| Exceptional arsenic adsorption performance of hydrous cerium oxide nanoparticles: Part B. Integration with silica monoliths and dynamic treatment |
| W. Z. Sun; Q. Li; S. Gao; J. K. Shang
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| 2012
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| 发表期刊 | Chemical Engineering Journal
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| ISSN | 1385-8947
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| 卷号 | 185页码:136-143 |
| 摘要 | A novel composite adsorbent (SCO) was synthesized by integrating CeO2 nanoparticles into silica monoliths for the removal of arsenic from water in a dynamic flow through reactor. The silica monoliths provided 3-dimensional interconnected macropores for the effective transportation of water while a large amount of mesopores on the silica skeleton served as the sites for attachment of CeO2 nanoparticles. After impregnation and calcinations, CeO2 nanoparticles were firmly fixed on the walls of silica monoliths. The SCO composite demonstrated a superior arsenic removal performance on both lab-prepared and natural water samples. At a fast empty bed contact time of 4 min, a high breakthrough bed volume of 20,000 bv was achieved for the treatment of arsenic-contaminated natural water of similar to 80 mu g/L to meet the maximum contaminant level of arsenic at 10 mu g/L for drinking water. Even after desorption/regeneration, the composite still maintained a strong arsenic adsorption performance, which is beneficial for their potential industrial applications. (c) 2012 Published by Elsevier B.V. |
| 部门归属 | [sun, wuzhu; li, qi; gao, shian; shang, jian ku] chinese acad sci, inst met res, mat ctr water purificat, shenyang natl lab mat sci, shenyang 110016, peoples r china. [sun, wuzhu] univ sci & technol china, sch chem & mat sci, hefei 230026, anhui, peoples r china. [shang, jian ku] univ illinois, dept mat sci & engn, urbana, il 61801 usa.;shang, jk (reprint author), chinese acad sci, inst met res, mat ctr water purificat, shenyang natl lab mat sci, shenyang 110016, peoples r china.;jkshang@illinois.edu
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| 关键词 | Silica Monolith Substrate
Cerium Oxide Nanoparticles
As(Iii) And As(v)
Removal
Dynamic Treatment
Adsorption
Sol-gel System
Hierarchical Pore Structure
Phase-separation
Poly(Ethylene Oxide)
Removal
Morphology
Groundwater
Fabrication
Mechanism
Strength
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| URL | 查看原文
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| 文献类型 | 期刊论文
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| 条目标识符 | http://ir.imr.ac.cn/handle/321006/60246
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| 专题 | 中国科学院金属研究所
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推荐引用方式
GB/T 7714 |
W. Z. Sun,Q. Li,S. Gao,et al. Exceptional arsenic adsorption performance of hydrous cerium oxide nanoparticles: Part B. Integration with silica monoliths and dynamic treatment[J]. Chemical Engineering Journal,2012,185:136-143.
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| APA |
W. Z. Sun,Q. Li,S. Gao,&J. K. Shang.(2012).Exceptional arsenic adsorption performance of hydrous cerium oxide nanoparticles: Part B. Integration with silica monoliths and dynamic treatment.Chemical Engineering Journal,185,136-143.
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| MLA |
W. Z. Sun,et al."Exceptional arsenic adsorption performance of hydrous cerium oxide nanoparticles: Part B. Integration with silica monoliths and dynamic treatment".Chemical Engineering Journal 185(2012):136-143.
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