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Malachite green adsorption by rattan sawdust: isotherm, kinetic and mechanism modeling.
J Hazard Mater. 2008 Nov 30; 159(2-3):574-9.JH

Abstract

In this work, the adsorption of malachite green (MG) on rattan sawdust (RSD) was studied at 30 degrees C. The results indicated that RSD can be used as a low-cost adsorbent for the removal of MG dye from aqueous solutions. Equilibrium data were analyzed by two isotherms, namely the Freundlich isotherm and the Langmuir isotherm. The best fit to the data was obtained with the Langmuir isotherm. The monolayer adsorption capacity of RSD was found to be 62.71 mg/g. The adsorption kinetics can be predicted by the pseudo-first-order model. The mechanism of adsorption was also studied. It was found that for a short time period the rate of adsorption is controlled by film diffusion. However, at longer adsorption times, pore-diffusion controls the rate of adsorption. The amount adsorbed on the outer surface was estimated from the time where film-diffusion stops controlling the adsorption rate.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Hameed BH
School of Chemical Engineering, Engineering Campus, Universiti Sains Malaysia, 14300 Nibong Tebal, Penang, Malaysia. chbassim@eng.usm.my
El-Khaiary MI
No affiliation info available

MeSH

AdsorptionDiffusionDustHydrogen-Ion ConcentrationIndustrial WasteKineticsModels, ChemicalPorosityRosaniline DyesThermodynamicsWood

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

18387735

Citation

Hameed, B H., and M I. El-Khaiary. "Malachite Green Adsorption By Rattan Sawdust: Isotherm, Kinetic and Mechanism Modeling." Journal of Hazardous Materials, vol. 159, no. 2-3, 2008, pp. 574-9.
Hameed BH, El-Khaiary MI. Malachite green adsorption by rattan sawdust: isotherm, kinetic and mechanism modeling. J Hazard Mater. 2008;159(2-3):574-9.
Hameed, B. H., & El-Khaiary, M. I. (2008). Malachite green adsorption by rattan sawdust: isotherm, kinetic and mechanism modeling. Journal of Hazardous Materials, 159(2-3), 574-9. https://doi.org/10.1016/j.jhazmat.2008.02.054
Hameed BH, El-Khaiary MI. Malachite Green Adsorption By Rattan Sawdust: Isotherm, Kinetic and Mechanism Modeling. J Hazard Mater. 2008 Nov 30;159(2-3):574-9. PubMed PMID: 18387735.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Malachite green adsorption by rattan sawdust: isotherm, kinetic and mechanism modeling. AU - Hameed,B H, AU - El-Khaiary,M I, Y1 - 2008/02/23/ PY - 2007/12/31/received PY - 2008/02/17/revised PY - 2008/02/19/accepted PY - 2008/4/5/pubmed PY - 2009/1/30/medline PY - 2008/4/5/entrez SP - 574 EP - 9 JF - Journal of hazardous materials JO - J Hazard Mater VL - 159 IS - 2-3 N2 - In this work, the adsorption of malachite green (MG) on rattan sawdust (RSD) was studied at 30 degrees C. The results indicated that RSD can be used as a low-cost adsorbent for the removal of MG dye from aqueous solutions. Equilibrium data were analyzed by two isotherms, namely the Freundlich isotherm and the Langmuir isotherm. The best fit to the data was obtained with the Langmuir isotherm. The monolayer adsorption capacity of RSD was found to be 62.71 mg/g. The adsorption kinetics can be predicted by the pseudo-first-order model. The mechanism of adsorption was also studied. It was found that for a short time period the rate of adsorption is controlled by film diffusion. However, at longer adsorption times, pore-diffusion controls the rate of adsorption. The amount adsorbed on the outer surface was estimated from the time where film-diffusion stops controlling the adsorption rate. SN - 0304-3894 UR - https://www.unboundmedicine.com/medline/citation/18387735/Malachite_green_adsorption_by_rattan_sawdust:_isotherm_kinetic_and_mechanism_modeling_ DB - PRIME DP - Unbound Medicine ER -