Exceptional arsenic adsorption performance of hydrous cerium oxide nanoparticles: Part B. Integration with silica monoliths and dynamic treatment

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	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
刊名	Chemical Engineering Journal
	2012
卷号	185 页码:136-143
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
ISSN号	1385-8947
中文摘要	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.
原文出处	://WOS:000301891100015
公开日期	2013-02-05
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/60246]
专题	金属研究所_中国科学院金属研究所
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.
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.
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.