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Biosorption of palladium(II) from aqueous solution by moss (Racomitrium lanuginosum) biomass: equilibrium, kinetic and thermodynamic studies.
J Hazard Mater. 2009 Mar 15; 162(2-3):874-9.JH

Abstract

The biosorption potential of Racomitrium lanuginosum as aquatic moss biosorbent for the removal of Pd(II) from aqueous solution was investigated. The effects of pH, biomass dosage, contact time, and temperature on the biosorption processes were systematically studied. Experimental data were modeled by Langmuir, Freundlich and Dubinin-Radushkevich (D-R) isotherms. Langmuir isotherm model (R(2)=0.994) fitted the equilibrium data better than the Freundlich isotherm model (R(2)=0.935). The monolayer biosorption capacity of R. lanuginosum biomass for Pd(II) was found to be 37.2mg/g at pH 5. The mean free energy was calculated as 9.2 kJ/mol using the D-R isotherm model (R(2)=0.996). This result indicated that the biosorption of Pd(II) was taken place by chemical ion-exchange. The calculated thermodynamic parameters, DeltaG degrees , DeltaH degrees and DeltaS degrees showed that the biosorption of Pd(II) on R. lanuginosum biomass was feasible, spontaneous and exothermic under examined conditions. Experimental data were also tested using the biosorption kinetic models. The results showed that the biosorption processes of Pd(II) on R. lanuginosum followed well pseudo-second-order kinetics at 20-50 degrees C (R(2)=0.999).

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Authors+Show Affiliations

Sari A
Department of Chemistry, Gaziosmanpasa University, Tokat 60250, Turkey.
Mendil D
No affiliation info available
Tuzen M
No affiliation info available
Soylak M
No affiliation info available

MeSH

AbsorptionBryophytaKineticsPalladiumSolutionsThermodynamicsWater Pollutants, Chemical

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

18599209

Citation

Sari, Ahmet, et al. "Biosorption of palladium(II) From Aqueous Solution By Moss (Racomitrium Lanuginosum) Biomass: Equilibrium, Kinetic and Thermodynamic Studies." Journal of Hazardous Materials, vol. 162, no. 2-3, 2009, pp. 874-9.
Sari A, Mendil D, Tuzen M, et al. Biosorption of palladium(II) from aqueous solution by moss (Racomitrium lanuginosum) biomass: equilibrium, kinetic and thermodynamic studies. J Hazard Mater. 2009;162(2-3):874-9.
Sari, A., Mendil, D., Tuzen, M., & Soylak, M. (2009). Biosorption of palladium(II) from aqueous solution by moss (Racomitrium lanuginosum) biomass: equilibrium, kinetic and thermodynamic studies. Journal of Hazardous Materials, 162(2-3), 874-9. https://doi.org/10.1016/j.jhazmat.2008.05.112
Sari A, et al. Biosorption of palladium(II) From Aqueous Solution By Moss (Racomitrium Lanuginosum) Biomass: Equilibrium, Kinetic and Thermodynamic Studies. J Hazard Mater. 2009 Mar 15;162(2-3):874-9. PubMed PMID: 18599209.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Biosorption of palladium(II) from aqueous solution by moss (Racomitrium lanuginosum) biomass: equilibrium, kinetic and thermodynamic studies. AU - Sari,Ahmet, AU - Mendil,Durali, AU - Tuzen,Mustafa, AU - Soylak,Mustafa, Y1 - 2008/05/28/ PY - 2008/02/15/received PY - 2008/05/22/revised PY - 2008/05/22/accepted PY - 2008/7/5/pubmed PY - 2009/4/8/medline PY - 2008/7/5/entrez SP - 874 EP - 9 JF - Journal of hazardous materials JO - J Hazard Mater VL - 162 IS - 2-3 N2 - The biosorption potential of Racomitrium lanuginosum as aquatic moss biosorbent for the removal of Pd(II) from aqueous solution was investigated. The effects of pH, biomass dosage, contact time, and temperature on the biosorption processes were systematically studied. Experimental data were modeled by Langmuir, Freundlich and Dubinin-Radushkevich (D-R) isotherms. Langmuir isotherm model (R(2)=0.994) fitted the equilibrium data better than the Freundlich isotherm model (R(2)=0.935). The monolayer biosorption capacity of R. lanuginosum biomass for Pd(II) was found to be 37.2mg/g at pH 5. The mean free energy was calculated as 9.2 kJ/mol using the D-R isotherm model (R(2)=0.996). This result indicated that the biosorption of Pd(II) was taken place by chemical ion-exchange. The calculated thermodynamic parameters, DeltaG degrees , DeltaH degrees and DeltaS degrees showed that the biosorption of Pd(II) on R. lanuginosum biomass was feasible, spontaneous and exothermic under examined conditions. Experimental data were also tested using the biosorption kinetic models. The results showed that the biosorption processes of Pd(II) on R. lanuginosum followed well pseudo-second-order kinetics at 20-50 degrees C (R(2)=0.999). SN - 0304-3894 UR - https://www.unboundmedicine.com/medline/citation/18599209/Biosorption_of_palladium_II__from_aqueous_solution_by_moss__Racomitrium_lanuginosum__biomass:_equilibrium_kinetic_and_thermodynamic_studies_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(08)00809-1 DB - PRIME DP - Unbound Medicine ER -