| Autor: |
Ainoa Murcia-Salvador, María Isabel Rodríguez-López, José Antonio Pellicer, Teresa Gómez-Morte, David Auñón-Calles, María Josefa Yáñez-Gascón, José Pedro Cerón-Carrasco, Ángel Gil-Izquierdo, Estrella Núñez-Delicado, José Antonio Gabaldón |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
|
| Zdroj: |
Gels, Vol 10, Iss 8, p 496 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
2310-2861 |
| DOI: |
10.3390/gels10080496 |
| Popis: |
Water pollution caused by dyes is a significant environmental issue, necessitating the development of effective, cost-efficient decolorization methods suitable for industrial use. In this study, a Chitosan-Fe polymeric gel was synthesized, characterized, and tested for removing the azo dye Direct Red 83:1 from water. The polymeric magnetic chitosan was analyzed using various techniques: Field Emission Scanning Electron Microscopy (FE-SEM) revealed a porous structure, Differential Scanning Calorimetry (DSC) and Thermal Gravimetric Analysis (TGA) demonstrated the thermal stability, Infrared Spectrophotometry (IR) indicated the successful coordination of iron at the C3 position, and X-ray Powder Diffraction (XRD) confirmed the crystalline nature of the polymeric structure. Optimal conditions for kinetic and isotherm models were found at 1 g and pH 7.0. Adsorption behavior of Direct Red 83:1 onto magnetic chitosan gel beads was studied through kinetic tests and isotherm curves. The maximum adsorption capacity was 17.46 mg/g (qmax). The adsorption process followed pseudo-second-order kinetics (R2 = 0.999) and fit the Temkin isotherm (R2 = 0.946), suggesting heterogeneous surface adsorption. The newly synthesized Chitosan-Fe polymeric gel demonstrated good adsorption properties and facilitated easy separation of purified water. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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