Speaker
Description
Hexavalent chromium, Cr(VI), is one of the most notorious pollutants with health and environmental impacts due to carcinogenic, teratogenic, and mutagenic effects on the human organism.1 Therefore, treating wastewater containing Cr(VI) before discharge into the aquatic system is extremely necessary. In this study, the nonlinear regression method was used to determine the kinetic and isotherm parameters for Cr(VI) sorption from aqueous solution on hexamethylene diamine-modified macroporous copolymer based on glycidyl methacrylate (PGE-HMD).2 The Avrami kinetic model provides the best correlation of the experimental data with R2 = 0.994 and χ2 = 0.004, while the Freundlich isotherm model best described the Cr(VI) sorption onto PGE-HMD copolymer indicating a heterogenous sorption process.
Acknowledgement: This research was financially supported by the Ministry of Science, Technological Development and Innovation of the Republic of Serbia (Contract No. 451-03-47/2023-01/200026 and 451-03-47/2023-01/200135).
References
1. Wise, J. P.; Young, J. L.; Cai, J.; Cai, L., Current understanding of hexavalent chromium [Cr(VI)] neurotoxicity and new perspectives, Environ. Int. 2022, 158, 106877. DOI: 10.1016/j.envint.2021.106877
2. Ekmeščić, B. M.; Maksin, D. D.; Marković, J. P.; Vuković, Z. M.; Hercigonja, R. V.; Nastasović, A. B.; Onjia, A. E., Recovery of molybdenum oxyanions using macroporous copolymer grafted with diethylenetriamine, Arab. J. Chem. 2019, 12(8), 3628-3638. DOI: 10.1016/j.arabjc.2015.11.010
