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Effect of pH, humic acid and addition sequences on Eu(III) sorption onto gamma-Al2O3 study by batch and time resolved laser fluorescence spectroscopy

文献类型：期刊论文

作者Wang, Xiangxue1,2; Chen, Zhongshan1; Tan, Xiaoli2,3; Hayat, Tasawar4; Ahmad, Bashir4; Dai, Songyuan1,2; Wang, Xiangke1,3,4
刊名CHEMICAL ENGINEERING JOURNAL
出版日期2016-03-01
卷号287期号:无页码:313-320
关键词Al2o3 Eu(Iii) Humic Acid Addition Sequences Trlfs
DOI10.1016/j.cej.2015.11.052
文献子类Article
英文摘要To contribute to the comprehension of Eu(III) sorption properties in oxide-organic material systems, the influence of humic acid (HA) on Eu(III) sorption on bare and HA-bounded gamma-Al2O3 is studied using batch experiments and time resolved laser fluorescence spectroscopy (TRLFS). The effect of pH and addition sequences of Eu(111)/HA/Al2O3 on Eu(III) sorption is carried out at different experimental conditions, and the results show that the sorption of Eu(III) is strongly dependent on pH and ionic strength. The sorption of Eu(III) is mainly dominated by ion exchange or outer-sphere surface complexation at low pH, and by inner-sphere surface complexation at high pH values. The presence of HA enhances Eu(III) sorption at low pH, but reduces Eu(III) sorption at high pH values. The addition sequences of Eu(III)/HA to alumina suspensions do not affect Eu(III) sorption, which is also evidenced by the TRLFS measurements. The surface complexes are characterized by their emission spectra [the ratio of emission intensities of D-5(0) -> F-7(1) (lambda = 594 nm) and D-5(0) -> F-7(2) (lambda = 619 nm) transitions] and their fluorescence lifetime. The TRLFS results show clearly that no effect of addition sequences on the sorption and speciation of Eu(III) in HA-Al2O3 hybrids after equilibration. These findings on the effect of humic substances in the complexation properties of Eu(III) indicate that the clarification of the environmental behavior of humic substances is necessary to understand the physicochemical properties of Eu(III), or its analog trivalent lanthanide and actinide ions in the natural environment. (C) 2015 Elsevier B.V. All rights reserved.
WOS关键词GRAPHENE OXIDE NANOSHEETS ; CA-MONTMORILLONITE ; IONIC-STRENGTH ; GAMMA-ALUMINA ; NA-ILLITE ; ADSORPTION ; URANIUM ; SURFACE ; EXAFS ; XPS
WOS研究方向Engineering
语种英语
WOS记录号WOS:000369461800035
资助机构Alexander von Humboldt (AvH) foundation in FZK, Germany ; Alexander von Humboldt (AvH) foundation in FZK, Germany ; Alexander von Humboldt (AvH) foundation in FZK, Germany ; Alexander von Humboldt (AvH) foundation in FZK, Germany ; Alexander von Humboldt (AvH) foundation in FZK, Germany ; Alexander von Humboldt (AvH) foundation in FZK, Germany ; Alexander von Humboldt (AvH) foundation in FZK, Germany ; Alexander von Humboldt (AvH) foundation in FZK, Germany ; Alexander von Humboldt (AvH) foundation in FZK, Germany ; Alexander von Humboldt (AvH) foundation in FZK, Germany ; Alexander von Humboldt (AvH) foundation in FZK, Germany ; Alexander von Humboldt (AvH) foundation in FZK, Germany ; Alexander von Humboldt (AvH) foundation in FZK, Germany ; Alexander von Humboldt (AvH) foundation in FZK, Germany ; Alexander von Humboldt (AvH) foundation in FZK, Germany ; Alexander von Humboldt (AvH) foundation in FZK, Germany ; National Natural Science Foundation of China(21225730 ; National Natural Science Foundation of China(21225730 ; 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priority Academic program development of Jiangsu Higher Education Institutions ; priority Academic program development of Jiangsu Higher Education Institutions ; priority Academic program development of Jiangsu Higher Education Institutions ; priority Academic program development of Jiangsu Higher Education Institutions ; priority Academic program development of Jiangsu Higher Education Institutions ; priority Academic program development of Jiangsu Higher Education Institutions ; priority Academic program development of Jiangsu Higher Education Institutions ; priority Academic program development of Jiangsu Higher Education Institutions ; priority Academic program development of Jiangsu Higher Education Institutions ; priority Academic program development of Jiangsu Higher Education Institutions ; priority Academic program development of Jiangsu Higher Education Institutions ; priority Academic program development of Jiangsu Higher Education Institutions ; Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions ; 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Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions ; Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions ; Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions ; Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions ; 21577032 ; 21577032 ; 21577032 ; 21577032 ; 21577032 ; 21577032 ; 21577032 ; 21577032 ; 21577032 ; 21577032 ; 21577032 ; 21577032 ; 21577032 ; 21577032 ; 21577032 ; 21577032 ; 91326202) ; 91326202) ; 91326202) ; 91326202) ; 91326202) ; 91326202) ; 91326202) ; 91326202) ; 91326202) ; 91326202) ; 91326202) ; 91326202) ; 91326202) ; 91326202) ; 91326202) ; 91326202)
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/21740]  
专题合肥物质科学研究院_中科院等离子体物理研究所
作者单位1.North China Elect Power Univ, Sch Environm & Chem Engn, Beijing 102206, Peoples R China
2.Chinese Acad Sci, Inst Plasma Phys, POB 1126, Hefei 230031, Anhui, Peoples R China
3.Collaborat Innovat Ctr Radiat Med Jiangsu Higher, Nanjing, Peoples R China
4.King Abdulaziz Univ, Fac Sci, NAAM Res Grp, Jeddah 21589, Saudi Arabia
推荐引用方式
GB/T 7714		 Wang, Xiangxue,Chen, Zhongshan,Tan, Xiaoli,et al. Effect of pH, humic acid and addition sequences on Eu(III) sorption onto gamma-Al2O3 study by batch and time resolved laser fluorescence spectroscopy[J]. CHEMICAL ENGINEERING JOURNAL,2016,287(无):313-320.
APA Wang, Xiangxue.,Chen, Zhongshan.,Tan, Xiaoli.,Hayat, Tasawar.,Ahmad, Bashir.,...&Wang, Xiangke.(2016).Effect of pH, humic acid and addition sequences on Eu(III) sorption onto gamma-Al2O3 study by batch and time resolved laser fluorescence spectroscopy.CHEMICAL ENGINEERING JOURNAL,287(无),313-320.
MLA Wang, Xiangxue,et al."Effect of pH, humic acid and addition sequences on Eu(III) sorption onto gamma-Al2O3 study by batch and time resolved laser fluorescence spectroscopy".CHEMICAL ENGINEERING JOURNAL 287.无(2016):313-320.

入库方式： OAI收割

来源：合肥物质科学研究院

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