Application of Glycyrrhiza glabra root as a novel adsorbent in the removal of toluene vapors: Equilibrium, kinetic, and thermodynamic study

Mohammadi-Moghadam, F. and Amin, M. and Khiadani, M. and Momenbeik, F. and Nourmoradi, H. and Hatamipour, M. (2013) Application of Glycyrrhiza glabra root as a novel adsorbent in the removal of toluene vapors: Equilibrium, kinetic, and thermodynamic study. Journal of Environmental and Public Health, 2013.

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Abstract

The aim of this paper is to investigate the removal of toluene from gaseous solution through Glycyrrhiza glabra root (GGR) as a waste material. The batch adsorption experiments were conducted at various conditions including contact time, adsorbate concentration, humidity, and temperature. The adsorption capacity was increased by raising the sorbent humidity up to 50 percent. The adsorption of toluene was also increased over contact time by 12 h when the sorbent was saturated. The pseudo-second-order kinetic model and Freundlich model fitted the adsorption data better than other kinetic and isotherm models, respectively. The Dubinin-Radushkevich (D-R) isotherm also showed that the sorption by GGR was physical in nature. The results of the thermodynamic analysis illustrated that the adsorption process is exothermic. GGR as a novel adsorbent has not previously been used for the adsorption of pollutants. © 2013 Fazel Mohammadi-Moghadam et al.

Item Type: Article
Additional Information: cited By 0
Uncontrolled Keywords: adsorbent; toluene; solvent; toluene, adsorption; adsorption kinetics; article; concentration (parameters); equilibrium constant; Glycyrrhiza glabra; humidity; nonhuman; plant root; pollutant; priority journal; temperature; thermodynamics; vapor; waste component removal; chemistry; gas; Glycyrrhiza; human; isolation and purification; kinetics; theoretical model, Adsorption; Gases; Glycyrrhiza; Humans; Kinetics; Models, Theoretical; Plant Roots; Solvents; Thermodynamics; Toluene
Subjects: WA Public Health > Public Health Education WA.18 > WA 30 Social, Economic, and Environmental factor in public health
WA Public Health > WA 30 Social, Economic, and Environmental factor in public health
Divisions: Faculty of Health > Department of Environmental Health
Depositing User: zahra bagheri .
Date Deposited: 08 Aug 2017 07:09
Last Modified: 08 Aug 2017 07:09
URI: http://eprints.skums.ac.ir/id/eprint/2754

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