APPLICATION OF CHITOSAN IONICALLY CROSSLINKED WITH SODIUM EDETATE FOR REACTIVE DYES REMOVAL FROM AQUEOUS SOLUTIONS

• Authors: Tomasz Jóźwiak , Urszula Filipkowska , Paula Szymczyk , Małgorzata Kuczajowska-Zadrożna , Artur Mielcarek
• Languages of publication: EN

Abstracts

EN

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.

Keywords

EN

chitosan beads; crosslinking; dyes sorption; sodium edetate

• Publisher: Polish Chitin Society
• Journal: Progress on Chemistry and Application of Chitin and its Derivatives
• Year: 2015
• Volume: 20
• Pages: 82-96

Contributors

author

Tomasz Jóźwiak

• Department of Environmental Engineering, University of Warmia and Mazury in Olsztyn ul Warszawska 117t,10–719 Olsztyn, Poland

author

Urszula Filipkowska

• Department of Environmental Engineering, University of Warmia and Mazury in Olsztyn ul Warszawska 117t,10–719 Olsztyn, Poland

author

Paula Szymczyk

• Department of Environmental Engineering, University of Warmia and Mazury in Olsztyn ul Warszawska 117t,10–719 Olsztyn, Poland

author

Małgorzata Kuczajowska-Zadrożna

• Department of Biotechnology in Environmental Protection, University of Warmia and Mazury in Olsztyn ul. Słoneczna 45Gt,10–709Olsztyn, Poland

author

Artur Mielcarek

• Department of Environmental Engineering, University of Warmia and Mazury in Olsztyn ul Warszawska 117t,10–719 Olsztyn, Poland

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• Document Type: article