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Removal of direct blue-106 dye from aqueous solution using new activated carbons developed from pomegranate peel: adsorption equilibrium and kinetics.
J Hazard Mater. 2009 Jun 15; 165(1-3):52-62.JH

Abstract

The use of cheap, high efficiency and ecofriendly adsorbent has been studied as an alternative source of activated carbon for the removal of dyes from wastewater. This study investigates the use of activated carbons prepared from pomegranate peel for the removal of direct blue dye from aqueous solution. A series of experiments were conducted in a batch system to assess the effect of the system variables, i.e. initial pH, temperature, initial dye concentration adsorbent dosage and contact time. The results showed that the adsorption of direct blue dye was maximal at pH 2, as the amount of adsorbent increased, the percentage of dye removal increased accordingly but it decreased with the increase in initial dye concentration and solution temperature. The adsorption kinetics was found to follow pseudo-second-order rate kinetic model, with a good correlation (R(2)>0.99) and intra-particle diffusion as one of the rate determining steps. Langmuir, Freundlich, Temkin, Dubinin-RadushKevich (D-R) and Harkins-Jura isotherms were used to analyze the equilibrium data at different temperatures. In addition, various thermodynamic parameters, such as standard Gibbs free energy (DeltaG degrees), standard enthalpy (DeltaH degrees), standard entropy (DeltaS degrees), and the activation energy (E(a)) have been calculated. The adsorption process of direct blue dye onto different activated carbons prepared from pomegranate peel was found to be spontaneous and exothermic process. The findings of this investigation suggest that the physical sorption plays a role in controlling the sorption rate.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Amin NK
Chemical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria, Egypt. nkamalamin@yahoo.com

MeSH

AdsorptionAzo CompoundsCharcoalHydrogen-Ion ConcentrationKineticsLythraceaePlant StructuresTemperatureThermodynamicsWater Pollutants, ChemicalWater Purification

Pub Type(s)

Journal Article

Language

eng

PubMed ID

18986765

Citation

Amin, Nevine Kamal. "Removal of Direct Blue-106 Dye From Aqueous Solution Using New Activated Carbons Developed From Pomegranate Peel: Adsorption Equilibrium and Kinetics." Journal of Hazardous Materials, vol. 165, no. 1-3, 2009, pp. 52-62.
Amin NK. Removal of direct blue-106 dye from aqueous solution using new activated carbons developed from pomegranate peel: adsorption equilibrium and kinetics. J Hazard Mater. 2009;165(1-3):52-62.
Amin, N. K. (2009). Removal of direct blue-106 dye from aqueous solution using new activated carbons developed from pomegranate peel: adsorption equilibrium and kinetics. Journal of Hazardous Materials, 165(1-3), 52-62. https://doi.org/10.1016/j.jhazmat.2008.09.067
Amin NK. Removal of Direct Blue-106 Dye From Aqueous Solution Using New Activated Carbons Developed From Pomegranate Peel: Adsorption Equilibrium and Kinetics. J Hazard Mater. 2009 Jun 15;165(1-3):52-62. PubMed PMID: 18986765.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Removal of direct blue-106 dye from aqueous solution using new activated carbons developed from pomegranate peel: adsorption equilibrium and kinetics. A1 - Amin,Nevine Kamal, Y1 - 2008/09/26/ PY - 2008/05/17/received PY - 2008/08/12/revised PY - 2008/09/19/accepted PY - 2008/11/7/pubmed PY - 2009/7/8/medline PY - 2008/11/7/entrez SP - 52 EP - 62 JF - Journal of hazardous materials JO - J Hazard Mater VL - 165 IS - 1-3 N2 - The use of cheap, high efficiency and ecofriendly adsorbent has been studied as an alternative source of activated carbon for the removal of dyes from wastewater. This study investigates the use of activated carbons prepared from pomegranate peel for the removal of direct blue dye from aqueous solution. A series of experiments were conducted in a batch system to assess the effect of the system variables, i.e. initial pH, temperature, initial dye concentration adsorbent dosage and contact time. The results showed that the adsorption of direct blue dye was maximal at pH 2, as the amount of adsorbent increased, the percentage of dye removal increased accordingly but it decreased with the increase in initial dye concentration and solution temperature. The adsorption kinetics was found to follow pseudo-second-order rate kinetic model, with a good correlation (R(2)>0.99) and intra-particle diffusion as one of the rate determining steps. Langmuir, Freundlich, Temkin, Dubinin-RadushKevich (D-R) and Harkins-Jura isotherms were used to analyze the equilibrium data at different temperatures. In addition, various thermodynamic parameters, such as standard Gibbs free energy (DeltaG degrees), standard enthalpy (DeltaH degrees), standard entropy (DeltaS degrees), and the activation energy (E(a)) have been calculated. The adsorption process of direct blue dye onto different activated carbons prepared from pomegranate peel was found to be spontaneous and exothermic process. The findings of this investigation suggest that the physical sorption plays a role in controlling the sorption rate. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/18986765/Removal_of_direct_blue_106_dye_from_aqueous_solution_using_new_activated_carbons_developed_from_pomegranate_peel:_adsorption_equilibrium_and_kinetics_ DB - PRIME DP - Unbound Medicine ER -