Indian Journal of Science and Technology
Year: 2012, Volume: 5, Issue: 3, Pages: 1-8
H Karimi*, S Mousavi and B Sadeghian
Chemical Engineering Department, Gachsaran Branch, Islamic Azad University, Gachsaran, Iran [email protected]yu.ac.ir*
*Author For Correspondence
Chemical Engineering Department
Email: [email protected]*
Silver nanoparticle loaded on activated carbon were synthesized and used for the removal of methyl orange (MO) from aqueous solutions. The influence of variables such as initial solution pH, amount of adsorbent, initial MO concentration and adsorption time on its removal percentage was studied. The equilibrium adsorption isotherms have been analyzed by Langmuir, Freundlich and Tempkin models. It was found that Langmuir model has the highest correlation coefficients. The fitting experimental data to different conventional kinetic models such as pseudo-first and pseudo- second order, Elovich and intraparticle diffusion kinetic models show that adsorption follow the second-order equation in addition to intraparticle diffusion as the rate-limiting factor.
Keywords: Silver nanoparticle, Activated carbon, (Ag-NP-AC), Methyl orange (MO), Adsorption.
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