A comparative study of the adsorption and desorption of o-xylene onto bentonite clay and alumina

• Published in: Journal of hazardous materials Vol. 153; no. 1; pp. 852 - 859
• Main Authors: Zaitan, Hicham, Bianchi, Daniel, Achak, Ouafae, Chafik, Tarik
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01-05-2008; Elsevier
• Subjects: Adsorption; Adsorption isotherm; Air Pollutants - chemistry; Air Pollution - prevention & control; Aluminum Oxide - chemistry; Applied sciences; Bentonite - chemistry; Breakthrough curve; Chemical engineering; Dynamic adsorption; Exact sciences and technology; FTIR; Pollution; Porosity; Surface Properties; Thermogravimetry; VOCs; Xylenes - chemistry; VOCs; Dynamic adsorption; FTIR; Adsorption isotherm; Breakthrough curve; Volatile organic compound; Desorption; Modeling; Design; Adsorption; Xylene; Aromatic compound; Comparative study; Organic compounds
• ISSN: 0304-3894; 1873-3336
• DOI: 10.1016/j.jhazmat.2007.09.070

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 γ-Al
2O
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.