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|Title: ||Parametric, equilibrium, and kinetic study of the removal of salt ions from Ghanaian seawater by adsorption onto zeolite X|
|Authors: ||Kwakye-Awuah, Bright|
Ikyreve, Rose Erdoo
|Issue Date: ||5-Jan-2016|
|Publisher: ||Taylor & Francis|
|Citation: ||Bright Kwakye-Awuah, Elizabeth Von-Kiti, Isaac Nkrumah, Rose Erdoo Ikyreve, Iza Radecka & C. Williams (2016): Parametric, equilibrium, and kinetic study of the removal of salt ions from Ghanaian seawater by adsorption onto zeolite X, Desalination and Water Treatment, DOI: 10.1080/19443994.2015.1128361|
|Abstract: ||Zeolite X was synthesized in the laboratory and was characterized using X-ray diffraction,
scanning electron microscopy, thermogravimetric analysis, energy dispersive X-ray spectrometer,
and Fourier transformed infrared spectrometry. Desalination activity of zeolite X
was investigated by the ion-exchange process. The pH of the seawater prior to desalination
analysis was 7.87 ± 0.03 through the period of the investigation. The conductivity of the seawater
was found to be 16.2 ± 0.01 mS/cm. Effect of time on ion removal was measured.
Removal efficiencies of ions showed a trend of Ca2+ > K+ > Mg2+ > Na+
. Equilibrium data
were fitted by Langmuir and Freundlich isotherms and parameters were evaluated using
these models. Adsorption capacities obtained followed the order Ca2+ > K+ > Mg2+ > Na+
with R2 values K+ > Na+ > Ca2+ > Mg2+ for both Langmuir and Freundlich parameters.
Equilibrium kinetic data were analyzed using adsorption kinetic models: pseudo-first-order
and pseudo-second-order kinetic models. A linear regression method was used to estimate
the adsorption and kinetic parameters. The R2 values obtained followed the order
K+ > Mg2+ > Ca2+ > Na+ for both pseudo-first- and pseudo-second-order kinetic models.
Zeolite X has attractive features as an adsorbent for desalination of seawater.|
|Description: ||An article published by Taylor and Francis and also available at dx.doi.org/10.1080/19443994.2015.1128361|
|Appears in Collections:||College of Science|
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