A Comparison Study on the Removal of Phenol From Aqueous Solution Using Organomodified Bentonite and Commercial Activated Carbon

The potential of bentonite modified with cationic surfactant (CTAB-Bent) and commercial Activated Carbon (AC) for the removal of phenol removal was assessed. Batch kinetics and isotherm studies were carried out to evaluate the effects of contact time (t), phenol initial concentration (C0), adsorbent...

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Main Authors: Mostafa Leili, Javad Faradmal, Farzaneh Kosravian, Mahdieh Heydari
Format: Article
Language:English
Published: Hamadan University of Medical Sciences 2015-06-01
Series:Avicenna Journal of Environmental Health Engineering
Online Access:http://dx.doi.org/10.17795/ajehe-2698
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spelling doaj-f1f4fdaca8f441e5956ee4db70a0f6ec2020-11-24T22:59:47ZengHamadan University of Medical SciencesAvicenna Journal of Environmental Health Engineering2423-45832015-06-012110.17795/ajehe-2698A Comparison Study on the Removal of Phenol From Aqueous Solution Using Organomodified Bentonite and Commercial Activated CarbonMostafa Leili0Javad Faradmal1Farzaneh Kosravian2Mahdieh Heydari3Department of Environmental Health Engineering, School of Public Health and Student Research Center, Hamadan University of Medical Sciences, Hamadan, IR IranDepartment of Biostatistics and Epidemiology, School of Public Health, Hamadan University of Medical Sciences, Hamadan, IR IranDepartment of Environmental Health Engineering, School of Public Health, Hamadan University of Medical Sciences, Hamadan, IR IranDepartment of Environmental Health Engineering, School of Public Health, Hamadan University of Medical Sciences, Hamadan, IR IranThe potential of bentonite modified with cationic surfactant (CTAB-Bent) and commercial Activated Carbon (AC) for the removal of phenol removal was assessed. Batch kinetics and isotherm studies were carried out to evaluate the effects of contact time (t), phenol initial concentration (C0), adsorbent dose (Cads), and pH of the solutions. Kinetics and isotherm of the adsorption were also determined using the most frequent models. The results of the study showed that increasing C0 could result in the increase of adsorption capacity of both types of adsorbents. The optimum pHs for CTAB-Bent and AC were determined as 10 and 8, respectively. The equilibrium data of the phenol adsorption from the aqueous solutions was well fitted by the Langmuir isotherm models. The kinetics study revealed that pseudo-second-order kinetics gives better description of adsorption process. The adsorption capacities, as deduced from the adsorption isotherm were 22.68 and 112.36 mg/g for CTAB-Bent and activated carbon, respectively. However, considering the market price of these adsorbents, low-cost modified bentonite can be a promising adsorption technology and an alternative adsorbent to commercial activated carbon in the future.http://dx.doi.org/10.17795/ajehe-2698
collection DOAJ
language English
format Article
sources DOAJ
author Mostafa Leili
Javad Faradmal
Farzaneh Kosravian
Mahdieh Heydari
spellingShingle Mostafa Leili
Javad Faradmal
Farzaneh Kosravian
Mahdieh Heydari
A Comparison Study on the Removal of Phenol From Aqueous Solution Using Organomodified Bentonite and Commercial Activated Carbon
Avicenna Journal of Environmental Health Engineering
author_facet Mostafa Leili
Javad Faradmal
Farzaneh Kosravian
Mahdieh Heydari
author_sort Mostafa Leili
title A Comparison Study on the Removal of Phenol From Aqueous Solution Using Organomodified Bentonite and Commercial Activated Carbon
title_short A Comparison Study on the Removal of Phenol From Aqueous Solution Using Organomodified Bentonite and Commercial Activated Carbon
title_full A Comparison Study on the Removal of Phenol From Aqueous Solution Using Organomodified Bentonite and Commercial Activated Carbon
title_fullStr A Comparison Study on the Removal of Phenol From Aqueous Solution Using Organomodified Bentonite and Commercial Activated Carbon
title_full_unstemmed A Comparison Study on the Removal of Phenol From Aqueous Solution Using Organomodified Bentonite and Commercial Activated Carbon
title_sort comparison study on the removal of phenol from aqueous solution using organomodified bentonite and commercial activated carbon
publisher Hamadan University of Medical Sciences
series Avicenna Journal of Environmental Health Engineering
issn 2423-4583
publishDate 2015-06-01
description The potential of bentonite modified with cationic surfactant (CTAB-Bent) and commercial Activated Carbon (AC) for the removal of phenol removal was assessed. Batch kinetics and isotherm studies were carried out to evaluate the effects of contact time (t), phenol initial concentration (C0), adsorbent dose (Cads), and pH of the solutions. Kinetics and isotherm of the adsorption were also determined using the most frequent models. The results of the study showed that increasing C0 could result in the increase of adsorption capacity of both types of adsorbents. The optimum pHs for CTAB-Bent and AC were determined as 10 and 8, respectively. The equilibrium data of the phenol adsorption from the aqueous solutions was well fitted by the Langmuir isotherm models. The kinetics study revealed that pseudo-second-order kinetics gives better description of adsorption process. The adsorption capacities, as deduced from the adsorption isotherm were 22.68 and 112.36 mg/g for CTAB-Bent and activated carbon, respectively. However, considering the market price of these adsorbents, low-cost modified bentonite can be a promising adsorption technology and an alternative adsorbent to commercial activated carbon in the future.
url http://dx.doi.org/10.17795/ajehe-2698
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