Physico-chemical characterisation of the Douiret sand (Southern Tunisia): Valorisation for the production of Silica Gel

In order to widen the industrial uses of Douiret sand belonging to the Chenini formation (Southern Tunisia) experimental investigations have been performed to synthesized the silica gel from the natural raw material using alkaline attack, which correspond to the fusion of silica and sodium carbonate...

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Bibliographic Details
Published in:Physics procedia 2009-11, Vol.2 (3), p.1461-1467
Main Authors: Trabelsi, W., Benzina, M., Bouaziz, S.
Format: Article
Language:English
Subjects:
Attacks alkaline
Porosity
Sand
Silica gel
Specific surface
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Summary:In order to widen the industrial uses of Douiret sand belonging to the Chenini formation (Southern Tunisia) experimental investigations have been performed to synthesized the silica gel from the natural raw material using alkaline attack, which correspond to the fusion of silica and sodium carbonate together at high temperature (1060∘C). Mineralogical and physicochemical characterisation of the natural raw material and synthetic silica gel indicate that pure and very fine sized Douiret sand can be yield a very interesting silica gel product characterised by high specific surface which can reach 720m2/g and a great capacity of adsorption.
ISSN:1875-3892
1875-3892
DOI:10.1016/j.phpro.2009.11.117