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Separation Characteristics of Oxygen Isotopes with Hydrophobic PTFE Membranes  

김재우 (한국원자력연구소 양자광학기술개발부)
박상언 (한국원자력연구소 양자광학기술개발부)
김택수 (한국원자력연구소 양자광학기술개발부)
정도영 (한국원자력연구소 양자광학기술개발부)
고광훈 (한국원자력연구소 양자광학기술개발부)
박경배 (한국원자력연구소 하나로이용연구단)
Publication Information
Membrane Journal / v.13, no.3, 2003 , pp. 154-161 More about this Journal
Abstract
We measured the permeation characteristics of water with the hydrophobic PTFE membranes dependent on water temperature to confirm the separation of oxygen isotopes using Air Gap Membrane Distillation (AGMD) and Vacuum Enhanced Membrane Distillation (VEMD). Isotopic concentrations of $H_2^{16}O$ and $H_2^{18}O$ of the permeated water vapor were measured by Diode Laser Absorption Spectroscopy. Concentrations of the heavy oxygen isotopes in the permeated water vapor were decreased. Isotope separation coefficients for the hydrophobic PTFE membranes were 1.004∼1.01 depending on the experimental conditions. We observed the effects of air in membrane pores on the oxygen isotope separation. Isotope separation coefficients for the hydrophobic PTFE membranes without air in pores are higher than those for the membrane with air in pores.
Keywords
isotope separation; oxygen isotopes; hydrophobic membrane; air gap membrane distillation; and vacuum enhanced membrane distillation;
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Times Cited By KSCI : 1  (Citation Analysis)
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