Treatment of Waters Containing Uranium with Saponite Clay

摘要

The article has investigated sorption of U(VI) on a smectite mineral-saponite from the Tash-kinsk deposit in the Khmelnitsk region. The equilibrium in the U(VI)-saponite system sets in within 8 h. The relationship between sorption and the pH has a clear-cut maximum characteristic of uranium sorption on aluminum-silicates at the pH values 5.5-7. The U(VI) sorption isotherm on saponite is described by the Langmuir empirical equation. We have established the influence on the sorption process of com-plexation reagents (EDTA, carbonate ions, fulvic acids). Based on experimental data the possibility of using the sorption method with the employment of saponite for water treatment containing uranium is shown.