Patent ID: 7670277
Filing Date: 2010-03-02
Classification: B09B,C02F,C04B,E21B,Y02W

Abstract:
1. A method for solidification of an aqueous waste material containing heavy metals or hazardous organic contaminants comprising mixing a layered phyllosilicate consisting of a water swellable smectite clay, into said aqueous waste material in an amount sufficient to solidify the aqueous waste material sufficiently such that the solidified aqueous waste material has essentially no free liquid, as determined by the solidified aqueous waste material passing the Paint Filter Liquids Test, EPA Method 9095B; shearing the aqueous waste material, containing said layered phyllosilicate, sufficiently to partially exfoliate the layered phyllosilicate into phyllosilicate platelets and tactoids while in contact with the aqueous waste material; and pumping the sheared wasted material to a solidification area or transport vehicle for solidification.