Two metal organic framework materials were investigated to determine the removal efficiency and capacity of MOF materials for krypton recovery from air at non-cryogenic temperatures. Our two bed breakthrough measurements on NiDOBDC and a partially fluorinated FMOFCu indicate these materials can capture and separate parts per million levels of Xe and Kr from air and, with a two-bed system, separate Xe from Kr. In a two-bed system, the he removal efficiency and adsorption capacity for Kr on these two MOFs were further increased Xe was removed in the first bed. This shows a promising future for MOFs in a radioactive nuclides separation from spent fuel.
Revised: February 18, 2015 |
Published: July 29, 2014
Citation
Liu J., C.A. Fernandez, P.F. Martin, P.K. Thallapally, and D.M. Strachan. 2014.A Two-Column Method for the Separation of Kr and Xe from Process Off-Gases.Industrial and Engineering Chemistry Research 53, no. 32:12893-12899.PNNL-SA-100864.doi:10.1021/ie502156h