文献类型：期刊文献

英文题名：Environmental condition effects on radionuclide 64Cu(II) sequestration to a novel composite: Polyaniline grafted multiwalled carbon nanotubes

作者：Sheng, Guodong[1,2]; Li, Yimin[1]; Dong, Huaping[1]; Shao, Dadong[2]

机构：[1] College of Chemistry and Chemical Engineering, Shaoxing University, No. 508 Huancheng West Road, Shaoxing 312000, China; [2] Institute of Plasma Physics, Chinese Academy of Sciences, P.O. Box 1126, Hefei 230031, China

年份：2012

卷号：293

期号：3

起止页码：797

外文期刊名：Journal of Radioanalytical and Nuclear Chemistry

收录：EI(收录号：20242716635234)、Scopus(收录号：2-s2.0-84876264999)

语种：英文

外文关键词：Adsorption isotherms - Biological materials - Copper compounds - Cost effectiveness - Grafting (chemical) - Ionic strength - Multiwalled carbon nanotubes (MWCN) - Polyaniline - Wastewater treatment - Yarn

外文摘要：This work examines the sequestration of 64Cu(II) by sorption process onto plasma-induced polyaniline (PANI)-grafted multiwalled carbon nanotubes (denoted as MWCNTs/PANI) prepared by an plasma-induced grafting technique. The role of a variety of environmental conditions such as pH, ionic strength, natural organic matter (NOM) in the sorption of 64Cu(II) onto MWCNTs/PANI is studied. The results indicate that the sorption is strongly dependent on pH but independent of ionic strength. A positive effect of NOM on 64Cu(II) sorption is found at pH 7.5. The sorption isotherms in the absence and presence of NOM can be better described by Freundlich model than Langmuir model. Sorption isotherms of 64Cu(II) at higher initial NOM concentrations are higher than those at lower NOM concentrations. The thermodynamic data calculated from temperature-dependent sorption suggest that the sorption is spontaneous and enhanced at higher temperature. Results of this work suggest that MWCNTs/PANI may be a promising candidate for cost-effective treatments of 64Cu(II)-contaminated wastewaters. ? 2012 Akadémiai Kiadó, Budapest, Hungary.