Synthesis of New Cyclodextrin-Based Adsorbents to Remove Direct Red 83:1
Two cyclodextrins (CDs), γ– and hydroxypropyl (HP)–γ–CDs were used to synthesize new adsorbents by using epichlorohydrin (EPI) as cross-linking agent in order to remove Direct Red 83:1 (DR) from water. Both polymers were characterized in terms of Fourier spectroscopy, nuclear magnetic resonance, par...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-08-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/12/9/1880 |
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| author | José A. Pellicer María Isabel Rodríguez-López María Isabel Fortea Vicente M. Gómez-López David Auñón Estrella Núñez-Delicado José A. Gabaldón |
| author_facet | José A. Pellicer María Isabel Rodríguez-López María Isabel Fortea Vicente M. Gómez-López David Auñón Estrella Núñez-Delicado José A. Gabaldón |
| author_sort | José A. Pellicer |
| collection | DOAJ |
| description | Two cyclodextrins (CDs), γ– and hydroxypropyl (HP)–γ–CDs were used to synthesize new adsorbents by using epichlorohydrin (EPI) as cross-linking agent in order to remove Direct Red 83:1 (DR) from water. Both polymers were characterized in terms of Fourier spectroscopy, nuclear magnetic resonance, particle size distribution and thermogravimetric analysis. Experimental data for both polymers were well fitted to the pseudo-second order and intraparticle diffusion model, indicating that in the adsorption both chemical and physical interactions are essential in the removal of DR. Three different isotherm models were analyzed, concluding that γ–CDs–EPI followed the Temkin isotherm and HP–γ–CDs-EPI the Freundlich isotherm, these results suggested that the adsorption was happening onto heterogeneous surfaces. The results of the Gibbs free energy showed that the adsorption was spontaneous at room temperature. In order to eliminate the remaining dye after the polymer treatment, and advanced oxidation process (AOP) was considered, achieving more than 90% of removal combining both mechanisms. |
| first_indexed | 2024-03-10T17:05:56Z |
| format | Article |
| id | doaj.art-6ea535e6750b44a88468fc5aeb05411b |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-10T17:05:56Z |
| publishDate | 2020-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-6ea535e6750b44a88468fc5aeb05411b2023-11-20T10:49:23ZengMDPI AGPolymers2073-43602020-08-01129188010.3390/polym12091880Synthesis of New Cyclodextrin-Based Adsorbents to Remove Direct Red 83:1José A. Pellicer0María Isabel Rodríguez-López1María Isabel Fortea2Vicente M. Gómez-López3David Auñón4Estrella Núñez-Delicado5José A. Gabaldón6Departamento de Ciencias de la Salud. Universidad Católica San Antonio de Murcia (UCAM), Avenida de los Jerónimos 135, Guadalupe, 30107 Murcia, SpainDepartamento de Ciencias de la Salud. Universidad Católica San Antonio de Murcia (UCAM), Avenida de los Jerónimos 135, Guadalupe, 30107 Murcia, SpainDepartamento de Ciencias de la Salud. Universidad Católica San Antonio de Murcia (UCAM), Avenida de los Jerónimos 135, Guadalupe, 30107 Murcia, SpainDepartamento de Ciencias de la Salud. Universidad Católica San Antonio de Murcia (UCAM), Avenida de los Jerónimos 135, Guadalupe, 30107 Murcia, SpainDepartamento de Ciencias de la Salud. Universidad Católica San Antonio de Murcia (UCAM), Avenida de los Jerónimos 135, Guadalupe, 30107 Murcia, SpainDepartamento de Ciencias de la Salud. Universidad Católica San Antonio de Murcia (UCAM), Avenida de los Jerónimos 135, Guadalupe, 30107 Murcia, SpainDepartamento de Ciencias de la Salud. Universidad Católica San Antonio de Murcia (UCAM), Avenida de los Jerónimos 135, Guadalupe, 30107 Murcia, SpainTwo cyclodextrins (CDs), γ– and hydroxypropyl (HP)–γ–CDs were used to synthesize new adsorbents by using epichlorohydrin (EPI) as cross-linking agent in order to remove Direct Red 83:1 (DR) from water. Both polymers were characterized in terms of Fourier spectroscopy, nuclear magnetic resonance, particle size distribution and thermogravimetric analysis. Experimental data for both polymers were well fitted to the pseudo-second order and intraparticle diffusion model, indicating that in the adsorption both chemical and physical interactions are essential in the removal of DR. Three different isotherm models were analyzed, concluding that γ–CDs–EPI followed the Temkin isotherm and HP–γ–CDs-EPI the Freundlich isotherm, these results suggested that the adsorption was happening onto heterogeneous surfaces. The results of the Gibbs free energy showed that the adsorption was spontaneous at room temperature. In order to eliminate the remaining dye after the polymer treatment, and advanced oxidation process (AOP) was considered, achieving more than 90% of removal combining both mechanisms.https://www.mdpi.com/2073-4360/12/9/1880cyclodextrinsadsorptionpolymerizationwastewater treatmentpulsed light |
| spellingShingle | José A. Pellicer María Isabel Rodríguez-López María Isabel Fortea Vicente M. Gómez-López David Auñón Estrella Núñez-Delicado José A. Gabaldón Synthesis of New Cyclodextrin-Based Adsorbents to Remove Direct Red 83:1 Polymers cyclodextrins adsorption polymerization wastewater treatment pulsed light |
| title | Synthesis of New Cyclodextrin-Based Adsorbents to Remove Direct Red 83:1 |
| title_full | Synthesis of New Cyclodextrin-Based Adsorbents to Remove Direct Red 83:1 |
| title_fullStr | Synthesis of New Cyclodextrin-Based Adsorbents to Remove Direct Red 83:1 |
| title_full_unstemmed | Synthesis of New Cyclodextrin-Based Adsorbents to Remove Direct Red 83:1 |
| title_short | Synthesis of New Cyclodextrin-Based Adsorbents to Remove Direct Red 83:1 |
| title_sort | synthesis of new cyclodextrin based adsorbents to remove direct red 83 1 |
| topic | cyclodextrins adsorption polymerization wastewater treatment pulsed light |
| url | https://www.mdpi.com/2073-4360/12/9/1880 |
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