Document Detail


Impact of water quality parameters on the sorption of U(VI) onto hematite.
MedLine Citation:
PMID:  22036154     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
In this study, the sorption of U(VI) from aqueous solution on hematite was studied as a function of various water quality parameters such as contact time, pH, ionic strength, soil humic acid (HA) or fulvic acid (FA), solid content and temperature by using a batch technique. The results demonstrated that the sorption of U(VI) was strongly dependent on ionic strength at pH<6.0, and outer-sphere surface complexation may be the main sorption mechanism. The sorption was independent of ionic strength at pH>6.0 and the sorption was mainly dominated by inner-sphere surface complexation. The presence of HA/FA increases U(VI) sorption at low pH, whereas decreases U(VI) sorption at high pH. The thermodynamic parameters (ΔH(0), ΔS(0), and ΔG(0)) were calculated from the temperature dependent sorption isotherms, and the results suggested that U(VI) sorption was a spontaneous and endothermic process. The results might be important for the application of hematite in U(VI) pollution management.
Authors:
Donglin Zhao; Xianbiao Wang; Shitong Yang; Zhiqiang Guo; Guodong Sheng
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Publication Detail:
Type:  Journal Article     Date:  2011-09-25
Journal Detail:
Title:  Journal of environmental radioactivity     Volume:  103     ISSN:  1879-1700     ISO Abbreviation:  J Environ Radioact     Publication Date:  2012 Jan 
Date Detail:
Created Date:  2011-10-31     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8508119     Medline TA:  J Environ Radioact     Country:  England    
Other Details:
Languages:  eng     Pagination:  20-9     Citation Subset:  IM    
Copyright Information:
Copyright © 2011 Elsevier Ltd. All rights reserved.
Affiliation:
School of Materials and Chemical Engineering, Anhui University of Architecture, Hefei 230601, PR China; Key Laboratory of Novel Thin Film Solar Cells, Institute of Plasma Physics, Chinese Academy of Sciences, P.O. Box 1126, Hefei 230031, PR China.
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