ADSORPTION OF TOLUENE ON BENTONITES MODIFIED BY DODECYLTRIMETHYLAMMONIUM BROMIDE

Autor:	F. Sekrane, M. Rabiller-Baudry, A. K. Benabbou, Z. Bouberka, Zoubir Derriche
Rok vydání:	2011
Předmět:	chemistry.chemical_compound Adsorption Adsorption kinetics Diffusion process Chemistry General Chemical Engineering Diffusion Inorganic chemistry Bentonite General Chemistry Dodecyltrimethylammonium bromide Toluene
Zdroj:	Chemical Engineering Communications. 198:1093-1110
ISSN:	1563-5201 0098-6445
Popis:	The adsorption of toluene was studied by using various types of adsorbents (Na+- and Al3+-bentonite) modified by dodecyltrimethylammonium bromide (DTAB). The characterization of these new sorbing matrices by XRD and IR indicates that DTAB tallow interacted with bentonite and increased the interlayer spacing of the clay with double-layered formation. Adsorption of toluene on modified bentonites was characterized by linear isotherms with no limitation of adsorption within the concentration range studied, thus indicating a mechanism of adsorption due to partition. Adsorption was fast and favored by a slightly acid medium. Pseudo-first-order, pseudo-second-order, the Elovich equation, and intra-particle diffusion models were used to fit the experimental data. The adsorption kinetic of toluene was described by the pseudo-first order onto DTAB-Na-bent, and pseudo-second order onto DTAB-Al-bent. The intra-particle diffusion process was identified as the main mechanism controlling the rate of toluene adsorption. ...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::bc3e1a340a202072f5ebf57de9c9a37c https://doi.org/10.1080/00986445.2011.552032 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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