Abstract
Removal of iron (III) and aluminum ions from phosphoric acid-nitric acid (PA-NA) solutions including their batch adsorption kinetics on sulfonic/monophosphonic acid chelation resin (S957) and the dynamic adsorption-elution process at the different operating parameters is studied. The results reveal that Fe(III) ion and Al(III) ion in PA-NA solutions on S957 resin present the slow batch adsorption rate. Their adsorption equilibriums are reached at 60 min and 40 min contact time, respectively. The dynamic adsorption process of Fe(III) ion and Al(III) ion is dependent on the feed flow rate through the fixed bed column, and at the 0.5 mLmin-1 flow rate, Fe(III) ion and Al(III) ion can be greatly removed from PA-NA solutions. In the dynamic elution process, the flow rate shows little effect on the elution process of Fe(III) and Al(III) ions. The better regeneration solution for the dynamic elution process is HCl solution, and the optimized concentration of HCl solution is 8 mol•L-1.
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.
