Multistage process of deuterium and heavy oxygen enrichment by membrane distillation
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Deuterium and oxygen-18 isotope enrichment in water by membrane distillation were studied in a 4-stage cascade. Two configurations of membrane distillation (MD) employing PTFE fat-sheet membranes were investigated, including direct contact MD and air gap MD. The first, direct contact MD is more efficient. It is characterized by high distillate flow rate. The temperature polarization coefficients were higher for direct contact MD. H/D and O-16/O-18 separation factors were determined in the 4-stage cascade.
Извор:Separation Science and Technology, 1997, 32, 1-4, 527-539
- 9th Symposium on Separation Science and Technology for Energy Applications, Oct 22-26, 1995, Gatlinburg, TN
ISSN: 0149-6395 (print)