Adsorptive Removal of Pentavalent Arsenic from Aqueous Solutions by Granular Ferric Oxide
Arsenic contamination of water resources, which is characterized by strong carcinogenic and toxic impacts, is a global problem. Therefore, the present study is focused on the isotherm and kinetic studies of pentavalent arsenic As(V) adsorption with initial concentration of 1 000 µg L−1 from aqueous...
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Croatian Society of Chemical Engineers
2022-07-01
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| Series: | Chemical and Biochemical Engineering Quarterly |
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| Online Access: | http://silverstripe.fkit.hr/cabeq/assets/Uploads/02-2-2022.pdf |
| _version_ | 1811312835008921600 |
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| author | R. Zakhar J. Derco F. Čacho O. Čižmárová |
| author_facet | R. Zakhar J. Derco F. Čacho O. Čižmárová |
| author_sort | R. Zakhar |
| collection | DOAJ |
| description | Arsenic contamination of water resources, which is characterized by strong carcinogenic and toxic impacts, is a global problem. Therefore, the present study is focused on the isotherm and kinetic studies of pentavalent arsenic As(V) adsorption with initial concentration of 1 000 µg L−1 from aqueous solutions onto granular ferric oxide (GFO). Adsorption experiments were carried out by batch method, and the equilibrium and kinetic data were evaluated by the Langmuir, Freundlich, Dubinin-Radushkevich, Redlich-Peterson and Sips isotherm model, and pseudo-first and pseudo-second order kinetic model. The results obtained from this study imply that the adsorption of As(V) onto GFO was favourable, physical and multilayer process. The Sips and Redlich-Peterson isotherm and the pseudo-first order kinetic model gave the best fit to experimental data according to the values of correlation coefficient. The maximum theoretical adsorption capacity from Langmuir isotherm model was determined to be 1 900 µg g−1. In addition, the impact of different operating conditions such as As(V) initial concentration, adsorbent dose, agitation speed, pH, temperature, and presence of phosphates and silica on adsorption capacity of GFO was also investigated. As(V) was efficiently recovered from GFO by 0.1 M NaOH desorbing solution during the three adsorption-desorption cycles. |
| first_indexed | 2024-04-13T10:43:35Z |
| format | Article |
| id | doaj.art-52370a2866794ccbb6cbaf3994b63141 |
| institution | Directory Open Access Journal |
| issn | 0352-9568 1846-5153 |
| language | English |
| last_indexed | 2024-04-13T10:43:35Z |
| publishDate | 2022-07-01 |
| publisher | Croatian Society of Chemical Engineers |
| record_format | Article |
| series | Chemical and Biochemical Engineering Quarterly |
| spelling | doaj.art-52370a2866794ccbb6cbaf3994b631412022-12-22T02:49:52ZengCroatian Society of Chemical EngineersChemical and Biochemical Engineering Quarterly0352-95681846-51532022-07-0136211712810.15255/CABEQ.2021.2018Adsorptive Removal of Pentavalent Arsenic from Aqueous Solutions by Granular Ferric OxideR. Zakhar0 J. Derco1F. Čacho2O. Čižmárová3 Department of Environmental Engineering, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Radlinského 9, 812 37 Bratislava, Slovak Republic Department of Environmental Engineering, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Radlinského 9, 812 37 Bratislava, Slovak Republic Institute of Analytical Chemistry, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Radlinského 9, 812 37 Bratislava, Slovak Republic Thermo Fisher Scientific, Leškova 11, 811 04 Bratislava, Slovak RepublicArsenic contamination of water resources, which is characterized by strong carcinogenic and toxic impacts, is a global problem. Therefore, the present study is focused on the isotherm and kinetic studies of pentavalent arsenic As(V) adsorption with initial concentration of 1 000 µg L−1 from aqueous solutions onto granular ferric oxide (GFO). Adsorption experiments were carried out by batch method, and the equilibrium and kinetic data were evaluated by the Langmuir, Freundlich, Dubinin-Radushkevich, Redlich-Peterson and Sips isotherm model, and pseudo-first and pseudo-second order kinetic model. The results obtained from this study imply that the adsorption of As(V) onto GFO was favourable, physical and multilayer process. The Sips and Redlich-Peterson isotherm and the pseudo-first order kinetic model gave the best fit to experimental data according to the values of correlation coefficient. The maximum theoretical adsorption capacity from Langmuir isotherm model was determined to be 1 900 µg g−1. In addition, the impact of different operating conditions such as As(V) initial concentration, adsorbent dose, agitation speed, pH, temperature, and presence of phosphates and silica on adsorption capacity of GFO was also investigated. As(V) was efficiently recovered from GFO by 0.1 M NaOH desorbing solution during the three adsorption-desorption cycles.http://silverstripe.fkit.hr/cabeq/assets/Uploads/02-2-2022.pdfadsorptionarsenicgranular ferric oxideisotherm modelskinetic modelsregeneration |
| spellingShingle | R. Zakhar J. Derco F. Čacho O. Čižmárová Adsorptive Removal of Pentavalent Arsenic from Aqueous Solutions by Granular Ferric Oxide Chemical and Biochemical Engineering Quarterly adsorption arsenic granular ferric oxide isotherm models kinetic models regeneration |
| title | Adsorptive Removal of Pentavalent Arsenic from Aqueous Solutions by Granular Ferric Oxide |
| title_full | Adsorptive Removal of Pentavalent Arsenic from Aqueous Solutions by Granular Ferric Oxide |
| title_fullStr | Adsorptive Removal of Pentavalent Arsenic from Aqueous Solutions by Granular Ferric Oxide |
| title_full_unstemmed | Adsorptive Removal of Pentavalent Arsenic from Aqueous Solutions by Granular Ferric Oxide |
| title_short | Adsorptive Removal of Pentavalent Arsenic from Aqueous Solutions by Granular Ferric Oxide |
| title_sort | adsorptive removal of pentavalent arsenic from aqueous solutions by granular ferric oxide |
| topic | adsorption arsenic granular ferric oxide isotherm models kinetic models regeneration |
| url | http://silverstripe.fkit.hr/cabeq/assets/Uploads/02-2-2022.pdf |
| work_keys_str_mv | AT rzakhar adsorptiveremovalofpentavalentarsenicfromaqueoussolutionsbygranularferricoxide AT jderco adsorptiveremovalofpentavalentarsenicfromaqueoussolutionsbygranularferricoxide AT fcacho adsorptiveremovalofpentavalentarsenicfromaqueoussolutionsbygranularferricoxide AT ocizmarova adsorptiveremovalofpentavalentarsenicfromaqueoussolutionsbygranularferricoxide |