Adsorption of Ni(II) from Aqueous Solution by Sulfuric Acid and Thermally Treated Attapulgite

Jun Ren; Xiao Wei Song; Dan Xu; Dong Dong Gou; Ling Tao

doi:10.4028/www.scientific.net/AMR.1073-1076.90

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 1073-1076Adsorption of Ni(II) from Aqueous Solution by...

Adsorption of Ni(II) from Aqueous Solution by Sulfuric Acid and Thermally Treated Attapulgite

Abstract:

Adsorption of Ni (II) onto modified attapulgite was investigated with respect to temperature, initial concentration and contact time. The kinetics data related to the adsorption of nickel from aqueous solutions were in good agreement with the pseudo-second order equation in ranges of initial concentration of 20-200 mg/L, and temperature of 298-328K.The thermodynamic experiment results showed that the equilibrium adsorption isotherm was closely fitted with the Langmuir model. Enthalpy change (△H0), entropy change (△S0) and Gibbs free energy change (△G0) were calculated from the temperature dependent sorption data, and the results indicated that the sorption of Ni (II) on modified attapulgite was a spontaneous process, and the sorption was endothermic.

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Periodical:

Advanced Materials Research (Volumes 1073-1076)

Pages:

90-94

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1073-1076.90

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Online since:

December 2014

Authors:

Jun Ren*, Xiao Wei Song, Dan Xu, Dong Dong Gou, Ling Tao

Keywords:

Adsorption, Isotherms, Kinetic, Modified Attapulgite, Ni(II)

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