Membrane distillation employed for separation of water isotopic compounds

Journal Article · Fri Mar 31 23:00:00 EST 1995 · Separation Science and Technology

DOI:https://doi.org/10.1080/01496399508010368· OSTI ID:88706

Chmielewski, A G; Zakrzewska-Trznadel, G ^[1]

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1. Institute of Nuclear Chemistry and Technology, Warsaw (Poland)

An attempt to apply membrane distillation (MD) for the enrichment of waste isotopic compounds was made. The process was conducted as a direct-contact MD with flat-sheet microporous, hydrophobic polytetrafluorethylene (PTFE) membranes in the temperature range 323-353K. The distillate condensation was carried out directly into a stream of cooling water. The comparison between calculated Rayleigh distillation curves and the results of permeation experiments demonstrated the MD process to be more efficient than simple distillation for enrichment of the heavy isotopes in water.

• Sponsoring Organization: USDOE
• OSTI ID: 88706
• Report Number(s): CONF-931043--
• Journal Information: Separation Science and Technology, Journal Name: Separation Science and Technology Journal Issue: 7-9 Vol. 30; ISSN 0149-6395; ISSN SSTEDS
• Country of Publication: United States
• Language: English

Related Subjects

40 CHEMISTRY
DISTILLATION
HEAVY WATER
ISOTOPE SEPARATION
MEMBRANES
POLYTETRAFLUOROETHYLENE
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0273-0400 K