Abstract
The phosphonic acid-functionalized silica magnetic microspheres (PA-SMM) were successfully synthesized for U(VI) adsorption. The PA-SMM exhibited higher adsorption capacity for U(VI) compared to unmodified silica magnetic microspheres due to the high affinity of phosphonic acid groups with U(VI). The adsorption was dominated by inner sphere surface chelation and kinetically followed the pseudo-second-order equation. The adsorption isotherms fitted well to the Langmuir model, with the maximum adsorption capacity of 76.9 mg/g at 298 K and pH 5.0. Thermodynamic parameters indicated the endothermic and spontaneous nature of U(VI) adsorption. The PA-SMM could be regenerated using 0.2 M EDTA-0.5 M HNO3 as the eluent.
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.
