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Trimethylamine-modified lignophenol for the recovery of precious metals / Durga Parajuli in Industrial & engineering chemistry research, Vol. 48 N° 23 (Décembre 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 23 (Décembre 2009) . - pp. 10163–10168 Titre : Trimethylamine-modified lignophenol for the recovery of precious metals Type de document : texte imprimé Auteurs : Durga Parajuli, Auteur ; Koichi Hirota, Auteur ; Katsutoshi Inoue, Auteur Année de publication : 2010 Article en page(s) : pp. 10163–10168 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Trimethylamine-Modified--Lignophenol--Recovery--Precious--Metals Résumé : A quaternary amine-type sorbent has been prepared by the immobilization of trimethylamine group onto the cross-linked lignophenol matrix. The sorption behavior for a number of metal ions was studied in hydrochloric acid medium. From the batch test of individual metal ion as well as the mixture solution containing equal molar concentration of various metal ions, the sorbent was found to hold selectivity for Au(III), Pd(II), and Pt(IV) ions only with negligible sorption for other metal ions like Cu(II), Co(II), Fe(III), Ni(II), and Zn(II). The sorption kinetics was studied at 30, 50, and 65 °C and elucidated the order of sorption of Au(III), Pd(II), and Pt(IV) and from the values of rate constants at different temperatures, the energy of activation has been evaluated. The sorption isotherm study revealed the Langmuir type sorption and from the Langmuir charts the maximum loading capacity of Au(III), Pd(II), and Pt(IV) has been evaluated. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801829w [article] Trimethylamine-modified lignophenol for the recovery of precious metals [texte imprimé] / Durga Parajuli, Auteur ; Koichi Hirota, Auteur ; Katsutoshi Inoue, Auteur . - 2010 . - pp. 10163–10168. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 23 (Décembre 2009) . - pp. 10163–10168 Mots-clés : Trimethylamine-Modified--Lignophenol--Recovery--Precious--Metals Résumé : A quaternary amine-type sorbent has been prepared by the immobilization of trimethylamine group onto the cross-linked lignophenol matrix. The sorption behavior for a number of metal ions was studied in hydrochloric acid medium. From the batch test of individual metal ion as well as the mixture solution containing equal molar concentration of various metal ions, the sorbent was found to hold selectivity for Au(III), Pd(II), and Pt(IV) ions only with negligible sorption for other metal ions like Cu(II), Co(II), Fe(III), Ni(II), and Zn(II). The sorption kinetics was studied at 30, 50, and 65 °C and elucidated the order of sorption of Au(III), Pd(II), and Pt(IV) and from the values of rate constants at different temperatures, the energy of activation has been evaluated. The sorption isotherm study revealed the Langmuir type sorption and from the Langmuir charts the maximum loading capacity of Au(III), Pd(II), and Pt(IV) has been evaluated. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801829w