Reusability potential of Ambrosia-based biosorbents for Crystal Violet dye removal

3rd International Conference on Chemo and BioInformatics, Kragujevac, September 25-26. 2025. (pp. 156-159) 

 

АУТОР(И) / AUTHOR(S): Natalija Ž. Nedić, Sandra S. Bulatović, Tamara T. Tadić, Bojana M. Marković, Aleksandra B. Nastasović

 

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DOI:  10.46793/ICCBIKG25.156N

САЖЕТАК / ABSTRACT:

Sustainable wastewater management requires efficient, cost-effective, and regenerable sorbents for the removal of harmful pollutants, including synthetic dyes. Crystal violet (CV), a cationic dye, is widely used in the textile and pharmaceutical industries, but is known for its toxicity, mutagenicity, and environmental persistence. In this study, the reusability potential of a modified Ambrosia-based biosorbent was investigated. The structure of the modified material was characterized by FTIR spectroscopy before and after CV dye sorption. Desorption of the sorbed dye was performed using various desorbing agents (sodium hydroxide, hydrochloric acid, absolute ethanol, distilled water, and methanol). Absolute ethanol proved most effective, achieving up to 100 % desorption efficiency at unadjusted pH, with 10 mL of desorbing agent for 20 minutes at 450 rpm, following prior sorption. The reusability potential of the biosorbent was further assessed through five consecutive sorption–desorption cycles. In each cycle, dye removal efficiency remained above 95 %, with no significant loss of performance, indicating excellent regeneration capacity. These results suggest that the modified magnetic Ambrosia-based biosorbent is a sustainable and efficient option for toxic dye removal from aqueous systems, with strong reuse potential.

КЉУЧНЕ РЕЧИ / KEYWORDS:

biosorbent, Crystal Violet, FTIR, reusability potential

ПРОЈЕКАТ / ACKNOWLEDGEMENT:

This research has been financially supported by the Ministry of Science, Technological Development and Innovation of the Republic of Serbia (Contract No. 451- 03-136/2025-03/200026). This work is related to the implementation of the United Nations Sustainable Development Goal 6 – Clean water and sanitation.

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