Effect of ammonium carbonate and fluorid

Uranium in solution can be precipitated over a wide pH range, depending on the solution and the precipitant used. This work aims to select an appropriate resin for uranium recovery from alkaline solutions in the presence of ammonia, carbonate, and fluoride. The study assesses the uranium extraction ability of three types of polymeric strong base resin by preparing laboratory solutions to determine the influence of ions such as ammonia, carbonate, and fluoride on uranium recovery. The results obtained from batch experiments indicated that an excess of carbonate and fluoride completely inhibits uranium uptake within the examined pH range. However, even low concentrations of these ions decreased uranium adsorption by the resins. The optimum concentration was determined to be below 2.5 g/L for carbonate and 5.0 g/L for fluoride. Interestingly, high concentrations of ammonia (up to 20 g/L) did not inhibit the uranium exchange process. Among the resins tested, IRA 910U emerged as the most promising adsorbent for uranium under the studied conditions.