APPLICATION OF CHITOSAN IONICALLY CROSSLINKED WITH SODIUM EDETATE FOR REACTIVE DYES REMOVAL FROM AQUEOUS SOLUTIONS
Languages of publication
In this study, we investigated the effect of chitosan crosslinking with sodium edetate (SE) on its sorption capacity of Reactive Black 5 and Reactive Yellow 84 dyes. The first stage of the study allowed establishing conditions of chitosan crosslinking. The process of ionic crosslinking was effective only at pH 4 and at the optimal dose of sodium edetate ranging from 0.046 to 0.462 g/g CHs. Process temperature in the range of 20-60oC had no significant effect on the stability of crosslinked chitosan. Contrary to the non-crosslinked chitosan (CHs), chitosan crosslinked with sodium edetate (CHs-SE) was capable of dyes sorption at pH 3. Sorption of reactive onto both CHs and CHs-SE was the most effective at pH 4. Chitosan crosslinking with SE had a positive effect on the effectiveness of RB5 and RY84 sorption. This effect was especially tangible within the first ten or so hours of sorption. After 24 h of the process, the sorption capacity of CHs-SE against RB5 and RY84 reached 1296.69 mg/g and 1883.62 mg/g, respectively. In the case of CHs, sorption capacity achieved after the same time was lower and accounted for 1025.55 mg RB5/g and 1539.67 mg RY84/g.
- 1. Filipkowska U, Jóźwiak T (2013) Application of chemically-cross-linked chitosan for the removal of Reactive Black 5 and Reactive Yellow 84 dyes from aqueous solutions. J Polym Eng 33, 735-747. DOI: 10.1515/polyeng-2013-0166.
- 2. Kim T Y, Park S S, Cho S Y (2012) Adsorption characteristics of Reactive Black 5 onto chitosan beads cross-linked with epichlorohydrin. J Ind Eng Chem 18, 1458-1464. DOI: 10.1016/j.jiec.2012.02.006
- 3. Croisier F, Jerome C (2013) Chitosan-based biomaterials for tissue engineering. Eur Polym J 49, 780-792.
- 4. Chiou M S, Li H Y (2002) Equilibrium and kinetic modeling of adsorption of reactive dye on cross-linked chitosan beads. J Hazard Mater 93, 233-248. DOI: 10.1016/S0304-3894(02)00030-4
- 5. Silva R M, Silva G A, Coutinho O P, Mano J F, Reis R L (2004) Preparation and characterization in simulated body conditions of glutaraldehyde crosslinked chitosan membranes. J Mater Sci-Mater M 15, 1105-1112.
- 6. Schiffman J D, Schauer C L (2007) Cross-Linking Chitosan Nanofibers. Biomacromolecules 8, 594-601. DOI: 10.1021/bm060804s
- 7. Shu X Z, Zhu K J (2002) The influence of multivalent phosphate structure on the properties of ionically cross-linked chitosan films for controlled drug release. Eur J Pharm Biopharm 54, 235-243. DOI: 10.1016/S0939-6411(02)00052-8
- 8. Berger J, Reist M, Mayer J M, Felt O, Peppas N A, Gurny R (2004) Structure and interactions in covalently and ionically crosslinked chitosan hydrogels for biomedical applications. Eur J Pharm Biopharm 57, 19-34.
- 9. Srinatha A, Pandit J K, Singh S (2008) Ionic cross-linked chitosan beads for extended release of ciprofloxacin: In vitro characterization. Indian J Pharm 70, 16-21. DOI: 10.4103/0250-474X.40326
- 10. Wong Y C, Szeto Y S, Cheung W H, McKay G (2004) Pseudo-first-order kinetic studies of the sorption of acid dyes onto chitosan. J. Appl. Polym. Sci 92, 1633-1645. DOI: 10.1002/app.13714
- 11. Filipkowska U (2006) Adsorption and desorption of reactive dyes onto chitin and chitosan flakes and beads. Adsorpt Sci Technol 24, 781-795, DOI: 10.1260/026361706781388932
Publication order reference