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Sorption kinetics and equilibrium for the removal of nickel ions from aqueous phase on calcined Bofe bentonite clay.
J Hazard Mater. 2010 May 15; 177(1-3):362-71.JH

Abstract

In this paper the kinetics and dynamics of nickel adsorption on calcined Bofe bentonite clay were studied. The clay was characterized through EDX, surface area (BET) and XRD analysis. The influence of parameters (pH, amount of adsorbent, adsorbate concentration and temperature) was investigated. Kinetic models were evaluated in order to identify potential adsorption process mechanisms. The Langmuir and Freundlich models were utilized for the analysis of adsorption equilibrium. Thermodynamic parameters were assessed as a function of the process temperature. The kinetics data were better represented by the second-order model. The process was found to be strongly influenced by the factors studied. The Bofe clay removed nickel with maximum adsorption capacity of 1.91 mg metal/g of clay (20 degrees C; pH 5.3) and that the thermodynamic data indicated that the adsorption reaction is spontaneous and of an exothermal nature. The Langmuir model provided the best fit for sorption isotherms.

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Authors+Show Affiliations

Vieira MG
UNICAMP/FEQ/DTF, Campinas/SP, Brazil.
Neto AF
No affiliation info available
Gimenes ML
No affiliation info available
da Silva MG
No affiliation info available

MeSH

AdsorptionAluminum SilicatesBentoniteClayHydrogen-Ion ConcentrationKineticsNickelTemperatureThermodynamicsWater Pollutants, Chemical

Pub Type(s)

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

Language

eng

PubMed ID

20042281

Citation

Vieira, M G A., et al. "Sorption Kinetics and Equilibrium for the Removal of Nickel Ions From Aqueous Phase On Calcined Bofe Bentonite Clay." Journal of Hazardous Materials, vol. 177, no. 1-3, 2010, pp. 362-71.
Vieira MG, Neto AF, Gimenes ML, et al. Sorption kinetics and equilibrium for the removal of nickel ions from aqueous phase on calcined Bofe bentonite clay. J Hazard Mater. 2010;177(1-3):362-71.
Vieira, M. G., Neto, A. F., Gimenes, M. L., & da Silva, M. G. (2010). Sorption kinetics and equilibrium for the removal of nickel ions from aqueous phase on calcined Bofe bentonite clay. Journal of Hazardous Materials, 177(1-3), 362-71. https://doi.org/10.1016/j.jhazmat.2009.12.040
Vieira MG, et al. Sorption Kinetics and Equilibrium for the Removal of Nickel Ions From Aqueous Phase On Calcined Bofe Bentonite Clay. J Hazard Mater. 2010 May 15;177(1-3):362-71. PubMed PMID: 20042281.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Sorption kinetics and equilibrium for the removal of nickel ions from aqueous phase on calcined Bofe bentonite clay. AU - Vieira,M G A, AU - Neto,A F Almeida, AU - Gimenes,M L, AU - da Silva,M G C, Y1 - 2009/12/16/ PY - 2009/09/28/received PY - 2009/12/07/revised PY - 2009/12/07/accepted PY - 2010/1/1/entrez PY - 2010/1/1/pubmed PY - 2010/6/10/medline SP - 362 EP - 71 JF - Journal of hazardous materials JO - J Hazard Mater VL - 177 IS - 1-3 N2 - In this paper the kinetics and dynamics of nickel adsorption on calcined Bofe bentonite clay were studied. The clay was characterized through EDX, surface area (BET) and XRD analysis. The influence of parameters (pH, amount of adsorbent, adsorbate concentration and temperature) was investigated. Kinetic models were evaluated in order to identify potential adsorption process mechanisms. The Langmuir and Freundlich models were utilized for the analysis of adsorption equilibrium. Thermodynamic parameters were assessed as a function of the process temperature. The kinetics data were better represented by the second-order model. The process was found to be strongly influenced by the factors studied. The Bofe clay removed nickel with maximum adsorption capacity of 1.91 mg metal/g of clay (20 degrees C; pH 5.3) and that the thermodynamic data indicated that the adsorption reaction is spontaneous and of an exothermal nature. The Langmuir model provided the best fit for sorption isotherms. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/20042281/Sorption_kinetics_and_equilibrium_for_the_removal_of_nickel_ions_from_aqueous_phase_on_calcined_Bofe_bentonite_clay_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(09)02011-1 DB - PRIME DP - Unbound Medicine ER -