Adsorption of p-chlorophenol on microporous carbon by microwave activation: isotherms, kinetics and thermodynamics studies


Adsorption of p-chlorophenol on microporous carbon by microwave activation: isotherms, kinetics and thermodynamics studies

Muthanna J. Ahmeda, Samar K. Theydanb

Equilibrium isotherms, kinetics and thermodynamics of p-chlorophenol (PCP) adsorption on microporous activated carbon have been investigated. Siris seed pods (SSP), an agricultural solid waste, were utilised as a precursor for preparation of activated carbon (KAC) by microwave induced KOH activation. The yield, surface area, micropores volume, and mesopores volume of KAC were 22.48 %, 1824.88 m2/g, 0.645 cm3/g, and 0.137 cm3/g, respectively. The analysis of pore structure of KAC showed that KOH activation exhibited 82.48% micropores content. The adsorption behaviour was well described by the Langmuir isotherm model, showing a monolayer adsorption capacity of 88.32 and 338.87 mg/g on SSP and KAC, respectively. The investigation of adsorption kinetics indicated that the process closely follows the model of pseudo-second order. Results of thermodynamic studies showed exothermic and spontaneous natures of PCP adsorption under-examined conditions.

Activated Carbon, Microwave, Adsorption, Seed Pods Biomass, P-Chlorophenol

Published online 4/25/2017, 16 pages
Copyright © 2016 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: Muthanna J. Ahmeda, Samar K. Theydanb, ‘Adsorption of p-chlorophenol on microporous carbon by microwave activation: isotherms, kinetics and thermodynamics studies’, Materials Research Foundations, Vol. 15, pp 155-170, 2017


The article was published as article 6 of the book Applications of Adsorption and Ion Exchange Chromatography in Waste Water Treatment

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