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Determination of the equilibrium, kinetic and thermodynamic parameters of adsorption of copper(II) ions onto seeds of Capsicum annuum.
J Hazard Mater. 2005 Sep 30; 124(1-3):200-8.JH

Abstract

Adsorption of copper ions onto Capsicum annuum (red pepper) seeds was investigated with the variation in the parameters of pH, contact time, adsorbent and copper(II) concentrations and temperature. The nature of the possible adsorbent and metal ion interactions was examined by the FTIR technique. The copper(II) adsorption equilibrium was attained within 60 min. Adsorption of copper(II) ions onto C. annuum seeds followed by the Langmuir, Freundlich and Dubinin-Radushkevich (D-R) isotherm models. Maximum adsorption capacity (q(max)) of copper(II) ions onto red pepper seeds was 4.47x10(-4) molg(-1) at 50 degrees C. Three kinetic models including the pseudo-first-order, pseudo-second-order and intraparticle diffusion equations were selected to follow the adsorption process. Kinetic parameters such as rate constants, equilibrium adsorption capacities and related correlation coefficients, for each kinetic model were calculated and discussed. It was indicated that the adsorption of copper(II) ions onto C. annuum seeds could be described by the pseudo-second-order kinetic model and also followed the intraparticle diffusion model up to 60 min, but diffusion is not only the rate controlling step. Thermodynamics parameters such as the change of free energy, enthalpy and entropy were also evaluated for the adsorption of copper(II) ions onto C. annuum seeds.

Authors+Show Affiliations

Ozcan A
Department of Chemistry, Faculty of Science, Anadolu University, 26470 Eskişehir, Turkey. aozcan@anadolu.edu.tr
Ozcan AS
No affiliation info available
Tunali S
No affiliation info available
Akar T
No affiliation info available
Kiran I
No affiliation info available

MeSH

CapsicumCopperHydrogen-Ion ConcentrationKineticsOsmolar ConcentrationSeedsSpectroscopy, Fourier Transform InfraredTemperatureThermodynamicsWaterWater Pollutants, ChemicalWater Pollution, Chemical

Pub Type(s)

Evaluation Study
Journal Article

Language

eng

PubMed ID

15990228

Citation

Ozcan, Adnan, et al. "Determination of the Equilibrium, Kinetic and Thermodynamic Parameters of Adsorption of copper(II) Ions Onto Seeds of Capsicum Annuum." Journal of Hazardous Materials, vol. 124, no. 1-3, 2005, pp. 200-8.
Ozcan A, Ozcan AS, Tunali S, et al. Determination of the equilibrium, kinetic and thermodynamic parameters of adsorption of copper(II) ions onto seeds of Capsicum annuum. J Hazard Mater. 2005;124(1-3):200-8.
Ozcan, A., Ozcan, A. S., Tunali, S., Akar, T., & Kiran, I. (2005). Determination of the equilibrium, kinetic and thermodynamic parameters of adsorption of copper(II) ions onto seeds of Capsicum annuum. Journal of Hazardous Materials, 124(1-3), 200-8.
Ozcan A, et al. Determination of the Equilibrium, Kinetic and Thermodynamic Parameters of Adsorption of copper(II) Ions Onto Seeds of Capsicum Annuum. J Hazard Mater. 2005 Sep 30;124(1-3):200-8. PubMed PMID: 15990228.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Determination of the equilibrium, kinetic and thermodynamic parameters of adsorption of copper(II) ions onto seeds of Capsicum annuum. AU - Ozcan,Adnan, AU - Ozcan,A Safa, AU - Tunali,Sibel, AU - Akar,Tamer, AU - Kiran,Ismail, PY - 2005/02/23/received PY - 2005/05/04/revised PY - 2005/05/07/accepted PY - 2005/7/2/pubmed PY - 2006/1/18/medline PY - 2005/7/2/entrez SP - 200 EP - 8 JF - Journal of hazardous materials JO - J Hazard Mater VL - 124 IS - 1-3 N2 - Adsorption of copper ions onto Capsicum annuum (red pepper) seeds was investigated with the variation in the parameters of pH, contact time, adsorbent and copper(II) concentrations and temperature. The nature of the possible adsorbent and metal ion interactions was examined by the FTIR technique. The copper(II) adsorption equilibrium was attained within 60 min. Adsorption of copper(II) ions onto C. annuum seeds followed by the Langmuir, Freundlich and Dubinin-Radushkevich (D-R) isotherm models. Maximum adsorption capacity (q(max)) of copper(II) ions onto red pepper seeds was 4.47x10(-4) molg(-1) at 50 degrees C. Three kinetic models including the pseudo-first-order, pseudo-second-order and intraparticle diffusion equations were selected to follow the adsorption process. Kinetic parameters such as rate constants, equilibrium adsorption capacities and related correlation coefficients, for each kinetic model were calculated and discussed. It was indicated that the adsorption of copper(II) ions onto C. annuum seeds could be described by the pseudo-second-order kinetic model and also followed the intraparticle diffusion model up to 60 min, but diffusion is not only the rate controlling step. Thermodynamics parameters such as the change of free energy, enthalpy and entropy were also evaluated for the adsorption of copper(II) ions onto C. annuum seeds. SN - 0304-3894 UR - https://www.unboundmedicine.com/medline/citation/15990228/Determination_of_the_equilibrium_kinetic_and_thermodynamic_parameters_of_adsorption_of_copper_II__ions_onto_seeds_of_Capsicum_annuum_ DB - PRIME DP - Unbound Medicine ER -