Modified Vermiculites Study by Various Physicochemical Methods

N.P. Shapkin; V.I. Razov; I.G. Khalʻchenko; V.I. Mayorov; A.L. Shkuratov; V.O. Trukhin; V.V. Kotochentsev

doi:10.4028/www.scientific.net/AMM.752-753.257

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 752-753Modified Vermiculites Study by Various...

Modified Vermiculites Study by Various Physicochemical Methods

Abstract:

Kovdor (Karelia) deposite vermiculites modified by acid of different concentrations and chitosan were studied using positron annihilation lifetime spectroscopy, measuring apparent density, dye adsorption, nitrogen adsorption by BET and porometry. It has been shown that after acidizing vermiculite density changes comparing to the samples’ density depending on the acid concentration. The density increases with the increasing acid concentration. Internal volume of the micropores and the value of maximum sorption of brilliant green change directly proportional to the density of the modified vermiculite.

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Periodical:

Applied Mechanics and Materials (Volumes 752-753)

Pages:

257-262

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.752-753.257

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Online since:

April 2015

Authors:

N.P. Shapkin*, V.I. Razov, I.G. Khalʻchenko, V.I. Mayorov, A.L. Shkuratov, V.O. Trukhin, V.V. Kotochentsev

Keywords:

Chitosan, Density, Dye Adsorption, Nitrogen Adsorption, Porometry, Positron Annihilation Lifetime Spectroscopy (PALS), Vermiculite

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