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Adsorption of Ag, Cu and Hg from aqueous solutions using expanded perlite.
J Hazard Mater. 2010 May 15; 177(1-3):950-5.JH

Abstract

The aim of the present work was to investigate the ability of expanded perlite (EP) to remove of silver, copper and mercury ions from aqueous solutions. Batch adsorption experiments were carried out and the effect of pH, adsorbent dosage, contact time and temperature of solution on the removal process has been investigated. The optimum pH for the adsorption was found to be 6.5. Adsorption of these metal ions reached their equilibrium concentration in 120, 240 and 180 min for Ag (I), Cu (II) and Hg (II) ions, respectively. Experimental data were also evaluated in terms of kinetic characteristics of adsorption and it was found that adsorption process for these metal ions followed well pseudo-second-order kinetics. Using Langmuir isotherm model, maximum adsorption capacity of EP was found to be 8.46, 1.95 and 0.35 mg/g for Ag (I), Cu (II) and Hg (II) ions, respectively. Finally, the thermodynamic parameters including, the change of free energy (DeltaG degrees), enthalpy (DeltaH degrees) and entropy (DeltaS degrees) of adsorption were calculated for each metal ion. The results showed that the adsorption of these metal ions on EP was feasible and exothermic at 20-50 degrees C.

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Authors+Show Affiliations

Ghassabzadeh H
Department of Chemical Engineering, Tarbiat Modarres University, PO Box 14115-143, Tehran, Iran. h.ghassabzadeh@gmail.com
Mohadespour A
No affiliation info available
Torab-Mostaedi M
No affiliation info available
Zaheri P
No affiliation info available
Maragheh MG
No affiliation info available
Taheri H
No affiliation info available

MeSH

AdsorptionAluminum OxideCopperKineticsMercuryMetals, HeavySilicon DioxideSilverSolutionsThermodynamicsWater Pollutants, ChemicalWater Purification

Pub Type(s)

Journal Article

Language

eng

PubMed ID

20096505

Citation

Ghassabzadeh, Hamid, et al. "Adsorption of Ag, Cu and Hg From Aqueous Solutions Using Expanded Perlite." Journal of Hazardous Materials, vol. 177, no. 1-3, 2010, pp. 950-5.
Ghassabzadeh H, Mohadespour A, Torab-Mostaedi M, et al. Adsorption of Ag, Cu and Hg from aqueous solutions using expanded perlite. J Hazard Mater. 2010;177(1-3):950-5.
Ghassabzadeh, H., Mohadespour, A., Torab-Mostaedi, M., Zaheri, P., Maragheh, M. G., & Taheri, H. (2010). Adsorption of Ag, Cu and Hg from aqueous solutions using expanded perlite. Journal of Hazardous Materials, 177(1-3), 950-5. https://doi.org/10.1016/j.jhazmat.2010.01.010
Ghassabzadeh H, et al. Adsorption of Ag, Cu and Hg From Aqueous Solutions Using Expanded Perlite. J Hazard Mater. 2010 May 15;177(1-3):950-5. PubMed PMID: 20096505.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Adsorption of Ag, Cu and Hg from aqueous solutions using expanded perlite. AU - Ghassabzadeh,Hamid, AU - Mohadespour,Ahmad, AU - Torab-Mostaedi,Meisam, AU - Zaheri,Parisa, AU - Maragheh,Mohammad Ghannadi, AU - Taheri,Hossein, Y1 - 2010/01/11/ PY - 2009/10/21/received PY - 2010/01/02/revised PY - 2010/01/04/accepted PY - 2010/1/26/entrez PY - 2010/1/26/pubmed PY - 2010/6/10/medline SP - 950 EP - 5 JF - Journal of hazardous materials JO - J Hazard Mater VL - 177 IS - 1-3 N2 - The aim of the present work was to investigate the ability of expanded perlite (EP) to remove of silver, copper and mercury ions from aqueous solutions. Batch adsorption experiments were carried out and the effect of pH, adsorbent dosage, contact time and temperature of solution on the removal process has been investigated. The optimum pH for the adsorption was found to be 6.5. Adsorption of these metal ions reached their equilibrium concentration in 120, 240 and 180 min for Ag (I), Cu (II) and Hg (II) ions, respectively. Experimental data were also evaluated in terms of kinetic characteristics of adsorption and it was found that adsorption process for these metal ions followed well pseudo-second-order kinetics. Using Langmuir isotherm model, maximum adsorption capacity of EP was found to be 8.46, 1.95 and 0.35 mg/g for Ag (I), Cu (II) and Hg (II) ions, respectively. Finally, the thermodynamic parameters including, the change of free energy (DeltaG degrees), enthalpy (DeltaH degrees) and entropy (DeltaS degrees) of adsorption were calculated for each metal ion. The results showed that the adsorption of these metal ions on EP was feasible and exothermic at 20-50 degrees C. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/20096505/Adsorption_of_Ag_Cu_and_Hg_from_aqueous_solutions_using_expanded_perlite_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(10)00026-9 DB - PRIME DP - Unbound Medicine ER -