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pH-Dependent interactions between lead and typha angustifolia biomass in the biosorption process / Wu-Jun Liu in Industrial & engineering chemistry research, Vol. 50 N° 10 (Mai 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 10 (Mai 2011) . - pp. 5920-5926 Titre : pH-Dependent interactions between lead and typha angustifolia biomass in the biosorption process Type de document : texte imprimé Auteurs : Wu-Jun Liu, Auteur ; Fan-Xin Zeng, Auteur ; Jiang Hong, Auteur Année de publication : 2011 Article en page(s) : pp. 5920-5926 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Biosorption  Biomass  pH Résumé : Removal of heavy metals from wastewater by biosorption is an attractive approach. In this work, the interactions between lead and Typha angustifolia biomass, a cost-effective biosorbent, were investigated It was found that the interactions between lead and T. angustifolia biomass were complex, and the solution pH was a key factor governing such interactions. The FTIR characterization and the results of blocking experiment indicate the amino, hydroxyl, and carboxyl are the main functional groups contributing to these interactions. A synergistic mechanism involving ion exchange, complexation, and hydrogen binding was elucidated. According to this mechanism, the dominant interactions between the biomass and lead altered with the variation of pH, which was consistent with the experimental results. Additionally, a simple method was explored to estimate the contributions of different interactions between the biomass and lead. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24158888 [article] pH-Dependent interactions between lead and typha angustifolia biomass in the biosorption process [texte imprimé] / Wu-Jun Liu, Auteur ; Fan-Xin Zeng, Auteur ; Jiang Hong, Auteur . - 2011 . - pp. 5920-5926. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 10 (Mai 2011) . - pp. 5920-5926 Mots-clés : Biosorption  Biomass  pH Résumé : Removal of heavy metals from wastewater by biosorption is an attractive approach. In this work, the interactions between lead and Typha angustifolia biomass, a cost-effective biosorbent, were investigated It was found that the interactions between lead and T. angustifolia biomass were complex, and the solution pH was a key factor governing such interactions. The FTIR characterization and the results of blocking experiment indicate the amino, hydroxyl, and carboxyl are the main functional groups contributing to these interactions. A synergistic mechanism involving ion exchange, complexation, and hydrogen binding was elucidated. According to this mechanism, the dominant interactions between the biomass and lead altered with the variation of pH, which was consistent with the experimental results. Additionally, a simple method was explored to estimate the contributions of different interactions between the biomass and lead. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24158888