Staff Members - Benha University
Absorption of calcium ions on oxidized graphene sheets and study its dynamic behavior by kinetic and isothermal models
Appl. Nanosci • 2016
Publication Information
Authors
Mahmoud Fathy • Th. Abdel Moghny • Mahmoud Ahmed Mousa•
Abdel-Hameed A-A. El-Bellihi , Ahmed E. Awadallah
Keywords
Science
Journal
Appl. Nanosci
Publisher
Springer
Volume
6
Issue
Not Available
Pages
1105-1117
publication.type
International
Paper Link
Not Available
Supplementary Materials
Not Available
Abstract
Sorption of calcium ion from the hard underground water using novel oxidized graphene (GO) sheets
was studied in this paper. Physicochemical properties and
microstructure of graphene sheets were investigated using
Raman spectrometer, thermogravimetry analyzer, transmission electron microscope, scanning electron microscope. The kinetics adsorption of calcium on graphene
oxide sheets was examined using Lagergren first and second orders. The results show that the Lagergren secondorder was the best-fit model that suggests the conception
process of calcium ion adsorption on the Go sheets. For
isothermal studies, the Langmuir and Freundlich isotherm
models were used at temperatures ranging between 283 and
313 K. Thermodynamic parameters resolved at 283, 298
and 313 K indicating that the GO adsorption was
exothermic spontaneous process. Finally, the graphene
sheets show high partiality toward calcium particles and it
will be useful in softening and treatment of hard water.
was studied in this paper. Physicochemical properties and
microstructure of graphene sheets were investigated using
Raman spectrometer, thermogravimetry analyzer, transmission electron microscope, scanning electron microscope. The kinetics adsorption of calcium on graphene
oxide sheets was examined using Lagergren first and second orders. The results show that the Lagergren secondorder was the best-fit model that suggests the conception
process of calcium ion adsorption on the Go sheets. For
isothermal studies, the Langmuir and Freundlich isotherm
models were used at temperatures ranging between 283 and
313 K. Thermodynamic parameters resolved at 283, 298
and 313 K indicating that the GO adsorption was
exothermic spontaneous process. Finally, the graphene
sheets show high partiality toward calcium particles and it
will be useful in softening and treatment of hard water.