Abstract
Abstract The extraction of uranium(VI) from sulfuric, hydrochloric, nitric, and perchloric acid was studied using dioctylphenylphosphoric acid (DOPPA) in heptane as extractant. At low aqueous acid concentration, an ion-exchange mechanism was generally observed and the extracted species was of the type UO2A4H2. Deviation from this behavior was observed at higher acid concentrations. From perchloric acid solutions, after an initial decrease, the extraction coefficient increased after 3 to 4 N acid. Some of the explanations offered in the literature for this behavior in the case of di-2-ethylhexylphosphoric acid (DEHPA) have been critically examined. Extraction of mineral acids, particularly HCI and HNO3, was also observed with DOPPA but to a lesser extent than with DEHPA.
Sign-in/Register to access full text options 
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.
