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Journal of Pharmaceutical Research International, ISSN: 2456-9119, ISSN: 2231-2919 (past),Vol.: 20, Issue.: 2


Langmuir, Freundlich, Temkin and Dubinin–radushkevich Isotherms Studies of Equilibrium Sorption of Ampicilin unto Montmorillonite Nanoparticles


Davoud Balarak1, Ferdos Kord Mostafapour1, Hossein Azarpira2* and Ali Joghataei3

1Health Promotion Research Center, Department of Environmental Health, School of Public Health, Zahedan University of Medical Sciences, Zahedan, Iran.

2Social Determinants of Health Research Center, Saveh University of Medical Sciences, Saveh, Iran.

3Student Research Committee, Qom University of Medical Sciences, Qom, Iran.

Article Information
(1) Rahul S. Khupse, Pharmaceutical Sciences, University of Findlay, USA.
(1) David K. Mills, Louisiana Tech University, USA.
(2) Fleming Martinez, National University of Colombia, Colombia.
(3) Selma Gomes Ferreira Leite, Federal University of Rio de Janeiro, Brasil.
Complete Peer review History: http://www.sciencedomain.org/review-history/22350


Present study was accomplished to prospect the viability of using the montmorillonite (Mon) nanoparticles as an adsorbent to remove the Ampicillin under various experimental conditions. The Physico-chemical characteristics of the studied adsorbent were surveyed. Langmuir, Freundlich, Temkin and Dubinin–Radushkevich isotherms were applied to portray the data obtained from the adsorption studies. The findings showed that the highest R2 values were related to Langmuir and Dubinin–Radushkevich isotherm models. The greatest adsorption capacity (qe) for Langmuir and Dubinin–Radushkevich isotherm models were recognized to be 134.48 mg/g and 141.22 mg/g, respectively; and the separation factor was calculated to be 0.113 which is indicative of a favorable sorption. Temkin Isotherm model clarified that the heat of sorption process was 34.61 J/mol; and the mean free energy calculated by Dubinin–Radushkevich isotherm model was anticipated to be 2.56 Kj/mol which these undoubtedly demonstrate the physisorption process for Ampicillin adsorption experiments.

Keywords :

Montmorillonite nanoparticles; ampicilin; isotherm.

Full Article - PDF    Page 1-9

DOI : 10.9734/JPRI/2017/38056

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