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New Synthesis of nZVI/C Composites as an Efficient Adsorbent for the Uptake of U(VI) from Aqueous Solutions
Liu, Haibo1; Li, Mengxue1; Chen, Tianhu1; Chen, Changlun2,3; Alharb, Njud S.3; Hayat, Tasawar4; Chen, Dong1; Zhang, Qiang1; Sun, Yubing2,5
2017-08-15
Source PublicationENVIRONMENTAL SCIENCE & TECHNOLOGY
Volume51Issue:16Pages:9227-9234
AbstractNew nanoscale zerovalent iron/carbon (nZVI/C) composites were successfully prepared via heating natural hematite and pine sawdust at 800 degrees C under nitrogen conditions. Characterization by SEM, XRD, FTIR, and XPS analyses indicated that the as-prepared nZVI/C composites contained a large number of reactive sites. The lack of influence of the ionic strength revealed inner-sphere complexation dominated U(VI) uptake by the nZVI/C composites. Simultaneous adsorption and reduction were involved in the uptake process of U(VI) according to the results of XPS and XANES analyses. The presence of U-C/U-U shells demonstrated that innersphere complexation and surface coprecipitation dominated the U(VI) uptake at low and high pH conditions, respectively. The uptake behaviors of U(VI) by the nZVI/C composites were fitted well by surface complexation modeling with two weak and two strong sites. The maximum uptake capacity of U(VI) by the nZVI/C composites was 186.92 mg/g at pH 4.0 and 328 K. Additionally, the nZVI/C composites presented good recydability and recoverability for U(VI) uptake in regeneration experiments. These observations indicated that the nZVI/C composites can be considered as potential adsorbents to remove radionuclides for environmental remediation.
SubtypeArticle
WOS HeadingsScience & Technology ; Technology ; Life Sciences & Biomedicine
Funding OrganizationNatural Science Foundation of China(41402030 ; Natural Science Foundation of China(41402030 ; Fundamental Research Funds for the Central Universities(JZ2017HGTB0196) ; Fundamental Research Funds for the Central Universities(JZ2017HGTB0196) ; Jiangsu Provincial Key Laboratory of Radiation Medicine and Protection ; Jiangsu Provincial Key Laboratory of Radiation Medicine and Protection ; Priority Academic Program Development of the Jiangsu Higher Education Institutions ; Priority Academic Program Development of the Jiangsu Higher Education Institutions ; 41572029) ; 41572029) ; Natural Science Foundation of China(41402030 ; Natural Science Foundation of China(41402030 ; Fundamental Research Funds for the Central Universities(JZ2017HGTB0196) ; Fundamental Research Funds for the Central Universities(JZ2017HGTB0196) ; Jiangsu Provincial Key Laboratory of Radiation Medicine and Protection ; Jiangsu Provincial Key Laboratory of Radiation Medicine and Protection ; Priority Academic Program Development of the Jiangsu Higher Education Institutions ; Priority Academic Program Development of the Jiangsu Higher Education Institutions ; 41572029) ; 41572029)
DOI10.1021/acs.est.7b02431
WOS KeywordZERO-VALENT IRON ; NANOSCALE ZEROVALENT IRON ; GRAPHENE OXIDE ; MODELING TECHNIQUES ; CARBONACEOUS NANOFIBERS ; X-RAY ; SIMULTANEOUS ADSORPTION ; COMPETITIVE SORPTION ; EFFECTIVE REMOVAL ; WATER INTERFACE
Indexed BySCI
Language英语
Funding OrganizationNatural Science Foundation of China(41402030 ; Natural Science Foundation of China(41402030 ; Fundamental Research Funds for the Central Universities(JZ2017HGTB0196) ; Fundamental Research Funds for the Central Universities(JZ2017HGTB0196) ; Jiangsu Provincial Key Laboratory of Radiation Medicine and Protection ; Jiangsu Provincial Key Laboratory of Radiation Medicine and Protection ; Priority Academic Program Development of the Jiangsu Higher Education Institutions ; Priority Academic Program Development of the Jiangsu Higher Education Institutions ; 41572029) ; 41572029) ; Natural Science Foundation of China(41402030 ; Natural Science Foundation of China(41402030 ; Fundamental Research Funds for the Central Universities(JZ2017HGTB0196) ; Fundamental Research Funds for the Central Universities(JZ2017HGTB0196) ; Jiangsu Provincial Key Laboratory of Radiation Medicine and Protection ; Jiangsu Provincial Key Laboratory of Radiation Medicine and Protection ; Priority Academic Program Development of the Jiangsu Higher Education Institutions ; Priority Academic Program Development of the Jiangsu Higher Education Institutions ; 41572029) ; 41572029)
WOS Research AreaEngineering ; Environmental Sciences & Ecology
WOS SubjectEngineering, Environmental ; Environmental Sciences
WOS IDWOS:000407987400038
Citation statistics
Cited Times:53[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.hfcas.ac.cn:8080/handle/334002/33642
Collection中科院等离子体物理研究所
Affiliation1.Hefei Univ Technol, Sch Resources & Environm Engn, Hefei 230009, Anhui, Peoples R China
2.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Anhui, Peoples R China
3.King Abdulaziz Univ, Dept Biol Sci, Fac Sci, Jeddah 21589, Saudi Arabia
4.Kind Abdulaziz Univ, NAAM Res Grp, Jeddah 21589, Saudi Arabia
5.Soochow Univ, Sch Radiol & Interdisciplinary Sci, Suzhou 215123, Peoples R China
Recommended Citation
GB/T 7714
Liu, Haibo,Li, Mengxue,Chen, Tianhu,et al. New Synthesis of nZVI/C Composites as an Efficient Adsorbent for the Uptake of U(VI) from Aqueous Solutions[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2017,51(16):9227-9234.
APA Liu, Haibo.,Li, Mengxue.,Chen, Tianhu.,Chen, Changlun.,Alharb, Njud S..,...&Sun, Yubing.(2017).New Synthesis of nZVI/C Composites as an Efficient Adsorbent for the Uptake of U(VI) from Aqueous Solutions.ENVIRONMENTAL SCIENCE & TECHNOLOGY,51(16),9227-9234.
MLA Liu, Haibo,et al."New Synthesis of nZVI/C Composites as an Efficient Adsorbent for the Uptake of U(VI) from Aqueous Solutions".ENVIRONMENTAL SCIENCE & TECHNOLOGY 51.16(2017):9227-9234.
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