Kinetic, isotherm, thermodynamic, and adsorption capacity studies of magnetic Spirulina microalgae onto zinc (II)

In this study, magnetic biosorbent from Spirulina microalgae were employed as adsorbent for Zinc (II) elimination. The adsorbent characteristics were examined employing scanning electron microscopy (SEM) and the Fourier transform infrared spectrum (FTIR). The consequence of adsorption parameters suc...

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Bibliographic Details
Published in:Environmental progress 2022-03, Vol.41 (2), p.n/a
Main Authors: Azadian, Meysam, Ghanadzadeh Gilani, Hossein, Rajabi‐Kuyakhi, Hossein, Gharibipour, Nazanin
Format: Article
Language:English
Subjects:
Adsorbents
Adsorption
Algae
Aquatic microorganisms
Fourier transforms
Infrared radiation
Ion concentration
isotherm models
Isotherms
kinetics
Magnetic studies
Metal concentrations
Metal ions
Microalgae
pH effects
Scanning electron microscopy
Spirulina
Spirulina microalgae
Zinc
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Summary:In this study, magnetic biosorbent from Spirulina microalgae were employed as adsorbent for Zinc (II) elimination. The adsorbent characteristics were examined employing scanning electron microscopy (SEM) and the Fourier transform infrared spectrum (FTIR). The consequence of adsorption parameters such as initial pH, contact time, temperature, the dosage of adsorbent, and initial metal ion concentration in the solution was evaluated employing a batch method. The optimal adsorbent for Zn(II) adsorption onto Spirulina microalgae (SM) and magnetic (MSM) were obtained at pH = 6, 0.03 g/L. An equilibrium time of and 10 min was necessary for the adsorption onto SM and MSM. Freundlich and Langmuir isotherm models were applied to investigate the adsorption equilibrium data. The kinetic of the pseudo‐second‐order confirms the elimination process of zinc ions onto adsorbents. The high adsorption capacity of Zn(II) ion onto SM and MSM was 500 mg/g.
ISSN:1944-7442
1944-7450
DOI:10.1002/ep.13751