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Sorption of Cd(II), Pb(II), Cu(II), and Zn(II) complexes with nitrilotris(Methylenephosphonic) acid on polystyrene anion exchangers / Marcin Siek in Industrial & engineering chemistry research, Vol. 49 N° 10 (Mai 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 10 (Mai 2010) . - pp. 4700–4709 Titre : Sorption of Cd(II), Pb(II), Cu(II), and Zn(II) complexes with nitrilotris(Methylenephosphonic) acid on polystyrene anion exchangers Type de document : texte imprimé Auteurs : Marcin Siek, Auteur ; Dorota Kolodynska, Auteur ; Zbigniew Hubicki, Auteur Année de publication : 2010 Article en page(s) : pp. 4700–4709 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Anion  exchangers Résumé : The performance of the polystyrene anion exchangers Lewatit MonoPlus M 500, Lewatit MonoPlus M 600, Lewatit MonoPlus MP 500, Lewatit MonoPlus MP 64, and Lewatit MP 62 as well as Amberlyst A 21 was investigated for their further application in purification of wastewaters containing nitrilotris(methylenephosphonic acid) (NTMP) and heavy metal ions. The comparison involved evaluation of the sorption/desorption behavior of NTMP complexes of Cd(II), Pb(II), Cu(II), and Zn(II) on the resins with different basicity of functional groups. The batch method, in which a fixed amount of anion exchanger was contacted with the sample solution for increasing periods of time and the amount of metal ion remaining in the solution measured as a function of the elapsed time, was used to obtain information on the kinetics of species formed in the presence of added complexing agent. The effects of pH, metal(II) ion and ligand concentration, and their molar ratio on the sorption as well as type of functional groups of the anion exchangers used were determined. The sorption data were fitted to various models to obtain certain constants related to the sorption phenomena. The effect of the regeneration solution was also investigated. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901748k [article] Sorption of Cd(II), Pb(II), Cu(II), and Zn(II) complexes with nitrilotris(Methylenephosphonic) acid on polystyrene anion exchangers [texte imprimé] / Marcin Siek, Auteur ; Dorota Kolodynska, Auteur ; Zbigniew Hubicki, Auteur . - 2010 . - pp. 4700–4709. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 10 (Mai 2010) . - pp. 4700–4709 Mots-clés : Anion  exchangers Résumé : The performance of the polystyrene anion exchangers Lewatit MonoPlus M 500, Lewatit MonoPlus M 600, Lewatit MonoPlus MP 500, Lewatit MonoPlus MP 64, and Lewatit MP 62 as well as Amberlyst A 21 was investigated for their further application in purification of wastewaters containing nitrilotris(methylenephosphonic acid) (NTMP) and heavy metal ions. The comparison involved evaluation of the sorption/desorption behavior of NTMP complexes of Cd(II), Pb(II), Cu(II), and Zn(II) on the resins with different basicity of functional groups. The batch method, in which a fixed amount of anion exchanger was contacted with the sample solution for increasing periods of time and the amount of metal ion remaining in the solution measured as a function of the elapsed time, was used to obtain information on the kinetics of species formed in the presence of added complexing agent. The effects of pH, metal(II) ion and ligand concentration, and their molar ratio on the sorption as well as type of functional groups of the anion exchangers used were determined. The sorption data were fitted to various models to obtain certain constants related to the sorption phenomena. The effect of the regeneration solution was also investigated. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901748k