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Mechanism of removal of arsenic by bead cellulose loaded with iron oxyhydroxide (beta-FeOOH): EXAFS study
Guo, XJ; Du YH(杜永华); Du, YH; Chen, FH; Park, HS; Xie, YN; Xie YN(谢亚宁)
2007
Source PublicationJOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume314Issue:2Pages:427-433
Corresponding AuthorNankai Univ, Coll Environm Sci & Engn, Tianjin 300071, Peoples R China ; Univ Ulsan, Dept Civil & Environm Engn, Ulsan 680749, South Korea ; Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
SubtypeArticle
AbstractBead cellulose loaded with iron oxyhydroxide (BCF) with 47 mass% Fe content was prepared and was successfully applied to the elimination of arsenic from aqueous solutions. A clearer understanding of the arsenic removal mechanism will provide accurate prediction of the arsenic adsorptive properties of the new adsorbent. To study the mechanism of the adsorption process, we measured the extended X-ray absorption fine structure (EXAFS) spectra of arsenite and arsenate sorbed onto the adsorbent with different surface coverages. Both arsenite and arsenate were strongly and specifically adsorbed by akaganeite adsorptive centers on BCF by an inner-sphere mechanism. There was no change in oxidation state followinE interaction between the arsenic species and the BCF surface. The dominant complex of arsenic species adsorbed on akagan6ite was bidentate binuclear comer-sharing (C-2) between As(V) tetrahedra (or As(Ill) pyramids) and adjacent edge-sharing FeO6 octahedra. On the basis of the results from EXAFS spectra, the adsorptive characteristics of arsenic, such as the effects of pH and competing anions, were satisfactorily interpreted. (c) 2007 Elsevier Inc. All rights reserved.
Keywordadsorption EXAFS iron oxyhydroxide bead cellulose
Subject AreaChemistry
DOI10.1016/j.jcis.2007.05.071
URL查看原文
Indexed ByADS
Language英语
WOS Research AreaChemistry
WOS SubjectChemistry, Physical
WOS IDWOS:000249312800011
ADS Bibcode2007JCIS..314..427G
ADS URLhttps://ui.adsabs.harvard.edu/abs/2007JCIS..314..427G
ADS CITATIONShttps://ui.adsabs.harvard.edu/abs/2007JCIS..314..427G/citations
Citation statistics
Cited Times:13 [ADS]
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/237437
Collection多学科研究中心
Affiliation中国科学院高能物理研究所
First Author AffilicationInstitute of High Energy
Recommended Citation
GB/T 7714
Guo, XJ,Du YH,Du, YH,et al. Mechanism of removal of arsenic by bead cellulose loaded with iron oxyhydroxide (beta-FeOOH): EXAFS study[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2007,314(2):427-433.
APA Guo, XJ.,杜永华.,Du, YH.,Chen, FH.,Park, HS.,...&谢亚宁.(2007).Mechanism of removal of arsenic by bead cellulose loaded with iron oxyhydroxide (beta-FeOOH): EXAFS study.JOURNAL OF COLLOID AND INTERFACE SCIENCE,314(2),427-433.
MLA Guo, XJ,et al."Mechanism of removal of arsenic by bead cellulose loaded with iron oxyhydroxide (beta-FeOOH): EXAFS study".JOURNAL OF COLLOID AND INTERFACE SCIENCE 314.2(2007):427-433.
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