Removal of Ni(II) from aqueous solutions using fly ash and montmorillonite

Banerjee, S.; Jayaram, R.V.

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Tytuł artykułu

Removal of Ni(II) from aqueous solutions using fly ash and montmorillonite

Autorzy

Banerjee S. , Jayaram R.V.

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Języki publikacji

Abstrakty

Adsorption of toxic metal ions like Ni(II) on heat treated montmorillonite, fly ash and impregnated fly ash was studied in terms of different parameters like initial metal ion concentrations, pH and temperature. Impregnated fly ash (IFAA1) showed much higher levels of adsorption capacity as compared to fly ash and heat-treated montmorillonite. The various rate parameters of the adsorption process have also been determined. Equilibrium adsorption model was arrived, based on Langmuir isotherm and the corresponding constants have been evaluated. Thermodynamic studies have also been carried out and values of standard free energy (AG°), enthalpy (AH°) and entropy (AS°) were calculated. The adsorption was found to be exothermic by these studies.

Słowa kluczowe

Ni(II) montmorillonite fly ash adsorption isotherm kinetics and thermodynamic parameters

nikiel montmorylonit popiół popiół lotny adsorpcja izotermiczna parametry kinetyki i termodynamiki

Wydawca

West Pomeranian University of Technology. Publishing House

Czasopismo

Polish Journal of Chemical Technology

Rocznik

2002

Tom

Vol. 4, nr 4

Strony

6--10

Opis fizyczny

Bibliogr. 25 poz., rys., tab.

Twórcy

autor

Banerjee S.

Applied Chemistry Division,Department of Chemical Technology,University of Mumbai,Matunga, Mumbai - 400019, India *To whom Correspondence should be addressed.fax No.- +91-22-414 56 14

autor

Jayaram R.V.

ssb_rvj@aplchem.udct.ernet.in

Applied Chemistry Division,Department of Chemical Technology,University of Mumbai,Matunga, Mumbai - 400019, India *To whom Correspondence should be addressed.fax No.- +91-22-414 56 14

Bibliografia

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