| 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)
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| 2007
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| 发表期刊 | JOURNAL OF COLLOID AND INTERFACE SCIENCE
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| 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
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| 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. |
| 文章类型 | Article
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| 关键词 | adsorption
EXAFS
iron oxyhydroxide
bead cellulose
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| 学科领域 | Chemistry
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| 研究领域[WOS] | Chemistry
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| DOI | 10.1016/j.jcis.2007.05.071
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| URL | 查看原文
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| 语种 | 英语
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| WOS类目 | Chemistry, Physical
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| WOS记录号 | WOS:000249312800011
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://ir.ihep.ac.cn/handle/311005/237437
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| 专题 | 多学科研究中心
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| 作者单位 | 中国科学院高能物理研究所
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推荐引用方式
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.
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| 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.
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| 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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