Kinetics of Ion Exchange of Zr/Sn(IV) Phosphonate–Phosphate Hybrid Materials for Separation of Lanthanides from Oxidized Actinides
Journal Article
·
· Solvent Extraction and Ion Exchange
- Texas A & M Univ., College Station, TX (United States)
The kinetics of ion exchange of Zr/Sn(IV) phosphonate-phosphate hybrid ion exchange materials have been studied with several types of ions of specific interest to nuclear fuel recycling including Nd3+ at 4.5 and 43 mM and NpO2+ at 2.9 mM spanning multiple HNO3 concentrations. In most cases the equilibrium was reached in less than 12 h. The ion exchange behavior followed that of pseudo first-order adsorption with rates ranging from 0.430–4.10 h-1 and 0.290–0.435 h-1 for Nd3+ and NpO2+, respectively. A separation with both Nd3+ and NpO2+ present was performed, resulting in separation factors of 1.9–12, 1.7–6.6, and 2.0–5.7 at 1×10-1, 1×10-2, and 1×10-3 M HNO3, respectively.
- Research Organization:
- Texas A & M Univ., College Station, TX (United States)
- Sponsoring Organization:
- USDOE Office of Nuclear Energy (NE), Nuclear Energy University Program (NEUP)
- Grant/Contract Number:
- NE0000746
- OSTI ID:
- 1832760
- Journal Information:
- Solvent Extraction and Ion Exchange, Vol. 36, Issue 7; ISSN 0736-6299
- Publisher:
- Taylor and FrancisCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 1 work
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