Optimised activation of bentonite for toluene adsorption

Amari, Abdelfattah and Chlendi, Mohamed and Gannouni, Abdelaziz and Bellagi, Ahmed (2010) Optimised activation of bentonite for toluene adsorption. Applied Clay Science, 47 (3-4). pp. 457-461. ISSN 0169-1317

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Abstract

Acid-activation of bentonite was optimised to prepare an effective adsorbent of toluene. The activated bentonite was obtained with a specific surface area of 195m2/g, a pore volume of about 0.46 cm3/g and a most frequent pore size of 62 Å. Compared to the raw bentonite, the adsorption of toluene onto acid-activated bentonite was increased from 66 mg/g to 197 mg/g. Vapor–solid adsorption isotherms of toluene were measured at 120 °C, 140 °C, 160 °C and 182 °C using an inverse gas chromatography. The experimental data were correlated with different adsorption isotherm models such as Langmuir, Freundlich, Langmuir–Freundlich and Toth models. Only the Langmuir–Freundlich equation provided good fit to the experimental data.

Item Type: Article
Subjects: Chemical Engineering
Divisions: College Of Engineering > Chemical Engineering
Depositing User: Abdelfattah Amari
Date Deposited: 29 Oct 2017 14:38
Last Modified: 29 Oct 2017 14:38
URI: http://eprints.kku.edu.sa/id/eprint/1321

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