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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
发表期刊JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷号314期号:2页码:427-433
通讯作者Nankai 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
文章类型Article
摘要Bead 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.
关键词adsorption EXAFS iron oxyhydroxide bead cellulose
学科领域Chemistry
DOI10.1016/j.jcis.2007.05.071
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语种英语
WOS研究方向Chemistry
WOS类目Chemistry, Physical
WOS记录号WOS:000249312800011
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被引频次:58[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/237437
专题多学科研究中心
作者单位中国科学院高能物理研究所
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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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