KINETIC STUDY OF CONGO RED DYE SORPTION ON MACROPOROUS GMA-BASED COPOLYMER

17th International Conference on Fundamental and Applied Aspects of Physical Chemistry (Proceedings, Volume II) (2024) [J-08-P, pp. 433-436]

AUTHOR(S) / AUTOR(I): Bojana M. Marković , Tamara T. Tadić , Zvjezdana P. Sandić , Sandra S. Bulatović , Natalija Ž. Nedić , Srđan P. Petrović , Aleksandra B. Nastasović , 

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DOI: 10.46793/Phys.Chem24II.433M

ABSTRACT / SAŽETAK:

Diethylenetriamine macroporous crosslinked copolymer of glycidyl methacrylate (GMA) and ethylene glycol dimethacrylate (EGDMA), SGE80-deta, was tested as sorbent of Congo red (CR), in static experiments, from aqueous solutions, at room temperature. The sorption is found to be rapid, with a sorption half-time of 2 min, and a maximum uptake capacity higher than 80% after 30 min. In order to calculate kinetic parameters as well as to determine the rate-limiting step and CR sorption mechanism, obtained kinetic data were fitted to kinetic models. The obtained results suggest a complex mechanism of CR sorption by SGE80-deta, which includes chemisorption and external and internal diffusion.

KEYWORDS / KLJUČNE REČI:

ACKNOWLEDGEMENT / PROJEKAT:

This research has been financially supported by the Ministry of Science, Technological Development and Innovation of Republic of Serbia (Contract No: 451-03-66/2024-03/200026).

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