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Equilibrium and kinetic studies of acid dye adsorption on palm oil empty fruit bunch

Tahir, Norini and Abdul Majid, Zaiton (2013) Equilibrium and kinetic studies of acid dye adsorption on palm oil empty fruit bunch. Malaysian Journal of Fundamental and Applied Sciences, 9 (3). pp. 143-149. ISSN 1823-626X

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Official URL: https://mjfas.utm.my/index.php/mjfas/issue/view/11


Palm oil empty fruit bunch (POEFB), an agricultural waste, used as low-cost adsorbent for removal Acid Orange 51 (AO51) dye from aqueous solutions was studied. Batch mode experiments were carried out at room temperature (28 ± 2) °C to study the effects of contact time and initial dye concentrations (10-200 mg/L). The equilibrium adsorption data of AO51 dye on empty fruit bunch were analyzed by three isotherms, namely the Langmuir isotherm, Freundlich isotherm and Temkin isotherm model. The result indicated that the equilibrium sorption fitted well with the Freundlich isotherm, displaying higher regression coefficient, R2value. The monolayer adsorption capacity of POEFB was found to be 166.67 mg/g. The kinetic data obtained at different concentrations have been analyzed using the pseudo-first-order, pseudo-second-order and intraparticle diffusion models. It was shown that pseudo-second-order kinetic model could best describe the adsorption kinetics.

Item Type:Article
Uncontrolled Keywords:palm oil empty fruit bunch, Langmuir isotherm, adsorption kinetics
Subjects:Q Science
ID Code:40254
Deposited By: Narimah Nawil
Deposited On:19 Aug 2014 11:38
Last Modified:28 Jan 2019 11:54

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