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Phosphate Sequestration From Aqueous Solutions Using A Zeolite in The Zinc Form.
Lenin Loayza
Universidad Técnica Particular de Loja: Universidad Tecnica Particular de Loja
Corresponding Author
ORCiD: https://orcid.org/0000-0003-2750-1748
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This work is licensed under a CC BY 4.0 License. Read Full License
This work evaluated the ability of a modified zeolite to adsorb phosphates in aqueous solution. The zeolite used for this study was a modified faujasite impregnated with zinc chloride (Z-Zn) on its surface. The experiments were carried out in different stages. Adsorption was performed at different pH of the solution and the zeolitized material was found to be favorable for phosphate adsorption. The adsorption kinetics occurred after 240 minutes and reach the equilbrium, determining chemisorption reactions with a fit of the particular diffusion model ( Dp ) and pseudo second order, the Langmuir model was best adjusted through the isotherms. The adsorption and desorption process occurs best in the presence of HCl, the formation of residual phosphorous in the fractionation stage evidenced that the highest percentage was bound to metals such as Fe and Al.
Keywords
phosphate, adsorption, zinc, zeolite, kinetic, isotherm
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This is a preprint. It has not completed peer review.
Research
Phosphate Sequestration From Aqueous Solutions Using A Zeolite in The Zinc Form.
Lenin Loayza
Universidad Técnica Particular de Loja: Universidad Tecnica Particular de Loja
Corresponding Author
ORCiD: https://orcid.org/0000-0003-2750-1748
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
History
CURRENT STATUS: Posted
Version 1
Posted 18 Sep, 2020
No community comments so far
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
Subject Areas
Environmental Chemistry
License:
This work is licensed under a CC BY 4.0 License. Read Full License
This work evaluated the ability of a modified zeolite to adsorb phosphates in aqueous solution. The zeolite used for this study was a modified faujasite impregnated with zinc chloride (Z-Zn) on its surface. The experiments were carried out in different stages. Adsorption was performed at different pH of the solution and the zeolitized material was found to be favorable for phosphate adsorption. The adsorption kinetics occurred after 240 minutes and reach the equilbrium, determining chemisorption reactions with a fit of the particular diffusion model ( Dp ) and pseudo second order, the Langmuir model was best adjusted through the isotherms. The adsorption and desorption process occurs best in the presence of HCl, the formation of residual phosphorous in the fractionation stage evidenced that the highest percentage was bound to metals such as Fe and Al.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Due to technical limitations, full-text HTML conversion of this manuscript could not be completed. However, the manuscript can be downloaded and accessed as a PDF.