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Biosorption of nickel from aqueous solutions by Acacia leucocephala bark: Kinetics and equilibrium studies.
Colloids Surf B Biointerfaces. 2009 Nov 01; 74(1):260-5.CS

Abstract

The biosorption of nickel(II) ions from aqueous solution by Acacia leucocephala bark was studied in a batch adsorption system as a function of pH, initial metal ion concentration, adsorbent dosage, contact time and temperature. The maximum Ni(II) adsorption was obtained at pH 5. Further, the biosorbents were characterized by Fourier Transformer Infrared Spectroscopy (FTIR). The experimental data were analysed using three sorption kinetic models viz., the pseudo-first- and second-order equations and the intraparticle diffusion model. Results show that the pseudo-second-order equation provides the best correlation for the biosorption process. The equilibrium nature of Ni(II) adsorption at different temperatures of 30, 40 and 50 degrees C have been described by the Langmuir and Freundlich isotherm models. The equilibrium data fit well Langmuir isotherm. The monolayer adsorption capacity of A. leucocephala bark as obtained from Langmuir isotherm at 30 degrees C was found to be 294.1mg/g. The Chi-square (chi(2)) and Sum of the square errors (SSE) tests were also carried out to find the best fit adsorption isotherm and kinetic model. Isotherms have been used to determine thermodynamic parameters of the process, viz., free energy change (DeltaG degrees), enthalpy change (DeltaH degrees), and entropy change (DeltaS degrees) were calculated indicating that this system was a spontaneous and endothermic process. Present investigation emphasized that A. leucocephala bark may be utilized as a low cost adsorbent for nickel removal.

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Authors+Show Affiliations

Subbaiah MV
Biopolymers and Thermophysical Laboratories, Department of Chemistry, Sri Venkateswara University, Tirupati 517 502, A.P., India.
Vijaya Y
No affiliation info available
Kumar NS
No affiliation info available
Reddy AS
No affiliation info available
Krishnaiah A
No affiliation info available

MeSH

AcaciaAdsorptionBiodegradation, EnvironmentalDiffusionHydrogen-Ion ConcentrationKineticsModels, ChemicalNickelPlant BarkSolutionsSpectroscopy, Fourier Transform InfraredTemperatureTime Factors

Pub Type(s)

Journal Article

Language

eng

PubMed ID

19716275

Citation

Subbaiah, M Venkata, et al. "Biosorption of Nickel From Aqueous Solutions By Acacia Leucocephala Bark: Kinetics and Equilibrium Studies." Colloids and Surfaces. B, Biointerfaces, vol. 74, no. 1, 2009, pp. 260-5.
Subbaiah MV, Vijaya Y, Kumar NS, et al. Biosorption of nickel from aqueous solutions by Acacia leucocephala bark: Kinetics and equilibrium studies. Colloids Surf B Biointerfaces. 2009;74(1):260-5.
Subbaiah, M. V., Vijaya, Y., Kumar, N. S., Reddy, A. S., & Krishnaiah, A. (2009). Biosorption of nickel from aqueous solutions by Acacia leucocephala bark: Kinetics and equilibrium studies. Colloids and Surfaces. B, Biointerfaces, 74(1), 260-5. https://doi.org/10.1016/j.colsurfb.2009.07.028
Subbaiah MV, et al. Biosorption of Nickel From Aqueous Solutions By Acacia Leucocephala Bark: Kinetics and Equilibrium Studies. Colloids Surf B Biointerfaces. 2009 Nov 1;74(1):260-5. PubMed PMID: 19716275.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Biosorption of nickel from aqueous solutions by Acacia leucocephala bark: Kinetics and equilibrium studies. AU - Subbaiah,M Venkata, AU - Vijaya,Y, AU - Kumar,N Siva, AU - Reddy,A Subba, AU - Krishnaiah,A, Y1 - 2009/07/30/ PY - 2009/06/16/received PY - 2009/07/10/revised PY - 2009/07/22/accepted PY - 2009/9/1/entrez PY - 2009/9/1/pubmed PY - 2009/12/16/medline SP - 260 EP - 5 JF - Colloids and surfaces. B, Biointerfaces JO - Colloids Surf B Biointerfaces VL - 74 IS - 1 N2 - The biosorption of nickel(II) ions from aqueous solution by Acacia leucocephala bark was studied in a batch adsorption system as a function of pH, initial metal ion concentration, adsorbent dosage, contact time and temperature. The maximum Ni(II) adsorption was obtained at pH 5. Further, the biosorbents were characterized by Fourier Transformer Infrared Spectroscopy (FTIR). The experimental data were analysed using three sorption kinetic models viz., the pseudo-first- and second-order equations and the intraparticle diffusion model. Results show that the pseudo-second-order equation provides the best correlation for the biosorption process. The equilibrium nature of Ni(II) adsorption at different temperatures of 30, 40 and 50 degrees C have been described by the Langmuir and Freundlich isotherm models. The equilibrium data fit well Langmuir isotherm. The monolayer adsorption capacity of A. leucocephala bark as obtained from Langmuir isotherm at 30 degrees C was found to be 294.1mg/g. The Chi-square (chi(2)) and Sum of the square errors (SSE) tests were also carried out to find the best fit adsorption isotherm and kinetic model. Isotherms have been used to determine thermodynamic parameters of the process, viz., free energy change (DeltaG degrees), enthalpy change (DeltaH degrees), and entropy change (DeltaS degrees) were calculated indicating that this system was a spontaneous and endothermic process. Present investigation emphasized that A. leucocephala bark may be utilized as a low cost adsorbent for nickel removal. SN - 1873-4367 UR - https://www.unboundmedicine.com/medline/citation/19716275/Biosorption_of_nickel_from_aqueous_solutions_by_Acacia_leucocephala_bark:_Kinetics_and_equilibrium_studies_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0927-7765(09)00326-9 DB - PRIME DP - Unbound Medicine ER -