Patent ID: 9022688
Filing Date: 2015-05-05
Classification: B09C

Abstract:
1. A method to form a subsurface permeation barrier, the method comprising: initially providing a surfactant material including at least one of a high pH surfactant solution and a buffered surfactant solution to a subsurface soil volume; providing at least one of a cathode electrode or an anode electrode adjacent to the surfactant material; placing the at least one of the cathode electrode or the anode electrode at a particular distance away from another cathode electrode or another anode electrode adjacent to the at least one of the cathode electrode or the anode electrode, wherein the particular distance is determined based on a permeation rate corresponding to at least one from a set of: a soil type, a soil density, and a pore size associated with the subsurface soil volume; permeating one or more portions of the subsurface soil volume with the surfactant material; providing an acidifying material including at least one of a low pH solution and an unbuffered solution adjacent to the at least one of the cathode electrode or the anode electrode; and permeating the one or more portions of the subsurface soil volume permeated by the surfactant material with the acidifying material such that the surfactant material adheres to soil particles in the subsurface soil volume in order to form the subsurface permeation barrier.