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Removal of Benzene and Toluene from Synthetic Wastewater by Adsorption onto Magnetic Zeolitic Imidazole Framework Nanocomposites
Considering the risk associated with exposure to benzene and toluene in water resources, researchers have been motivated to conduct studies to remove them from aqueous solutions. Thus, by performing the present study, the potential of Fe(3)O(4)/zeolite imidazolate framework nanoparticles (Fe(3)O(4)@...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9457738/ https://www.ncbi.nlm.nih.gov/pubmed/36080086 http://dx.doi.org/10.3390/nano12173049 |
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author | Kyzas, George Z. McKay, Gordon Al-Musawi, Tariq J. Salehi, Sabereh Balarak, Davoud |
author_facet | Kyzas, George Z. McKay, Gordon Al-Musawi, Tariq J. Salehi, Sabereh Balarak, Davoud |
author_sort | Kyzas, George Z. |
collection | PubMed |
description | Considering the risk associated with exposure to benzene and toluene in water resources, researchers have been motivated to conduct studies to remove them from aqueous solutions. Thus, by performing the present study, the potential of Fe(3)O(4)/zeolite imidazolate framework nanoparticles (Fe(3)O(4)@ZIF-8) was evaluated for the adsorption of benzene and toluene. Accordingly, the solution pH, Fe(3)O(4)@ZIF-8 dosage, mixing time, concentration of benzene and toluene, and temperature, were the parameters considered for conducting the batch experiments, for which their effect on adsorption efficiency was evaluated. Our conducted experiments introduced the neutral pH as the best pH range to obtain the maximum removal. Fitting the adsorption data into the various models revealed the aptness of the Langmuir isotherm equation in describing experimental information and highest adsorption capacity; for benzene it was 129.4, 134.2, 137.3, and 148.2 mg g(−1), but for toluene it was 118.4, 125.2, 129.6, and 133.1 mg g(−1), for temperature 20, 30, 40, and 50 °C, respectively. Using obtained optimal conditions, the adsorption efficiencies of benzene and toluene were obtained to be 98.4% and 93.1%, respectively. Kinetic studies showed acceptable coefficients for PSO kinetics and confirmed its suitability. Also, the recyclability results showed that for six consecutive periods of the adsorption-desorption process, the percentage of removal decreased by only 6% for benzene and toluene. Moreover, calculating thermodynamic parameter changes for benzene and toluene removal confirmed the favorability and spontaneity of the studied process and its endothermic nature. Considering the above findings, Fe(3)O(4)@ZIF-8 was found to be an operative adsorbent for removing pollutants. |
format | Online Article Text |
id | pubmed-9457738 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-94577382022-09-09 Removal of Benzene and Toluene from Synthetic Wastewater by Adsorption onto Magnetic Zeolitic Imidazole Framework Nanocomposites Kyzas, George Z. McKay, Gordon Al-Musawi, Tariq J. Salehi, Sabereh Balarak, Davoud Nanomaterials (Basel) Article Considering the risk associated with exposure to benzene and toluene in water resources, researchers have been motivated to conduct studies to remove them from aqueous solutions. Thus, by performing the present study, the potential of Fe(3)O(4)/zeolite imidazolate framework nanoparticles (Fe(3)O(4)@ZIF-8) was evaluated for the adsorption of benzene and toluene. Accordingly, the solution pH, Fe(3)O(4)@ZIF-8 dosage, mixing time, concentration of benzene and toluene, and temperature, were the parameters considered for conducting the batch experiments, for which their effect on adsorption efficiency was evaluated. Our conducted experiments introduced the neutral pH as the best pH range to obtain the maximum removal. Fitting the adsorption data into the various models revealed the aptness of the Langmuir isotherm equation in describing experimental information and highest adsorption capacity; for benzene it was 129.4, 134.2, 137.3, and 148.2 mg g(−1), but for toluene it was 118.4, 125.2, 129.6, and 133.1 mg g(−1), for temperature 20, 30, 40, and 50 °C, respectively. Using obtained optimal conditions, the adsorption efficiencies of benzene and toluene were obtained to be 98.4% and 93.1%, respectively. Kinetic studies showed acceptable coefficients for PSO kinetics and confirmed its suitability. Also, the recyclability results showed that for six consecutive periods of the adsorption-desorption process, the percentage of removal decreased by only 6% for benzene and toluene. Moreover, calculating thermodynamic parameter changes for benzene and toluene removal confirmed the favorability and spontaneity of the studied process and its endothermic nature. Considering the above findings, Fe(3)O(4)@ZIF-8 was found to be an operative adsorbent for removing pollutants. MDPI 2022-09-02 /pmc/articles/PMC9457738/ /pubmed/36080086 http://dx.doi.org/10.3390/nano12173049 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Kyzas, George Z. McKay, Gordon Al-Musawi, Tariq J. Salehi, Sabereh Balarak, Davoud Removal of Benzene and Toluene from Synthetic Wastewater by Adsorption onto Magnetic Zeolitic Imidazole Framework Nanocomposites |
title | Removal of Benzene and Toluene from Synthetic Wastewater by Adsorption onto Magnetic Zeolitic Imidazole Framework Nanocomposites |
title_full | Removal of Benzene and Toluene from Synthetic Wastewater by Adsorption onto Magnetic Zeolitic Imidazole Framework Nanocomposites |
title_fullStr | Removal of Benzene and Toluene from Synthetic Wastewater by Adsorption onto Magnetic Zeolitic Imidazole Framework Nanocomposites |
title_full_unstemmed | Removal of Benzene and Toluene from Synthetic Wastewater by Adsorption onto Magnetic Zeolitic Imidazole Framework Nanocomposites |
title_short | Removal of Benzene and Toluene from Synthetic Wastewater by Adsorption onto Magnetic Zeolitic Imidazole Framework Nanocomposites |
title_sort | removal of benzene and toluene from synthetic wastewater by adsorption onto magnetic zeolitic imidazole framework nanocomposites |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9457738/ https://www.ncbi.nlm.nih.gov/pubmed/36080086 http://dx.doi.org/10.3390/nano12173049 |
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