Repository of Research and Investigative Information

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Ilam University of Medical Sciences

Multi-Component Adsorption of Benzene, Toluene, Ethylbenzene, and Xylene from Aqueous Solutions by Montmorillonite Modified with Tetradecyl Trimethyl Ammonium Bromide

Sun Aug 14 02:40:29 2022

(2013) Multi-Component Adsorption of Benzene, Toluene, Ethylbenzene, and Xylene from Aqueous Solutions by Montmorillonite Modified with Tetradecyl Trimethyl Ammonium Bromide. Journal of Chemistry. p. 10. ISSN 2090-9063

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Abstract

Multicomponent adsorption of benzene, toluene, ethylbenzene, and xylene (BTEX) was assessed in aqueous solutions by montmorillonite modified with tetradecyl trimethyl ammonium bromide (TTAB-Mt). Batch experiments were conducted to determine the influences of parameters including loading rates of surfactant, contact time, pH, adsorbate concentration, and temperature on the adsorption efficiency. Scanning electron microscope (SEM) and X-ray diffractometer (XRD) were used to determine the adsorbent properties. Results showed that the modification of the adsorbent via the surfactant causes structural changes of the adsorbent. It was found that the optimum adsorption condition achieves with the surfactant loading rate of 200 of the cation exchange capacity (CEC) of the adsorbent for a period of 24 h. The sorption of BTEX by TTAB-Mt was in the order of B < T < E < X . The experimental data were fitted by many kinetic and isotherm models. The results also showed that the pseudo-second-order kinetic model and Freundlich isotherm model could, respectively, be fitted to the experimental data better than other available kinetic and isotherm models. The thermodynamic study indicated that the sorption of BTEX with TTAB-Mt was achieved spontaneously and the adsorption process was endothermic as well as physical in nature. The regeneration results of the adsorbent also showed that the adsorption capacity of adsorbent after one use was 51 to 70 of original TTAB-Mt.

Item Type: Article
Creators:
CreatorsEmail
Nourmoradi, H.UNSPECIFIED
Khiadani, M.UNSPECIFIED
Nikaeen, M.UNSPECIFIED
Keywords: modified diatomite activated carbon btex sorption organo-clays bentonite removal acid surfactant kaolinite sorbents Chemistry
Divisions:
Page Range: p. 10
Journal or Publication Title: Journal of Chemistry
Journal Index: ISI
Identification Number: https://doi.org/10.1155/2013/589354
ISSN: 2090-9063
Depositing User: مهندس مهدی شریفی
URI: http://eprints.medilam.ac.ir/id/eprint/759

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