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Volume 10
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10.3390/gels10120760
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This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

Development of Variable Charge Cationic Hydrogel Particles with Potential Application in the Removal of Amoxicillin and Sulfamethoxazole from Water

by
Francisca L. Aranda
1,2,
Manuel F. Meléndrez
3,
Mónica A. Pérez
2,
Bernabé L. Rivas
2,
Eduardo D. Pereira
4 and
Daniel A. Palacio
2,*
1
Departamento de Ingeniería de Materiales, Facultad de Ingeniería, Universidad de Concepción, Concepción 4070371, Chile
2
Departamento de Polímeros, Facultad de Ciencias Químicas, Universidad de Concepción, Concepción 3349001, Chile
3
Facultad de Ciencias para el cuidado de la Salud, Universidad San Sebastián, Campus Las Tres Pascualas, Concepción 4060000, Chile
4
Departamento de Química Analítica e Inorgánica, Facultad de ciencias Químicas, Universidad de Concepción, Casilla 160-C, Concepción 3349001, Chile
*
Author to whom correspondence should be addressed.
Gels 2024, 10(12), 760; https://doi.org/10.3390/gels10120760
Submission received: 12 October 2024 / Revised: 13 November 2024 / Accepted: 21 November 2024 / Published: 23 November 2024
(This article belongs to the Special Issue Designing Hydrogels and Hydrogel-Derived Materials for Agriculture and Water Sustainability)
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Abstract

Cationic hydrogel particles (CHPs) crosslinked with glutaraldehyde were synthesized and characterized to evaluate their removal capacity for two globally consumed antibiotics: amoxicillin and sulfamethoxazole. The obtained material was characterized by FTIR, SEM, and TGA, confirming effective crosslinking. The optimal working pH was determined to be 6.0 for amoxicillin and 4.0 for sulfamethoxazole. Under these conditions, the CHPs achieved over 90.0% removal of amoxicillin after 360 min at room temperature, while sulfamethoxazole removal reached approximately 60.0% after 300 min. Thermodynamic analysis indicated that adsorption occurs through a physisorption process and is endothermic. The ΔH° values of 28.38 kJ mol−1, 12.39 kJ mol−1, and ΔS° 97.19 J mol−1 K−1, and 33.94 J mol−1 K−1 for AMX and SMX, respectively. These results highlight the potential of CHPs as promising materials for the removal of such contaminants from aqueous media.
Keywords: cationic hydrogels particles; wastewater treatment; adsorption mechanism; antibiotics; pharmaceutical compounds cationic hydrogels particles; wastewater treatment; adsorption mechanism; antibiotics; pharmaceutical compounds

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MDPI and ACS Style

Aranda, F.L.; Meléndrez, M.F.; Pérez, M.A.; Rivas, B.L.; Pereira, E.D.; Palacio, D.A. Development of Variable Charge Cationic Hydrogel Particles with Potential Application in the Removal of Amoxicillin and Sulfamethoxazole from Water. Gels 2024, 10, 760. https://doi.org/10.3390/gels10120760

AMA Style

Aranda FL, Meléndrez MF, Pérez MA, Rivas BL, Pereira ED, Palacio DA. Development of Variable Charge Cationic Hydrogel Particles with Potential Application in the Removal of Amoxicillin and Sulfamethoxazole from Water. Gels. 2024; 10(12):760. https://doi.org/10.3390/gels10120760

Chicago/Turabian Style

Aranda, Francisca L., Manuel F. Meléndrez, Mónica A. Pérez, Bernabé L. Rivas, Eduardo D. Pereira, and Daniel A. Palacio. 2024. "Development of Variable Charge Cationic Hydrogel Particles with Potential Application in the Removal of Amoxicillin and Sulfamethoxazole from Water" Gels 10, no. 12: 760. https://doi.org/10.3390/gels10120760

APA Style

Aranda, F. L., Meléndrez, M. F., Pérez, M. A., Rivas, B. L., Pereira, E. D., & Palacio, D. A. (2024). Development of Variable Charge Cationic Hydrogel Particles with Potential Application in the Removal of Amoxicillin and Sulfamethoxazole from Water. Gels, 10(12), 760. https://doi.org/10.3390/gels10120760

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