Patent ID: 6395190
Filing Date: 2002-05-28
Classification: B01D,C02F,C08K,Y10S

Abstract:
A process for purifying water or other filterable liquid to remove at least 99.5% of sub-micron particles from said water or other filterable liquid comprising filtering the water or other filterable liquid through the wall of an extruded, thin-walled activated carbon filter tube which has been extruded from a composition comprising an essentially homogeneous admixture of;(a) from about 75% to about 85% by weight activated carbon particles, and (b) from about 15% to about 25% by weight of a thermoplastic binder powder having an average particle size of from about 5 &mgr;m to about 25 &mgr;m; wherein the activated carbon particles comprise;(a) from about 18% to about 50% by weight of activated carbon particles passing through a 325 mesh screen, and (b) from about 50% to about 82% by weight of activated carbon particles passing through a 200 mesh screen and retained on a 325 mesh screen.