Dalia M. Saad, Ewa M. Cukrowska
A successful approach to develop an insoluble form of polyethylenimine with a thiol-based functional group for selective removal of Hg(II) from aqueous solutions is reported. The objective of this study was to evaluate the selectivity and regeneration potential of the modified polymer for Hg(II) ions. The methodology involved synthesizing the polymer and testing its removal efficiency against competing ions. Results showed that the synthesized polymer exhibited high selectivity for Hg(II), achieving removal efficiencies of up to 97%. The Freundlich isotherm best described the adsorption data, while the kinetics were effectively explained by a pseudo-second-order model indicating chemisorption. Furthermore, a thermodynamic analysis revealed high activation energies (41 kJ mol-1), confirming that chemisorption is the primary mechanism for interaction between the mercury ions and the polymer surface. Notably, the polymer maintained good potential for re-use after multiple regeneration cycles, with effective removal efficiencies persisting up to the fifth cycle.
@article{0c66a220-04e0-4e8c-a585-8d109983e6d7,
title={Selective removal of mercury from aqueous solutions using thiolated cross-linked polyethylenimine},
author={Dalia M. Saad and Ewa M. Cukrowska},
year={2013},
language={en}
}TY - JOUR TI - Selective removal of mercury from aqueous solutions using thiolated cross-linked polyethylenimine AU - Dalia M. Saad AU - Ewa M. Cukrowska PY - 2013 LA - en ER -
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