Multistage process of deuterium and heavy oxygen enrichment by membrane distillation

Journal Article · Tue Dec 31 23:00:00 EST 1996 · Separation Science and Technology

DOI:https://doi.org/10.1080/01496399708003213· OSTI ID:471759

Chmielewski, A G; Zakrzewska-Trznadel, G ^[1]; Miljevic, N R ^[2]

---

1. Inst. of Nuclear Chemistry and Technology, Warszawa (Poland)
2. Inst. of Nuclear Sciences, Belgrad (Yugoslavia); and others

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 flat-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 {sup 16}O/{sup 18}O separation factors were determined in the 4-stage cascade.

• Sponsoring Organization: USDOE
• OSTI ID: 471759
• Report Number(s): CONF-951057--
• Journal Information: Separation Science and Technology, Journal Name: Separation Science and Technology Journal Issue: 1-4 Vol. 32; ISSN 0149-6395; ISSN SSTEDS
• Country of Publication: United States
• Language: English

Related Subjects

40 CHEMISTRY
DEUTERIUM
ISOTOPE SEPARATION
MEMBRANES
OXYGEN 18
PERMEABILITY
POLYTETRAFLUOROETHYLENE