pervaporation

(redirected from perstillation)
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pervaporation

[pər‚vap·ə′rā·shən]
(chemistry)
A chemical separation technique in which a solution is placed in contact with a heated semipermeable membrane that selectively retains one of the components of a solution.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.