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Kinetics and equilibrium studies of malachite green adsorption on rice straw-derived char.
J Hazard Mater. 2008 May 01; 153(1-2):701-8.JH

Abstract

In this work, the potential feasibility of rice straw-derived char (RSC) for removal of C.I. Basic Green 4 (malachite green (MG)), a cationic dye from aqueous solution was investigated. The isotherm parameters were estimated by non-linear regression analysis. The equilibrium process was described well by the Langmuir isotherm model. The maximum RSC sorption capacity was found to be 148.74 mg/L at 30 degrees C. The kinetics of MG sorption on RSC followed the Lagergren's pseudo-first-order model and the overall rate of dye uptake was found to be controlled by external mass transfer at the beginning of adsorption, while intraparticle diffusion controlled the overall rate of adsorption at a later stage. The results indicated that RSC was an attractive adsorbent for removing basic dye from aqueous solutions.

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Authors+Show Affiliations

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

MeSH

AdsorptionColoring AgentsFood-Processing IndustryHydrogen-Ion ConcentrationKineticsOryzaRosaniline DyesWaste Disposal, FluidWaste ProductsWater Pollutants, ChemicalWater Purification

Pub Type(s)

Journal Article

Language

eng

PubMed ID

17942219

Citation

Hameed, B H., and M I. El-Khaiary. "Kinetics and Equilibrium Studies of Malachite Green Adsorption On Rice Straw-derived Char." Journal of Hazardous Materials, vol. 153, no. 1-2, 2008, pp. 701-8.
Hameed BH, El-Khaiary MI. Kinetics and equilibrium studies of malachite green adsorption on rice straw-derived char. J Hazard Mater. 2008;153(1-2):701-8.
Hameed, B. H., & El-Khaiary, M. I. (2008). Kinetics and equilibrium studies of malachite green adsorption on rice straw-derived char. Journal of Hazardous Materials, 153(1-2), 701-8.
Hameed BH, El-Khaiary MI. Kinetics and Equilibrium Studies of Malachite Green Adsorption On Rice Straw-derived Char. J Hazard Mater. 2008 May 1;153(1-2):701-8. PubMed PMID: 17942219.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Kinetics and equilibrium studies of malachite green adsorption on rice straw-derived char. AU - Hameed,B H, AU - El-Khaiary,M I, Y1 - 2007/09/08/ PY - 2007/07/16/received PY - 2007/08/31/revised PY - 2007/09/03/accepted PY - 2007/10/19/pubmed PY - 2008/7/3/medline PY - 2007/10/19/entrez SP - 701 EP - 8 JF - Journal of hazardous materials JO - J Hazard Mater VL - 153 IS - 1-2 N2 - In this work, the potential feasibility of rice straw-derived char (RSC) for removal of C.I. Basic Green 4 (malachite green (MG)), a cationic dye from aqueous solution was investigated. The isotherm parameters were estimated by non-linear regression analysis. The equilibrium process was described well by the Langmuir isotherm model. The maximum RSC sorption capacity was found to be 148.74 mg/L at 30 degrees C. The kinetics of MG sorption on RSC followed the Lagergren's pseudo-first-order model and the overall rate of dye uptake was found to be controlled by external mass transfer at the beginning of adsorption, while intraparticle diffusion controlled the overall rate of adsorption at a later stage. The results indicated that RSC was an attractive adsorbent for removing basic dye from aqueous solutions. SN - 0304-3894 UR - https://www.unboundmedicine.com/medline/citation/17942219/Kinetics_and_equilibrium_studies_of_malachite_green_adsorption_on_rice_straw_derived_char_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(07)01300-3 DB - PRIME DP - Unbound Medicine ER -