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Magda A Akl
Magda A Akl
Faculty of Science,
Mansorua University
Egypt
Publications
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Research Article
Adsorption Studies of Cd (II) from Water by Acid Modified Multiwalled Carbon Nanotubes
Author(s): Magda A Akl and Ali M Abou-ElanwarMagda A Akl and Ali M Abou-Elanwar
This work aims to decorate carbon nanotubes with oxygenated functional groups for effective removal of Cadmium ions from aqueous media. For that purpose Carbon nanotubes (CNT) was oxidized by nitric acid to give MCNT- HNO3. The CNT and MCNT- HNO3 were characterized by SEM, TEM, FT-IR, Boehm titration, nitrogen adsorption–desorption analysis, point of zero charge and surface pH. The adsorption experiments of Cd(II) onto sorbents were studied using the batch technique and factors affecting the adsorption capacities of Cd(II) were investigated and discussed. The isotherm data were analyzed using Langmuir and Freundlich equations. The equilibrium data fitted well Langmuir isotherm for both CNT and MCNT- HNO3. The kinetic results were analyzed using pseudo-first order, pseudo-second order, intraparticle diffusion and the Boyd equations. The rate constants.. View More»
DOI: 10.4172/2157-7439.1000327