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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/12632

Title: Parametric, equilibrium, and kinetic study of the removal of salt ions from Ghanaian seawater by adsorption onto zeolite X
Authors: Kwakye-Awuah, Bright
Von-Kiti, Elizabeth
Nkrumah, Isaac
Ikyreve, Rose Erdoo
Radecka, Iza
et. al
Keywords: Desalination
Synthesis
Zeolite X
Seawater
Kinetics
Removal efficiency
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
URI: http://hdl.handle.net/123456789/12632
Appears in Collections:College of Science

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