Complex doping of d-block elements cobalt, nickel and cadmium in magneso-silicate composite and its use in the treatment of aqueous waste

Magneso-silicate and metal in situ doping composites have been synthesized by sol–gel technique. The structure of these composites was established by chemical analysis, X-ray diffraction, thermogravimetric, and differential thermal analyses, Fourier transform infrared spectroscopy and X-ray fluoresc...

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Bibliographic Details
Published in:Desalination and water treatment 2016-11, Vol.57 (53), p.25757-25764
Main Authors: Abou-Mesalam, M.M., Abass, M.R., Abdel-Wahab, M.A., Zakaria, E.S., Hassan, A.M., Khalil, H.F.
Format: Article
Language:English
Subjects:
Cadmium
Capacity
Cations
Chemical analysis
Cobalt
Distribution
Doping
Fourier transforms
Heavy metals
In-situ
Infrared spectroscopy
Isotherm
Isotherms
Magneso-silicate
Nickel
Nitric acid
Particulate composites
X-ray diffraction
X-ray fluorescence
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Summary:Magneso-silicate and metal in situ doping composites have been synthesized by sol–gel technique. The structure of these composites was established by chemical analysis, X-ray diffraction, thermogravimetric, and differential thermal analyses, Fourier transform infrared spectroscopy and X-ray fluorescence analysis. Magneso-silicate and in situ doping of nickel, cobalt, and cadmium composites were found to have the formulas MgSi4.26O9.53·2.17 H2O, Ni2.36Mg0.043Si2.91O·1.29 H2O, Co1.45Mg0.03Si2.7O·1.26 H2O, and CdMg0.059Si1.24O1.12·0.83 H2O, respectively. The capacities of these materials for some heavy metals such as Ni2+, Co2+, and Cd2+ were investigated and the data obtained showed that magneso-silicate has a higher capacity for the cations compared to in situ doping of heavy metal composites. Distribution coefficients in nitric acid medium have been evaluated to explore the separation potentiality of magneso-silicate for Ni2+, Co2+, and Cd2+ ions. Sorption isotherms for all cations were investigated and the data showed the applicability of Freundlich isotherm for all cases.
ISSN:1944-3986
1944-3994
1944-3986
DOI:10.1080/19443994.2016.1156031