Novel kappa-carrageenan− poly (vinyl alcohol) − modified pumice Hydrogel composite for the adsorption of cationic dye
Mahmoud, A., Ali, A., Alshukur, M., Sultan, M., Mostafa, H., Eldeeb, E., Ashmawy, A. (2023). Novel kappa-carrageenan− poly (vinyl alcohol) − modified pumice Hydrogel composite for the adsorption of cationic dye. EKB Journal Management System, 66(12), 21-35. doi: 10.21608/ejchem.2023.176082.7210
Ammar M. Mahmoud; Ali Ahmad Ali; Malek Alshukur; Mohamed E. Sultan; Hamida Y. Mostafa; E. A. Eldeeb; Ashraf Mahmoud Ashmawy. "Novel kappa-carrageenan− poly (vinyl alcohol) − modified pumice Hydrogel composite for the adsorption of cationic dye". EKB Journal Management System, 66, 12, 2023, 21-35. doi: 10.21608/ejchem.2023.176082.7210
Mahmoud, A., Ali, A., Alshukur, M., Sultan, M., Mostafa, H., Eldeeb, E., Ashmawy, A. (2023). 'Novel kappa-carrageenan− poly (vinyl alcohol) − modified pumice Hydrogel composite for the adsorption of cationic dye', EKB Journal Management System, 66(12), pp. 21-35. doi: 10.21608/ejchem.2023.176082.7210
Mahmoud, A., Ali, A., Alshukur, M., Sultan, M., Mostafa, H., Eldeeb, E., Ashmawy, A. Novel kappa-carrageenan− poly (vinyl alcohol) − modified pumice Hydrogel composite for the adsorption of cationic dye. EKB Journal Management System, 2023; 66(12): 21-35. doi: 10.21608/ejchem.2023.176082.7210

Novel kappa-carrageenan− poly (vinyl alcohol) − modified pumice Hydrogel composite for the adsorption of cationic dye

Egyptian Journal of Chemistry
Volume 66, Issue 12, December 2023, Page 21-35  XML PDF (709.84 K)
Document Type: Original Article
DOI: 10.21608/ejchem.2023.176082.7210
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Authors
Ammar M. Mahmoud1; Ali Ahmad Ali2; Malek Alshukur3; Mohamed E. Sultan1; Hamida Y. Mostafaorcid 4; E. A. Eldeeb5; Ashraf Mahmoud Ashmawy email orcid 6
1al-azhar university
2Applied Chemistry, Science Faculty, Al-Azhar University.
3Damascus University
4Refining Department, Egyptian Petroleum Research Institute (EPRI), 1 Ahmed El- Zomor St., Nasr City, 11727, Cairo, Egypt
5Alexandria University, Egypt
6Chemistry Department, Faculty of Science, Al-Azhar University, Egypt
Abstract
In this work, a new resin that can remove cationic dyes like Methylene Blue dye from aqueous solutions will be introduced. For this, novel kappa-carrageenan/polyvinyl alcohol hydrogel (kC/PVA) composites with modified pumice were made. Using the freezing-thawing procedure, the mixture of polymers and modified pumice was cross-linked, and then K+ ions were added. Using SEM, FTIR, and XRD methods, the structure of the resultant hydrogel composites was identified. Using a batch adsorption technique, the effects of contact time, changed pumice content, temperature, pH, ion strength, and dye solution salinity on the adsorption of cationic methylene blue dye on the hydrogel composites were examined. The swelling capacity of the resultant hydrogels was found to be lower than that of modified pumice-free hydrogels, falling from 780 to 470 %. The number of salts CaCl2 and AlCl3 in the solution dramatically reduced the adsorption capacity from 24.61 to 19 and 17 correspondingly. The greatest adsorption capacity of the hydrogel composites achieved was 185.65 mg g-1, and equilibrium dye adsorption data were also found to follow the Langmuir model. Based on the results of this study, synthetic hydrogel composites can be used as inexpensive adsorbents to remove colors from aqueous solutions, such as commercial dye baths.
Keywords
: cationic dye removal; methylene blue dye; modified composite hydrogel; adsorption; kappa-carrageenan; poly (vinyl alcohol); modified pumice
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