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Removal of Pb(II) from water by natural zeolitic tuff: kinetics and thermodynamics.
J Hazard Mater. 2012 Jan 15; 199-200:383-9.JH

Abstract

The present study was aimed at examining the ability of a natural zeolitic volcanic tuff to remove Pb(II) ions from aqueous solutions under various conditions. The effects of various parameters such as optimum adsorbent mass, contact time, pH of the medium, Pb(II) concentration, and temperature were investigated. In addition, different adsorption isotherms were obtained using concentrations of Pb(II) ions ranging from 1mg/L to 200mg/L. The adsorption process follows second-order reaction kinetics and follows the Langmuir adsorption isotherm. The thermodynamic parameters are discussed in this article, including changes in Gibbs free energy, entropy, and enthalpy, for the adsorption of Pb(II) on tuff, and it is revealed that the adsorption process was spontaneous and exothermic under natural conditions. The maximum removal efficiency of 92% was obtained at a pH of 5 with a 25-min contact time for a 10 g/L solid-to-liquid ratio and an initial heavy metal concentration of 100mg/L.

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Authors+Show Affiliations

Karatas M
Aksaray University, Engineering Faculty, Department of Environmental Engineering, 68100 Aksaray, Turkey. mkaratas33@gmail.com

MeSH

AdsorptionHydrogen-Ion ConcentrationKineticsLeadThermodynamicsZeolites

Pub Type(s)

Journal Article

Language

eng

PubMed ID

22137175

Citation

Karatas, Mustafa. "Removal of Pb(II) From Water By Natural Zeolitic Tuff: Kinetics and Thermodynamics." Journal of Hazardous Materials, vol. 199-200, 2012, pp. 383-9.
Karatas M. Removal of Pb(II) from water by natural zeolitic tuff: kinetics and thermodynamics. J Hazard Mater. 2012;199-200:383-9.
Karatas, M. (2012). Removal of Pb(II) from water by natural zeolitic tuff: kinetics and thermodynamics. Journal of Hazardous Materials, 199-200, 383-9. https://doi.org/10.1016/j.jhazmat.2011.11.035
Karatas M. Removal of Pb(II) From Water By Natural Zeolitic Tuff: Kinetics and Thermodynamics. J Hazard Mater. 2012 Jan 15;199-200:383-9. PubMed PMID: 22137175.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Removal of Pb(II) from water by natural zeolitic tuff: kinetics and thermodynamics. A1 - Karatas,Mustafa, Y1 - 2011/11/15/ PY - 2011/07/18/received PY - 2011/10/31/revised PY - 2011/11/07/accepted PY - 2011/12/6/entrez PY - 2011/12/6/pubmed PY - 2012/4/26/medline SP - 383 EP - 9 JF - Journal of hazardous materials JO - J Hazard Mater VL - 199-200 N2 - The present study was aimed at examining the ability of a natural zeolitic volcanic tuff to remove Pb(II) ions from aqueous solutions under various conditions. The effects of various parameters such as optimum adsorbent mass, contact time, pH of the medium, Pb(II) concentration, and temperature were investigated. In addition, different adsorption isotherms were obtained using concentrations of Pb(II) ions ranging from 1mg/L to 200mg/L. The adsorption process follows second-order reaction kinetics and follows the Langmuir adsorption isotherm. The thermodynamic parameters are discussed in this article, including changes in Gibbs free energy, entropy, and enthalpy, for the adsorption of Pb(II) on tuff, and it is revealed that the adsorption process was spontaneous and exothermic under natural conditions. The maximum removal efficiency of 92% was obtained at a pH of 5 with a 25-min contact time for a 10 g/L solid-to-liquid ratio and an initial heavy metal concentration of 100mg/L. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/22137175/Removal_of_Pb_II__from_water_by_natural_zeolitic_tuff:_kinetics_and_thermodynamics_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(11)01401-4 DB - PRIME DP - Unbound Medicine ER -