Patent ID: 7374367
Filing Date: 2008-05-20
Classification: B09B,B09C

Abstract:
1. A method for storing in a saturated zone a leaching-stabilized heavy metal-containing matrix that leaches heavy metal at no more than a preselected level, the method comprising the steps of: determining pH, adsorption-coprecipitation potential and oxidation-reduction potential of the heavy metal-containing matrix; determining pH, adsorption-coprecipitation potential and oxidation-reduction potential and flux of the pore water; treating a heavy metal-containing matrix with at least one of an agent for controlling pH, an agent for controlling oxidation-reduction potential, and an agent for controlling adsorption-coprecipitation in an amount sufficient to form the leaching-stabilized heavy metal-containing matrix; and flowing an agent for increasing the acid neutralization capacity (ANC) of the stabilized matrix into contact with the stabilized matrix, the flowing agent being provided in an amount sufficient to increase the permanence of the stabilized matrix to a preselected level.