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Spectroscopic and Modeling Investigation of Eu(III)/U(VI) Sorption on Nanomagnetite from Aqueous Solutions
Li, Mengxue1; Sun, Yubing2; Liu, Haibo1; Chen, Tianhu1; Hayat, Tasawar3; Alharbi, Njud S.4; Chen, Changlun2,3,4
2017-06-01
Source PublicationACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume5Issue:6Pages:5493-5502
AbstractNanomagnetite was synthesized by heating natural siderite in nitrogen conditions and was characterized using XRD, XPS, TEM, FT-IR and acid base titration. Characteristic results illustrated that the reactive site density (17.91 sites/nm(2)) of nanomagnetite was significantly higher than that of natural siderite (3.63 sites/nm(2)), whereas average pore size (14.9 nm) of nanomagnetite decreased compared to natural siderite (52.5 nm). Effects of different ambient conditions (i.e., pH, contact time, temperatures and ionic strength) on removal behaviors of Eu(III)/U(VI) on nano magnetite were conducted by batch experiments. Removal isotherms and kinetics of Eu(III)/U(VI) on nanomagnetite fitted well by models of Langniuir and pseudo-second kinetic, respectively. Additionally, the max sorption capacity of nanomagnetite with Eu(III) (11.95 mg/g) at pH = 2.5 and T = 328 K was significantly higher than sorption capacity of U(VI) (4.93 mg/g). The XPS analysis demonstrated that the surface oxygen groups of nanomagnetite played an important role in the sorption process of. Eu(III)/U(VI) via inner surface complexation. The sorption of Eu(III)/U(VI) on nanomagnetite fitted satisfactorily using surface complexation modeling with two and three inner-sphere surface complexation sites, respectively. These findings are crucial for the evaluation of radioactive nuclides at ultralow pH conditions.
SubtypeArticle
KeywordNanomagnetite Radionuclides Xps Analysis Surface Complexation Modeling Adsorption Mechanism
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
Funding OrganizationNational Natural Science Foundation of China(41402030 ; Fundamental Research Funds for the Central Universities(JZ2017HGTB0196) ; 41172048 ; 41572029) ; National Natural Science Foundation of China(41402030 ; Fundamental Research Funds for the Central Universities(JZ2017HGTB0196) ; 41172048 ; 41572029)
DOI10.1021/acssuschemeng.7b00829
WOS KeywordOXIDE MAGNETIC COMPOSITES ; HIGHLY EFFICIENT SORPTION ; GRAPHENE OXIDES ; BACILLUS-SUBTILIS ; CARBON NANOTUBES ; IONIC-STRENGTH ; HUMIC-ACID ; URANIUM VI ; U(VI) ; REMOVAL
Indexed BySCI
Language英语
Funding OrganizationNational Natural Science Foundation of China(41402030 ; Fundamental Research Funds for the Central Universities(JZ2017HGTB0196) ; 41172048 ; 41572029) ; National Natural Science Foundation of China(41402030 ; Fundamental Research Funds for the Central Universities(JZ2017HGTB0196) ; 41172048 ; 41572029)
WOS Research AreaChemistry ; Engineering
WOS SubjectChemistry, Multidisciplinary ; Engineering, Chemical
WOS IDWOS:000402950000113
Citation statistics
Cited Times:36[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.hfcas.ac.cn:8080/handle/334002/31897
Collection中科院等离子体物理研究所
Affiliation1.Hefei Univ Technol, Sch Resources & Environm Engn, Hefei 230009, Peoples R China
2.Chinese Acad Sci, Inst Plasma Phys, Key Lab New Thin Film Solar Cells, POB 1126, Hefei 230031, Anhui, Peoples R China
3.King Abdulaziz Univ, Fac Sci, NAAM Res Grp, Jeddah 21589, Saudi Arabia
4.King Abdulaziz Univ, Fac Sci, Dept Biol Sci, Jeddah 21589, Saudi Arabia
Recommended Citation
GB/T 7714
Li, Mengxue,Sun, Yubing,Liu, Haibo,et al. Spectroscopic and Modeling Investigation of Eu(III)/U(VI) Sorption on Nanomagnetite from Aqueous Solutions[J]. ACS SUSTAINABLE CHEMISTRY & ENGINEERING,2017,5(6):5493-5502.
APA Li, Mengxue.,Sun, Yubing.,Liu, Haibo.,Chen, Tianhu.,Hayat, Tasawar.,...&Chen, Changlun.(2017).Spectroscopic and Modeling Investigation of Eu(III)/U(VI) Sorption on Nanomagnetite from Aqueous Solutions.ACS SUSTAINABLE CHEMISTRY & ENGINEERING,5(6),5493-5502.
MLA Li, Mengxue,et al."Spectroscopic and Modeling Investigation of Eu(III)/U(VI) Sorption on Nanomagnetite from Aqueous Solutions".ACS SUSTAINABLE CHEMISTRY & ENGINEERING 5.6(2017):5493-5502.
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