Membrane distillation modules using oleophobically and antimicrobially treated microporous membranes

摘要

The present invention provides a system for liquid distillation which includes a vapor permeable-liquid impermeable microporous membrane having structures defining a plurality of pores, an oleophobic material that is applied to the structures of the membrane so as to leave the plurality of pores open, a means for supplying non-distilled liquid to the first side of the membrane, and a means for collecting distilled liquid from a second side of the membrane. In a further example, the present invention provides a method for the distillation of liquids.

主权项

1. A system for liquid distillation, the system including:
a vapor permeable-liquid impermeable microporous membrane having structures defining a plurality of pores, the vapor permeable-liquid impermeable microporous membrane comprising an anti-microbial material; an oleophobic material, the oleophobic material applied to the structures of the microporous membrane so as to leave the plurality of pores open wherein said oleophobic material is a perfluoroalkyl acrylic copolymer; wherein the vapor permeable-liquid impermeable microporous membrane has a moisture vapor transmission rate (MVTR) of at least 25,000 grams/m2/day determined by JISL-1099B2 testing means for supplying non-distilled liquid to the first side of the vapor permeable-liquid impermeable microporous membrane; and means for collecting distilled liquid from a second side of the vapor permeable-liquid impermeable microporous membrane.