Adsorption of Anionic Dyes on Montmorillonite Modified with Polyhydroxo Complexes of Aluminium and Iron
S. TS. KHANKHASAEVA1, S. V. BADMAEVA1, E. TS. DASHINAMZHILOVA1, L. V. BRYZGALOVA1 and A. A. RYAZANTSEV2
1Baikal Institute of Nature Management, Siberian Branch of the Russian Academy of Sciences, Ul. Sakhyanovoy 6, Ulan Ude 670047 (Russia)
E-mail: shan@binm.bscnet.ru
2Siberian Transport University,
Ul. D. Kovalchuk 191, Novosibirsk 630090 (Russia)
E-mail: raastu@online.sinor.ru
Pages: 287-294
Abstract
The sorbents with layered-columnar structure were obtained on the basis of polyhydroxo complexes of aluminium and iron and the montmorillonite clay from the Mukhor-Talinskoye deposit. The texture characteristics of the sorbents were determined by means of low-temperature nitrogen adsorption and XPA. Their adsorption characteristics in aqueous solutions with respect to different anionic dyes were investigated. It was established that modification with polyhydroxo complexes of aluminium and iron causes an increase in the adsorption capacity of montmorillonite with respect to anionic dyes due to an increase in total specific surface and the number of anion-exchange centres.
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