Patent ID: 8226830
Filing Date: 2012-07-24
Classification: B01J,B82Y,C02F,Y10T

Abstract:
1. A method for purifying aqueous liquids containing contaminant particles selected from the group consisting of clay particles and silica particles, the method comprising: contacting said aqueous liquid containing said contaminant particles with a particle pack comprising substrate particles and comparatively smaller particulate additives; wherein the substrate particles are comparatively larger than the particulate additive and are selected from the group consisting of sand, gravel, ceramic beads, glass beads, and combinations thereof, where the particulate pack is at least partially coated with a coating agent comprising a carrier fluid selected from the group consisting of alcohol, glycol, polyol, vegetable oil, mineral oil, and combinations thereof, and the particulate additive; wherein the particulate additives have a mean particle size of 1000 nm or less, and consist of magnesium oxide; and attracting said contaminant particles from the aqueous liquid to the particulate additive to purify the aqueous liquid.