Membrane Distillation Employed for Separation of Water Isotopic Compounds

Abstract An attempt to apply membrane distillation (MD) for the enrichment of water isotopic compounds was made. The process was conducted as a direct-contact MD with flat-sheet microporous, hydrophobic polytetrafluoroethylene (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.

[1]  Max Coleman,et al.  Reduction of water with zinc for hydrogen isotope analysis , 1982 .

[2]  Roland Wimmerstedt,et al.  Membrane distillation - a theoretical study of evaporation through microporous membranes , 1985 .

[3]  Giulio C. Sarti,et al.  Low energy cost desalination processes using hydrophobic membranes , 1985 .

[4]  Enrico Drioli,et al.  Membrane distillation in the textile wastewater treatment. , 1991 .

[5]  Harold C. Urey,et al.  Oxygen Exchange Reactions of Organic Compounds and Water , 1938 .

[6]  T. Hodgkiess,et al.  Membrane distillation - an assessment , 1985 .

[7]  W. Hook,et al.  16O/18O and H/D separation factors for liquid/vapor permeation of water through an hydrophobic membrane , 1991 .

[8]  Sudjito,et al.  Desalination by solar heated membrane distillation , 1991 .

[9]  M. Tomaszewska,et al.  Concentration of the extraction fluid from sulfuric acid treatment of phosphogypsum by membrane distillation , 1993 .

[10]  Enrico Drioli,et al.  Membrane distillation : An experimental study , 1985 .

[11]  S. Epstein,et al.  Variation of O18 content of waters from natural sources , 1953 .

[12]  E. Drioli,et al.  Microporous membranes in membrane distillation , 1986 .

[13]  Anthony G. Fane,et al.  Factors affecting flux in membrane distillation , 1990 .

[14]  G. Habermehl,et al.  ReviewPure appl. Chem: Rinehart, K. L., et al. Marine natural products as sources of antiviral, antimicrobial, and antineoplastic Agents. 53, 795 (1981). (K. L. Rinehart, University of Illinois, Urbana, IL 61801, U.S.A.) , 1983 .

[15]  A. Chmielewski,et al.  CASCADES FOR NATURAL WATER ENRICHMENT IN DEUTERIUM AND OXYGEN-18 USING MEMBRANE PERMEATION , 1993 .

[16]  S.-I. Andersson,et al.  Design and field tests of a new membrane distillation desalination process , 1985 .

[17]  Anthony G. Fane,et al.  Heat and mass transfer in membrane distillation , 1987 .

[18]  P. Schwahn,et al.  Evaporation of alcohol/water mixtures through hydrophobic porous membranes , 1987 .