Author： El-Ashgar Nizam
Publisher： Taylor & Francis Ltd
ISSN： 0306-7319
Source： International Journal of Environmental and Analytical Chemistry, Vol.89, Iss.14, 2009-10, pp. : 1057-1069
Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.
Abstract
This article reports on the preparation of porous solid ethylenediaminetriacetic acid functionalised silica-gel (S-EDTA) of the general formula S-(CH2)3N(CH2COOH)-(CH2)2-N(CH2COOH)2 (where S represents [Si-O]n). This was prepared by modification of 3-(2-aminoethylaminopropyl)trimethoxysilane with ethyl chloroacetate followed by polycondensation with tetraethylorthosilicate via the sol-gel process. The immobilised ethylenediaminetriacetic acid ligand system (S-EDTA) was characterised by FTIR, 13C CS-MAS NMR and XPS spectroscopic techniques. The resulting functionalised ligand system showed high potential to extract and separate Co2+, Ni2+ and Cu2+ metal ions from aqueous samples. The saturation sorption capacities of Co2+, Ni2+ and Cu2+ metal ions were 77.6, 89.1 and 99.4 mg g-1, respectively. The optimum separation pH values were 4.5 and 4 for Co(II) and Ni(II), respectively, while a solution of 0.1 mol L-1 HNO3 (pH = 1) was used to elute Cu(II).
Related content
By Wang Qihui Chang Xijun Hu Zheng Li Dandan Tu Zhifeng
International Journal of Environmental and Analytical Chemistry, Vol. 92, Iss. 11, 2012-09 ,pp. :
Access to resources
Recommend
International Journal of Environmental and Analytical Chemistry, Vol. 82, Iss. 1, 2002-01 ,pp. :
International Journal of Environmental and Analytical Chemistry, Vol. 93, Iss. 8, 2013-07 ,pp. :
International Journal of Environmental and Analytical Chemistry, Vol. 82, Iss. 6, 2002-01 ,pp. :
By Cui Yuemei
International Journal of Environmental and Analytical Chemistry, Vol. 88, Iss. 12, 2008-10 ,pp. :