Adsorption of 17 beta-estradiol by multi-walled carbon nanotubes in   natural waters with or without aquatic colloids

doi:10.1016/j.cej.2014.07.087

CORC > 北京大学 > 环境科学与工程学院

	Adsorption of 17 beta-estradiol by multi-walled carbon nanotubes in natural waters with or without aquatic colloids
	Sun, Weiling ; Zhou, Kun
刊名	chemical engineering journal
	2014
关键词	Adsorption Aquatic colloids Carbon nanotubes 17 beta-estradiol Endocrine disrupting chemicals ENDOCRINE-DISRUPTING CHEMICALS CROSS-FLOW ULTRAFILTRATION DISSOLVED ORGANIC-MATTER ESTROGENIC COMPOUNDS AROMATIC-COMPOUNDS CU(II) ADSORPTION AQUEOUS-SOLUTION HUMIC SUBSTANCE WASTE-WATER SOUTH CHINA
DOI	10.1016/j.cej.2014.07.087
英文摘要	The adsorption of 17 beta-estradiol (E2) by multi-walled carbon nanotubes (MWCNTs) was investigated under environmentally relevant conditions. Six different surface water samples were collected in different areas of China. The effects of aquatic colloids on E2 adsorption by MWCNTs were estimated by separating the colloids using cross-flow filtration. The results show that, in the absence of aquatic colloids, the distribution coefficient (K-d) for E2 adsorption by MWCNTs shows strong correlation with the zeta potential of the MWCNTs and the fluorescence intensities of the water samples, indicating that the binding between dissolved organic matter and E2 and the increasing negative charges of MWCNTs inhibits the E2 adsorption by MWCNTs. In the presence of aquatic colloids, the K-d values for E2 adsorption by MWCNTs are negatively affected by various factors simultaneously, including the colloid content, the intensities of two typical fluorescence peaks, total organic carbon content, conductivity, and zeta potential of MWCNTs. The binding of aquatic colloids and MWCNTs, which was shown using transmission electron microscopy images, may inhibit or promote E2 adsorption by blocking or providing the adsorption sites for E2. These two effects may counteract and result in different effects of various aquatic colloids on E2 adsorption by MWCNTs. (C) 2014 Elsevier B.V. All rights reserved.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000343388700022&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Engineering, Environmental; Engineering, Chemical; SCI(E); EI; 7; ARTICLE; wlsun@pku.edu.cn; 185-193; 258
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/158214]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Sun, Weiling,Zhou, Kun. Adsorption of 17 beta-estradiol by multi-walled carbon nanotubes in natural waters with or without aquatic colloids[J]. chemical engineering journal,2014.
APA	Sun, Weiling,&Zhou, Kun.(2014).Adsorption of 17 beta-estradiol by multi-walled carbon nanotubes in natural waters with or without aquatic colloids.chemical engineering journal.
MLA	Sun, Weiling,et al."Adsorption of 17 beta-estradiol by multi-walled carbon nanotubes in natural waters with or without aquatic colloids".chemical engineering journal (2014).