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Title: Separation of lead ions from aqueous solutions by adsorption at talc surface
Authors: Chandra, Navin
Agnihotri, Nitin
Sharma, Priya
Bhasin, Sanjeev
Amritphale, S S
Keywords: Talc surface
Lead ion
Temperature effect
Langmuir isotherm
Thermodynamic parameters
Ions separation
Issue Date: Sep-2005
Publisher: CSIR
Series/Report no.: B 01 D 15/00
Abstract: Separation of lead ions from aqueous solutions containing 5, 10, 20, 50, 100, 200 and 500 ppm lead was studied by adsorption at the surface of talc mineral of Indian origin. The effect of temperature (20, 30, 40, 50, 60, 70oC) on adsorption phenomena was studied and the data was analyzed using Langmuir isotherm. The changes in enthalpy (H), free energy (G) and entropy (S) were evaluated. The negative values of G and H indicate the adsorption of lead ions on talc surface to be spontaneous and exothermic under the experimental conditions.
Description: 674-678
ISSN: 0975-1084 (Online); 0022-4456 (Print)
Appears in Collections:JSIR Vol.64(09) [September 2005]

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