Abstract
Rapid and effective uranium removal and enrichment from water is necessary for sustainable economic development and ecological protection. In this paper, an efficient adsorbent Prussian blue compound, potassium manganese ferrocyanide (KMnFC), was synthesized and characterized for the separation of uranium. Its effectiveness in U(VI) removal and adsorption amount were evaluated using batch static adsorption experiments. The adsorption effect of the compound on U(VI) in aqueous solution was investigated, and the maximum adsorption capacity of the compound was 469.48 mg g−1. The adsorption-diffusion kinetic study showed that liquid film diffusion was the main rate control step. The adsorption process of uranium (VI) on KMnFC is a heat absorption reaction and chemisorption of uranium ions in exchange with potassium ions occurs. Most importantly, the compound is uranium selective, and its uranium removal ability is relatively effective even under high acidity circumstances.
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