JOURNAL of the Tunisian Chemical Society

Leaching of industrial waste storage settings and the release of the organic vapor can lead to severe pollution of the water resources and atmosphere. Geomaterial barriers made from cement, bentonite and active carbon can overcome such problems. The first part of this work deals with preparation of new adsorbents able to contend against the pollutant gas outburst of the type Volatile Organic Compounds (VOCs). These geomaterials have been prepared from Douiret formation by intercalation of didodecyldimethyl ammonium bromide. This clay has a lower Aptian age and belonged to Douiret (Tataouine) area in the south of Tunisia. This intercalation allowed the improvement of porous texture of the material in question, which supports its use in adsorption of VOCs. Retention properties of such materials towards chlorobenzene have been assessed through the determination of adsorption isotherms using thermogravimetric method. Equilibrium isotherms showed clearly the high efficiency of these new adsorbents toward VOCs.

I. Jarraya, S. Fourmentin, M. Benzina

clay, organoclay, intercalation, Volatile Organic Compounds, adsorption isotherm, modelisation

Pages 139-149