Abstract
The interaction of uranyl cation, in dilute solutions and seawater, with carbonate mineral solids was investigated in order to establish the relation between uranyl ion speciation and sorption. In solutions where the uranyl concentration approaches the carbonate alkalinity, rapid sorption followed by slow release occurs. This is accompaned by a color change in solution, spectroscopically determined to be the result of a change in the dominant uranyl species from hydroxy to carbonato complexes. In a heterogeneous system (solution and solid carbonate), the rate of reaction is directly dependent on the ratio of the surface area to the solution volume. The maximum extent of sorption is directly dependent on uranyl concentration and is almost independent of the surface area to volume ratio, the type of solution or the calcium carbonate mineral. Release of Ca, as a result of uranyl-carbonato complex formation, allows an estimation of the average uranyl to carbonate ratio of the complexes formed, which is in excellent agreement with predicted values.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
