Strong adsorption of arsenic species by amorphous zirconium oxide nanoparticles

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	Strong adsorption of arsenic species by amorphous zirconium oxide nanoparticles
	H. Cui; Q. Li; S. A. Gao; J. K. Shang
	2012
发表期刊	Journal of Industrial and Engineering Chemistry
ISSN	1226-086X
卷号	18 期号:4 页码:1418-1427
摘要	A novel oxide adsorbent of amorphous zirconium oxide (am-ZrO2) nanoparticles was synthesized by a simple hydrothermal process for effective arsenic removal from aqueous environment. Due to their high specific surface area (327.1 m(2)/g), large mesopore volume (0.68 cm(3)/g), and the presence of high affinity surface hydroxyl groups, am-ZrO2 nanoparticles demonstrated exceptional adsorption performance on both As(III) (arsenite) and As(V) (arsenate) without pre-treatment at near neutral condition. At pH 7, the adsorption kinetic is fast and the adsorption capacity is high (over 83 mg/g for As(III) and over 32.4 mg/g for As(V), respectively). Under low equilibrium arsenic concentrations (C-e at 0.01 mg/L, the maximum contaminant level (MCL) for arsenic in drinking water), the amount of arsenic adsorbed by am-ZrO2 nanoparticles is over 0.92 mg/g for As(III) and over 5.2 mg/g for As(V), respectively. The adsorption mechanism of arsenic species onto am-ZrO2 nanoparticles was found to follow the inner-sphere complex mechanism. Testing with arsenic contaminated natural lake water confirmed the effectiveness of these am-ZrO2 nanoparticles in removing arsenic from natural water. The immobilized am-ZrO2 nanoparticles on glass fiber cloth demonstrated an even better arsenic removal performance than dispersed am-ZrO2 nanoparticles in water, paving the way for their potential applications in water treatment facility to treat arsenic contaminated water body without pre-treatment. (C) 2012 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
部门归属	[cui, hang; li, qi; gao, shian; shang, jian ku] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [shang, jian ku] univ illinois, dept mat sci & engn, urbana, il 61801 usa.;li, q (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.;qili@imr.ac.cn
关键词	As(Iii) And As(v) Removal Amorphous Zro2 Nanoparticles Adsorption Inner-sphere Complex Mechanism Nanocrystalline Titanium-dioxide Aqueous-solution Removal Sorption Groundwater Adsorbent Water Hydroxide Mechanism As(Iii)
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/59919
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. Cui,Q. Li,S. A. Gao,et al. Strong adsorption of arsenic species by amorphous zirconium oxide nanoparticles[J]. Journal of Industrial and Engineering Chemistry,2012,18(4):1418-1427.
APA	H. Cui,Q. Li,S. A. Gao,&J. K. Shang.(2012).Strong adsorption of arsenic species by amorphous zirconium oxide nanoparticles.Journal of Industrial and Engineering Chemistry,18(4),1418-1427.
MLA	H. Cui,et al."Strong adsorption of arsenic species by amorphous zirconium oxide nanoparticles".Journal of Industrial and Engineering Chemistry 18.4(2012):1418-1427.