Effect of natural aquatic colloids on Cu(II) and Pb(II) adsorption by   Al2O3 nanoparticles

doi:10.1016/j.cej.2013.04.010

CORC > 北京大学 > 环境科学与工程学院

	Effect of natural aquatic colloids on Cu(II) and Pb(II) adsorption by Al2O3 nanoparticles
	Sun, Weiling ; Yin, Kun ; Yu, Xiangquan
刊名	chemical engineering journal
	2013
关键词	Aquatic colloids Cu(II)/Pb(II) Aluminum oxide nanoparticles Adsorption DISSOLVED ORGANIC-MATTER METAL-OXIDE NANOPARTICLES ENDOCRINE-DISRUPTING CHEMICALS TITANIUM-DIOXIDE NANOPARTICLES CROSS-FLOW ULTRAFILTRATION IONIC-STRENGTH HUMIC-ACID AQUEOUS-SOLUTIONS TRACE-ELEMENTS HEAVY-METALS
DOI	10.1016/j.cej.2013.04.010
英文摘要	The effect of aquatic colloids on Cu(II) and Pb(II) adsorption by Al2O3 nanoparticles (NPs) was investigated, and particular attention was paid to the relationship between the composition of the colloids and metal adsorption by Al2O3 NPs. The water samples collected from the Wenyu River and the Yellow River were separated into four fractions (1-0.22 mu m, 0.22-0.006 mu m, 0.006-0.003 mu m, <0.003 mu m) using cross-flow filtration. The uptake of Cu(II) or Pb(II) by Al2O3 NPs in the dissolved solution was pH-dependent, governed mainly by the surface complexation of equivalent to AlOH and metals. Due to the differences in colloidal organic matter contents, the Cu(II) and Pb(II) adsorption onto Al2O3 NPs was promoted significantly (p < 0.05) by aquatic colloids of the Wenyu River, while different results were observed for the Yellow River. The zeta potential and particle size of Al2O3 NPs were changed due to the adsorption of aquatic colloids, which affected the metal adsorption. These findings reveal that the composition of the dissolved solution and aquatic colloids has a great effect on the metal adsorption directly through interaction with the metals and indirectly by changing the surface properties of Al2O3 NPs. Crown Copyright (c) 2013 Published by Elsevier B.V. All rights reserved.; Engineering, Environmental; Engineering, Chemical; SCI(E); EI; 2; ARTICLE; 464-473; 225
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/158310]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Sun, Weiling,Yin, Kun,Yu, Xiangquan. Effect of natural aquatic colloids on Cu(II) and Pb(II) adsorption by Al2O3 nanoparticles[J]. chemical engineering journal,2013.
APA	Sun, Weiling,Yin, Kun,&Yu, Xiangquan.(2013).Effect of natural aquatic colloids on Cu(II) and Pb(II) adsorption by Al2O3 nanoparticles.chemical engineering journal.
MLA	Sun, Weiling,et al."Effect of natural aquatic colloids on Cu(II) and Pb(II) adsorption by Al2O3 nanoparticles".chemical engineering journal (2013).