ENVIRONMENTAL SCIENCES,75,115-123.
MLA	Wang, Jingjing,et al."Sorption of uranyl ions on TiO2: Effects of pH, contact time, ionic strength, temperature and HA".JOURNAL OF ENVIRONMENTAL SCIENCES 75(2019):115-123.