TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 CONT

Membrane distillation(MD) is a separation process where a micro-porous hydrophobic membrane separates two aqueous solutions at different temperatures.... The manner in which the vapour pressure difference is generated across the membrane is determined by the specific module configuration. In the most commonly used configuration, direct contact membrane distillation(DCMD), the permeate-side consists of a condensation liquid(often clean water) that is in direct contact with the membrane.  2, record 1, English, - direct%20contact%20membrane%20distillation

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 CONT

Plusieurs types de distillations membranaires existent, les différences concernent uniquement le côté du perméat et vont conditionner la force motrice de la séparation. [Pour la distillation membranaire à contact direct (DCMD), une] solution aqueuse plus froide que la solution d'alimentation est maintenu en contact direct avec la membrane côté perméat. Dans ce cas, la différence de température transmembranaire induit une différence de pression de vapeur. Par conséquent, les molécules volatiles s'évaporent à l'interface liquide/vapeur de l'alimentation et se recondensent à l'interface liquide/vapeur du perméat plus froid.  2, record 1, French, - distillation%20membranaire%20%C3%A0%20contact%20direct

Record 1,  Textual support,  Spanish

Record number: 1, Textual support number: 1 CONT

[En la] destilación por membrana de contacto directo (DCMD), [...] tanto la corriente caliente vaporizante como la corriente condensada fría (corriente de destilado) están en contacto directo con la membrana.  1, record 1, Spanish, - destilaci%C3%B3n%20por%20membrana%20de%20contacto%20directo

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 DEF

A nucleus whose aqueous solution has an equilibrium vapour pressure lower than that of pure water.  2, record 2, English, - hygroscopic%20nucleus

Record number: 2, Textual support number: 1 CONT

The exact form taken by hygroscopic nuclei is most frequently that of droplets of solution. It was established by Lord Kelvin that the vapour pressure over the surface of a water drop in equilibrium with its surroundings is greater than that over a plane water surface. ... The vapour pressure over the surface of a solution is always less than that over pure water at the same temperature. For this reason, a solution is hygroscopic, and absorbs water vapour from the surrounding air, becoming diluted in the process. From this it follows that nuclei in the form of droplets of solution may be expected to be satisfactory condensation kerns. When particles of hygroscopic substances are exposed to sufficiently damp air, they become droplets of solution.  3, record 2, English, - hygroscopic%20nucleus

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 DEF

Noyau dont la solution aqueuse a une pression de vapeur en équilibre plus basse que celle de l'eau pure.  2, record 2, French, - noyau%20hygroscopique

Record 2,  Textual support,  Spanish

Record number: 2, Textual support number: 1 DEF

Núcleo cuya solución acuosa tiene una presión de vapor en equilibrio más baja que la del agua pura.  2, record 2, Spanish, - n%C3%BAcleo%20higrosc%C3%B3pico