A comparative study of the adsorption and desorption of o-xylene onto bentonite clay and alumina.
In this paper, adsorptive performance of natural clay of bentonite type has been investigated as a potential VOC adsorbent on the basis its promising physical-chemical and morphological properties which were compared to commercial gamma-Al(2)O(3) solid. The vapour-solid adsorption isotherms of xylene were measured at different temperatures ranging from 300 to 373 K using dynamical method and the obtained data confronted to classical models such as Langmuir and Freundlich. On the other hand, the solids physico-chemical characteristics and adsorptive performances were correlated to some cost aspects because of their importance for design and engineering of adsorption plant. The results shows the interest of a local clay natural of bentonite type for treatment of VOCs emitted in working places regarding its performances and lower cost.
Zaitan
Hicham
H
Laboratoire d'Application de la Chimie à l'Environnement, Université Claude Bernard Lyon 1, Bat Raulin, Villeurbanne, France. Hicham.Zaitan@ensiacet.fr
Bianchi
Daniel
D
Achak
Ouafae
O
Chafik
Tarik
T
D000327:Adsorption; D000393:Air Pollutants / Q000737:chemistry*; D000397:Air Pollution / Q000517:prevention & control*; D000537:Aluminum Oxide / Q000737:chemistry*; D001546:Bentonite / Q000737:chemistry*; D016062:Porosity; D013499:Surface Properties; D013818:Thermogravimetry; D014992:Xylenes / Q000737:chemistry*
D000393:Air Pollutants; D014992:Xylenes; D001546:Bentonite; D000537:Aluminum Oxide; C026114:2-xylene