Abstract
A simple and rapid method for the separation and recovery of osmium [Os(IV)] was investigated in a packed column with γ-nano-Al2O3. The influence of flow rate, initial Os(IV) concentration, and column height on column adsorption were also analyzed in this study. The experimental breakthrough curves were modeled using Bohart–Adams, Thomas, and Yoon–Nelson models, respectively, and the parameters for all of these models were calculated. Sequential adsorption/desorption experiments confirmed that the adsorption column can be readily regenerated and reused. Under the optimized experimental conditions, it is expected that this dynamic adsorption process can be a candidate for the effective separation and recovery of Os(IV) from the simulated industrial leach liquor. A simple method for the rapid separation and recovery of osmium was successfully established using Al2O3 in a packed column, and it is probable that the column is suitable for a continuous system for large-scale applications in industry.
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