Documents disponibles écrits par cet auteur

Design, preparation, and characterization of a novel hyper - cross - linked polyphosphamide polymer and its adsorption for phenol / Fan-Xin Zeng in Industrial & engineering chemistry research, Vol. 50 N° 20 (Octobre 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 20 (Octobre 2011) . - pp. 11614-11619 Titre : Design, preparation, and characterization of a novel hyper - cross - linked polyphosphamide polymer and its adsorption for phenol Type de document : texte imprimé Auteurs : Fan-Xin Zeng, Auteur ; Wu-Jun Liu, Auteur ; Shi-Wei Luo, Auteur Année de publication : 2011 Article en page(s) : pp. 11614-11619 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Adsorption  Preparation  Design Résumé : Polar organic compounds (POCs) are one of the main categories of pollutants in wastewater, and their effective removal is highly desirable. In this work a novel hyper-cross-linked polyphosphamide resin (HPR) with flexible structure and functional groups for POCs adsorption was synthesized and characterized by Fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM). Phenol, a typical POC, was used to test its adsorption amount. The experimental results showed that the polymer exhibited an excellent phenol adsorptive capacity of 516 mg g-1 in phenol aqueous solution, though its surface area was 14.5 m2 g-1 only. The influences of pH, contact time, and the zero point charges of adsorption were investigated. This research provides a new and effective approach to separate and recover phenols, especially at a high concentration, from wastewater. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24612386 [article] Design, preparation, and characterization of a novel hyper - cross - linked polyphosphamide polymer and its adsorption for phenol [texte imprimé] / Fan-Xin Zeng, Auteur ; Wu-Jun Liu, Auteur ; Shi-Wei Luo, Auteur . - 2011 . - pp. 11614-11619. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 20 (Octobre 2011) . - pp. 11614-11619 Mots-clés : Adsorption  Preparation  Design Résumé : Polar organic compounds (POCs) are one of the main categories of pollutants in wastewater, and their effective removal is highly desirable. In this work a novel hyper-cross-linked polyphosphamide resin (HPR) with flexible structure and functional groups for POCs adsorption was synthesized and characterized by Fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM). Phenol, a typical POC, was used to test its adsorption amount. The experimental results showed that the polymer exhibited an excellent phenol adsorptive capacity of 516 mg g-1 in phenol aqueous solution, though its surface area was 14.5 m2 g-1 only. The influences of pH, contact time, and the zero point charges of adsorption were investigated. This research provides a new and effective approach to separate and recover phenols, especially at a high concentration, from wastewater. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24612386

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