Kinetics and Adsorption Ions of Heavy Metal by Modified Alumino-Silicates

Abstract:

Adsorption isotherms of Ni (II) and Cu (II) ions by alumino-silicates, modified with N, N'-bis (3-triethoxysilylpropyl) thiocarbamide (BTM-3), and HCl, were obtained. The adsorption kinetics of heavy metal ions is studied, using the kinetic pseudo-first and pseudo-second order models. It is shown that, when alumino-silicates are modified, the rate and energy of adsorption increase. It is established that the kinetics of the adsorption of the studied ions is best described by a pseudo-second order model. The maximum value of the adsorption rate constant of 33.7∙10^-5 g/ (mmol min) corresponds to nickel (II) ions for alumino-silicates, modified with HCl. The maximum value of the adsorption rate constant value of 2.91∙10^-5 g/ (mmol min) for alumino-silicates, modified with BTM-3, corresponds to Cu (II) ions.

• Periodical: Solid State Phenomena (Volume 316)
• Pages: 170-174
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.316.170
• Online since: April 2021
• Authors: Elena G. Filatova*, Yury N. Pozhidaev
• Keywords: Adsorption, Adsorption Kinetics, HCl, Modified Alumino-Silicates, N, N'-Bis(3-Triethoxysilyl-Propyl) Thiocarbamide (BTM-3), Ni(II) and Cu(II) Ions, Pseudo-First, Pseudo-Second

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