Journal: Journal of Pharmacy Research

Article Id: JPRS-PCS-00001602
Title: Equilibrium, kinetic, spectral and thermodynamic analysis of nickel ion adsorption by Spirulina platensis in aqueous solutions
Category: Pharmaceutics
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  • Abstract

    The aqueous phase separation of toxic heavy metal ions by biosorption is an emerging field of interest from resource conservation and environmental remediation. The present study comprises of biosorption of nickel metal ions onto cyanobacteria Spirulina platensis in immobilized and non immobilized forms. Optimum pH, algal dose, metal ion concentration and time were found to be 7, 1g/100ml, 100 mg/l and 90 minutes respectively. All the three biosorbents of S. platensis obeyed both Langmuir and Freundlich isotherms. The kinetic studies showed that the biosorption rates could be better described by pseudo second order reaction. Pseudo-second-order model fits the experimental data with a very high correlation coefficient and it was greater than 0.9779 in all the cases. Negative values of Gibbs energy indicate spontaneous nature of the process in all the three cases. Fourier transform infra red (FTIR) analysis of S. platensis revealed the presence of carboxyl, hydroxyl, amino, amide and imine groups. By blocking of the groups of S. platensis the percent removal reduced further confirmed that the carboxylic group was the main group responsible for the biosorption of metal ions. S. platensis immobilized in calcium alginate matrix for the nickel ions was the best biosorbent for the five cycles when regenerated with 0.1 M EDTA and from first to fifth cycle percentage desorption was 91.4 to 88.4.

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  • About the authors and Affiliations

    Author(s) Name:

    Nitant Gaur1* and Rajesh Dhankhar2

    Affiliation(s) Name:

    1University College, Kurukshetra University, Kurukshetra, 136118, Haryana, India
    2Department of Environment-Sciences, M. D. University, Rohtak, 124001, Haryana, India

    *Corresponding author.
    Dr. Nitant Gaur
    University College,
     Kurukshetra University,
    Kurukshetra, 136118 (Haryana), India

    Received on:22-06-2014; Revised  on: 06-07-2014; Accepted on:25-08-2014

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    Nitant Gaur1* and Rajesh Dhankhar2

    Title:Equilibrium, kinetic, spectral and thermodynamic analysis of nickel ion adsorption by Spirulina platensis in aqueous solutions
    Journal:Journal of Pharmacy Research
    Page No: (1178-1184)
  • Experimental Methods Keywords

    Methodology:Equilibrium, kinetic, spectral and thermodynamic analysis,Fourier Transform Infra Red, Isotherms, Pseudo second order, Gibbs energy and Desorption.
    Research Materials:Nickel metal ions, Spirulina platensis


Nickel metal ions Spirulina platensis Biosorption Fourier Transform Infra Red Isotherms Pseudo second order Gibbs energy and Desorption.

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