Adsorption of Sr2+ from Synthetic Waste Effluents Using Taiwan Zhi-Shin Bentonite
Journal: International Journal of Molecular Sciences
Year: 2025

This study investigated strontium (Sr<sup>2+</sup>) adsorption by Taiwan Zhi-Shin bentonite (cation exchange capacity (CEC): 80-86 meq 100 g<sup>-1</sup>) using Sr(NO<sub>3</sub>)<sub>2</sub>-simulated nuclear waste. Kinetic analysis revealed pseudo-second-order adsorption kinetics, achieving 95% Sr<sup>2+</sup> removal within 5 min at pH 9. Isothermal studies showed a maximum capacity of 0.28 mmol g<sup>-1</sup> (56 meq 100 g<sup>-1</sup>) at 15 mmol L<sup>-1</sup> Sr<sup>2+</sup>, accounting f