Arsenate and cadmium co-adsorption and co-precipitation on goethite
Jiang, W; Lv, JT; Luo, L; Yang, K; Lin, YF; Hu, FB; Zhang, J; Zhang, SZ; Zhang J(张静)
刊名JOURNAL OF HAZARDOUS MATERIALS
2013
卷号262页码:55-63
关键词Arsenate Cadmium Goethite Adsorption Precipitation
学科分类Engineering; Environmental Sciences & Ecology
DOI10.1016/j.jhazmat.2013.08.030
英文摘要Arsenate (As(V), AsO43-) and cadmium (Cd) are among the toxic elements of most concern. Their sorption behaviors on goethite were studied by batch experiments (pH edges, isotherms and kinetics) and X-ray diffraction (XRD). Arsenic coordination environment was explored by X-ray absorbance fine structure (EXAFS) analysis. Sorption isotherms of both As(V) and Cd on goethite could be divided into the adsorption-dominated and precipitation-dominated parts, while their sorption showed different pH-dependency and sorption reversibility. Cadmium adsorption was enhanced in the presence of AsO43-, which could be explained by the decrease in the electrostatic potential due to the sorption of AsO43- and the formation of a ternary Cd-As(V)-goethite complex. Based on the EXAFS study, AsO43- adsorbed on goethite mainly formed bidentate-binuclear complex. The high loadings of Cd changed the As(V)-Fe distance and its coordination number. However, Cd did not affect the As(V) adsorption amount in the adsorption-dominated region. When As(V) and Cd formed co-precipitates, their sorption amounts were both increased. The formation of co-precipitates decreased the mobility of Cd but increased the mobility of As(V) because less As(V) was sorbed on goethite through surface complexation. This study will provide better understandings on As(V) and Cd transport and useful information on their remediation strategies. (C) 2013 Elsevier B.V. All rights reserved.
收录类别SCI
WOS记录号WOS:000329595500008
引用统计
被引频次:27[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/311005/223805
专题中国科学院高能物理研究所_多学科研究中心_期刊论文
推荐引用方式
GB/T 7714
Jiang, W,Lv, JT,Luo, L,et al. Arsenate and cadmium co-adsorption and co-precipitation on goethite[J]. JOURNAL OF HAZARDOUS MATERIALS,2013,262:55-63.
APA Jiang, W.,Lv, JT.,Luo, L.,Yang, K.,Lin, YF.,...&张静.(2013).Arsenate and cadmium co-adsorption and co-precipitation on goethite.JOURNAL OF HAZARDOUS MATERIALS,262,55-63.
MLA Jiang, W,et al."Arsenate and cadmium co-adsorption and co-precipitation on goethite".JOURNAL OF HAZARDOUS MATERIALS 262(2013):55-63.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
691.pdf(1787KB)期刊论文作者接受稿开放获取CC BY-NC-SA浏览 请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Jiang, W]的文章
[Lv, JT]的文章
[Luo, L]的文章
百度学术
百度学术中相似的文章
[Jiang, W]的文章
[Lv, JT]的文章
[Luo, L]的文章
必应学术
必应学术中相似的文章
[Jiang, W]的文章
[Lv, JT]的文章
[Luo, L]的文章
相关权益政策
暂无数据
收藏/分享
文件名: 691.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。