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| Enhanced arsenate removal by novel Fe-La composite (hydr)oxides synthesized via coprecipitation | |
Zhang, Wei1,2,3; Fu, Jun4; Zhang, Gaosheng1,2 ; Zhang, Xiwang5; Zhang, GS (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, Key Lab Coastal Zone Environm Proc, 17th Chunhui Rd, Shandong 264003, Peoples R China. gszhang@yic.ac.cn
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| 发表期刊 | CHEMICAL ENGINEERING JOURNAL
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| ISSN | 1385-8947 |
| 2014-09-01 | |
| 卷号 | 251页码:69-79 |
| 关键词 | Fe-la Composite (Hydr)Oxides Arsenate Adsorption Removal |
| DOI | 10.1016/j.cej.2014.04.057 |
| 产权排序 | [Zhang, Wei; Zhang, Gaosheng] Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, Key Lab Coastal Zone Environm Proc, Shandong 264003, Peoples R China; [Zhang, Wei; Zhang, Gaosheng] YICCAS, Res Ctr Coastal Environm Engn & Technol Shandong, Shandong 264003, Peoples R China; [Zhang, Wei] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Fu, Jun] Sino Japan Friendship Ctr Environm Protect, Beijing 100029, Peoples R China; [Zhang, Xiwang] Monash Univ, Dept Chem Engn, Clayton, Vic 3800, Australia |
| 作者部门 | 中科院海岸带环境过程与生态修复重点实验室 |
| 英文摘要 | Arsenic exists ubiquitously in the environment and has been proved to be of great harm to human health. In this study, a series of Fe-La composite (hydr)oxides were synthesized via a facile coprecipitation for effective As(V) removal from aqueous solution. A variety of techniques including BET surface area measurement, powder XRD, SEM, and XPS were employed to characterize the synthetic Fe-La composite (hydr)oxides. Fe-La composite (hydr)oxides grains were formed via aggregation of primary nanoparticles. With an increase in La content, the specific surface area of Fe-La composite (hydr)oxides decreased, but the pore diameter, the pore volume and the grain size of Fe-La composite (hydr)oxides increased gradually. Rapid As(V) adsorption on the synthesized composite oxides was achieved and the adsorption was well fitted by the pseudo-second-order equation. The adsorption isotherms could be well described by Langmuir equation and the maximal adsorption capacity of Fe-La composite (hydr)oxides can reach 368 mg/g. The As(V) removal was pH-dependent and decreased with an increase in pH value, especially in alkaline condition. Under acidic and neutral conditions, As(V) removal was mainly achieved by both precipitation and adsorption. By contrast, adsorption is the only mechanism for As(V) removal in alkaline condition. The results indicate that the Fe-La composite (hydr)oxides could be potentially attractive adsorbents for As(V) removal. (C) 2014 Elsevier B.V. All rights reserved.; Arsenic exists ubiquitously in the environment and has been proved to be of great harm to human health. In this study, a series of Fe-La composite (hydr)oxides were synthesized via a facile coprecipitation for effective As(V) removal from aqueous solution. A variety of techniques including BET surface area measurement, powder XRD, SEM, and XPS were employed to characterize the synthetic Fe-La composite (hydr)oxides. Fe-La composite (hydr)oxides grains were formed via aggregation of primary nanoparticles. With an increase in La content, the specific surface area of Fe-La composite (hydr)oxides decreased, but the pore diameter, the pore volume and the grain size of Fe-La composite (hydr)oxides increased gradually. Rapid As(V) adsorption on the synthesized composite oxides was achieved and the adsorption was well fitted by the pseudo-second-order equation. The adsorption isotherms could be well described by Langmuir equation and the maximal adsorption capacity of Fe-La composite (hydr)oxides can reach 368 mg/g. The As(V) removal was pH-dependent and decreased with an increase in pH value, especially in alkaline condition. Under acidic and neutral conditions, As(V) removal was mainly achieved by both precipitation and adsorption. By contrast, adsorption is the only mechanism for As(V) removal in alkaline condition. The results indicate that the Fe-La composite (hydr)oxides could be potentially attractive adsorbents for As(V) removal. (C) 2014 Elsevier B.V. All rights reserved. |
| 文章类型 | Article |
| 资助机构 | Engineering |
| 收录类别 | SCI |
| 语种 | 英语 |
| 关键词[WOS] | BINARY OXIDE ADSORBENT ; AQUEOUS-SOLUTIONS ; ARSENIC(III) SORPTION ; IRON HYDROXIDE ; MIXED-OXIDE ; BY-PRODUCT ; ADSORPTION ; WATER ; GROUNDWATER ; PHOSPHATE |
| 研究领域[WOS] | Engineering |
| WOS记录号 | WOS:000338802500009 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.yic.ac.cn/handle/133337/8716 |
| 专题 | 中国科学院海岸带环境过程与生态修复重点实验室 中国科学院海岸带环境过程与生态修复重点实验室_污染过程与控制实验室 |
| 通讯作者 | Zhang, GS (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, Key Lab Coastal Zone Environm Proc, 17th Chunhui Rd, Shandong 264003, Peoples R China. gszhang@yic.ac.cn |
| 作者单位 | 1.Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, Key Lab Coastal Zone Environm Proc, Shandong 264003, Peoples R China 2.YICCAS, Res Ctr Coastal Environm Engn & Technol Shandong, Shandong 264003, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Sino Japan Friendship Ctr Environm Protect, Beijing 100029, Peoples R China 5.Monash Univ, Dept Chem Engn, Clayton, Vic 3800, Australia |
| 推荐引用方式 GB/T 7714 | Zhang, Wei,Fu, Jun,Zhang, Gaosheng,et al. Enhanced arsenate removal by novel Fe-La composite (hydr)oxides synthesized via coprecipitation[J]. CHEMICAL ENGINEERING JOURNAL,2014,251:69-79. |
| APA | Zhang, Wei,Fu, Jun,Zhang, Gaosheng,Zhang, Xiwang,&Zhang, GS .(2014).Enhanced arsenate removal by novel Fe-La composite (hydr)oxides synthesized via coprecipitation.CHEMICAL ENGINEERING JOURNAL,251,69-79. |
| MLA | Zhang, Wei,et al."Enhanced arsenate removal by novel Fe-La composite (hydr)oxides synthesized via coprecipitation".CHEMICAL ENGINEERING JOURNAL 251(2014):69-79. |
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