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3 results on '"Wang, Xue Jiang"'

2. Biosorption of cadmium(II) and lead(II) ions from aqueous solutions onto dried activated sludge

Author

Wang, Xue-Jiang, Xia, Si-Qing, Chen, Ling, Zhao, Jian-Fu, Chovelon, Jean-Marc, Jaffrezic-Renault, Nicole, Ampère (AMPERE), École Centrale de Lyon (ECL), Université de Lyon-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Centre de génie électrique de Lyon (CEGELY), Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-École Centrale de Lyon (ECL), Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon, and Ampère, Publications

Subjects
MECHANISM, lead, ADSORPTION, cadmium, [SPI.NRJ]Engineering Sciences [physics]/Electric power, adsorption isotherm, CARBON, REMOVAL, NICKEL(II), BINDING, activated sludge, KINETICS, [SPI.NRJ] Engineering Sciences [physics]/Electric power, biosorption
Abstract

International audience; The removal of heavy-metal ions from aqueous solutions by using dried activated sludge has been investigated in batch systems. Effect of solution pH, initial metal ion concentration, and temperature were determined. The results of the kinetic studies showed that the uptake processes of the two metal ions(Cd(II) and Pb(II)) followed the pseudo-second-order rate expression. The equilibrium data fitted very well to both the Langmuir and Freundlich adsorption models. The FT-IR analysis showed that the main mechanism of Cd(II) and Pb(II) biosorption onto dried activated sludge was their binding with amide I group.

Published
2006

3. Adsorption mechanism of phenolic compounds from aqueous solution on hypercrosslinked polymeric adsorbent.

Author

Wang Xue-jiang, Zhao Jian-fu, Xia Si-qing, Li Ai-min, and Chen Ling

Subjects
*ADSORPTION (Chemistry), *PHENOLS, *SALICYLIC acid, *ATMOSPHERIC temperature, *HYDROGEN bonding, *SEPARATION (Technology)
Abstract

The adsorption of two phenols, namely, phenol and salicylic acid (SA) onto a water-compatible hypercrosslinked polymeric resin (NJ-8) were studied in terms of pseudo-second-order and first order mechanisms for chemical sorption as well as an intraparticle diffusion mechanism process. Kinetic analysis showed that the intraparticle diffusion process was the essential rate-controlling step. The activation energies of sorption have also been evaluated with the pseudo-second-order and intraparticle diffusion constants, respectively. Adsorption equilibrium data were well fitted by the Langmuir, Freundlich and Redlich-Peterson isotherms. Adsorption was exothermic and basically of a type of transition between physical and chemical character. The sorption capacity was higher for SA due to its more hydrophobic. Phenol has a higher adsorption enthalpy since it could form stronger hydrogen bonding on NJ-8. [ABSTRACT FROM AUTHOR]

Published
2004

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