Removal of Copper(II) and Zinc(II) Ions From Aqueous Solution by Chemical Treatment of Coal Fly Ash
The aim of this study was to investigate the chemical modifications of coal fly ash (CFA) treated with HNO3 or ammonium acetate (AcNH<sub>4</sub>) or NaOH or sodium diethyldithiocarbamate (NaDDTC) as an adsorbent for the removal of copper(II) and zinc(II) ions from aqueous solution. The...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Croatian Chemical Society
2015-12-01
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| Series: | Croatica Chemica Acta |
| Online Access: | http://hrcak.srce.hr/file/221510 |
| _version_ | 1818526557352755200 |
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| author | Eleonora Sočo Jan Kalembkiewicz |
| author_facet | Eleonora Sočo Jan Kalembkiewicz |
| author_sort | Eleonora Sočo |
| collection | DOAJ |
| description | The aim of this study was to investigate the chemical modifications of coal fly ash (CFA) treated with HNO3 or ammonium acetate (AcNH<sub>4</sub>) or NaOH or sodium diethyldithiocarbamate (NaDDTC) as an adsorbent for the removal of copper(II) and zinc(II) ions from aqueous solution. The morphology of fly ash grains before and after modification was examined via X-ray diffraction (XRD) and images of scanning electron microscope (SEM). Adsorption of copper(II) and zinc(II) ions was conducted under batch process at different duration, concentrations and temperature of the suspension. Equilibrium experiments shows that the selectivity of CFA-NaOH nanoparticles towards Cu(II) ions is greater than that of Zn(II) ions, which is related to their hydrated ionic radius and first hydrolysis equilibrium constant. The adsorption isotherms were described by Langmuir and Freundlich models. Kinetic data revealed that the adsorption fits well by the pseudo-second-order rate model with high regression coefficients. Thermodynamic parameters suggested that the immobilization Cu(II) and Zn(II) ions onto CFA-NaOH is a spontaneous process. Results demonstrated that the treating coal fly ash with alkaline solution was a promising way to enhance Cu(II) and Zn(II) ions adsorption. |
| first_indexed | 2024-12-11T06:24:34Z |
| format | Article |
| id | doaj.art-37b452980abd4c179257d0336cd68851 |
| institution | Directory Open Access Journal |
| issn | 0011-1643 1334-417X |
| language | English |
| last_indexed | 2024-12-11T06:24:34Z |
| publishDate | 2015-12-01 |
| publisher | Croatian Chemical Society |
| record_format | Article |
| series | Croatica Chemica Acta |
| spelling | doaj.art-37b452980abd4c179257d0336cd688512022-12-22T01:17:42ZengCroatian Chemical SocietyCroatica Chemica Acta0011-16431334-417X2015-12-0188326727910.5562/cca2646150532Removal of Copper(II) and Zinc(II) Ions From Aqueous Solution by Chemical Treatment of Coal Fly AshEleonora Sočo0Jan Kalembkiewicz1Department of Inorganic and Analytical Chemistry, Faculty of Chemistry, Rzeszów University of Technology, 6 Powstańców Warszawy Ave., PL-959 Rzeszów, PolandDepartment of Inorganic and Analytical Chemistry, Faculty of Chemistry, Rzeszów University of Technology, 6 Powstańców Warszawy Ave., PL-959 Rzeszów, PolandThe aim of this study was to investigate the chemical modifications of coal fly ash (CFA) treated with HNO3 or ammonium acetate (AcNH<sub>4</sub>) or NaOH or sodium diethyldithiocarbamate (NaDDTC) as an adsorbent for the removal of copper(II) and zinc(II) ions from aqueous solution. The morphology of fly ash grains before and after modification was examined via X-ray diffraction (XRD) and images of scanning electron microscope (SEM). Adsorption of copper(II) and zinc(II) ions was conducted under batch process at different duration, concentrations and temperature of the suspension. Equilibrium experiments shows that the selectivity of CFA-NaOH nanoparticles towards Cu(II) ions is greater than that of Zn(II) ions, which is related to their hydrated ionic radius and first hydrolysis equilibrium constant. The adsorption isotherms were described by Langmuir and Freundlich models. Kinetic data revealed that the adsorption fits well by the pseudo-second-order rate model with high regression coefficients. Thermodynamic parameters suggested that the immobilization Cu(II) and Zn(II) ions onto CFA-NaOH is a spontaneous process. Results demonstrated that the treating coal fly ash with alkaline solution was a promising way to enhance Cu(II) and Zn(II) ions adsorption.http://hrcak.srce.hr/file/221510 |
| spellingShingle | Eleonora Sočo Jan Kalembkiewicz Removal of Copper(II) and Zinc(II) Ions From Aqueous Solution by Chemical Treatment of Coal Fly Ash Croatica Chemica Acta |
| title | Removal of Copper(II) and Zinc(II) Ions From Aqueous Solution by Chemical Treatment of Coal Fly Ash |
| title_full | Removal of Copper(II) and Zinc(II) Ions From Aqueous Solution by Chemical Treatment of Coal Fly Ash |
| title_fullStr | Removal of Copper(II) and Zinc(II) Ions From Aqueous Solution by Chemical Treatment of Coal Fly Ash |
| title_full_unstemmed | Removal of Copper(II) and Zinc(II) Ions From Aqueous Solution by Chemical Treatment of Coal Fly Ash |
| title_short | Removal of Copper(II) and Zinc(II) Ions From Aqueous Solution by Chemical Treatment of Coal Fly Ash |
| title_sort | removal of copper ii and zinc ii ions from aqueous solution by chemical treatment of coal fly ash |
| url | http://hrcak.srce.hr/file/221510 |
| work_keys_str_mv | AT eleonorasoco removalofcopperiiandzinciiionsfromaqueoussolutionbychemicaltreatmentofcoalflyash AT jankalembkiewicz removalofcopperiiandzinciiionsfromaqueoussolutionbychemicaltreatmentofcoalflyash |