Abstract: Methods are provided for the removal of sulfur and other ARD/AMD-generating materials through the smoldering combustion of an organic material. The methods comprise admixing an ARD/AMD-generating porous matrix material with an organic material to produce a mixture, exposing the mixture to an oxidant, and initiating a self-sustaining smoldering combustion of the mixture. Additional embodiments aggregate the organic material or ARD/AMD-generating porous matrix material or mixture thereof in an impoundment such as a reaction vessel, depression or matrix pile. Further embodiments utilize at least one heater to initiate combustion and at least one air supply port to supply oxidant to initiate and maintain combustion.

Abstract: Methods are provided for the removal of sulfur and other ARD/AMD-generating materials through the smoldering combustion of an organic material. The methods comprise admixing an ARD/AMD-generating porous matrix material with an organic material to produce a mixture, exposing the mixture to an oxidant, and initiating a self-sustaining smoldering combustion of the mixture. Additional embodiments aggregate the organic material or ARD/AMD-generating porous matrix material or mixture thereof in an impoundment such as a reaction vessel, depression or matrix pile. Further embodiments utilize at least one heater to initiate combustion and at least one air supply port to supply oxidant to initiate and maintain combustion.

Abstract: Methods are provided for the volumetric reduction of organic liquids. The methods comprise admixing a porous matrix material with an organic liquid to produce a mixture, forcing oxidant through the mixture, and initiating a self-sustaining smoldering combustion of the mixture. Additional embodiments aggregate the organic liquid or porous matrix material or mixture thereof in an impoundment such as a reaction vessel, lagoon or matrix pile. Further embodiments utilize at least one heater to initiate combustion and at least one air supply port to supply oxidant to initiate and maintain combustion. Yet further embodiments comprise the batch addition of a fuel additive to the aggregate prior to smoldering to ensure that the ensuing smoldering combustion is self-sustaining or of the required temperature to reduce or remove other contaminants in the matrix or organic liquid such as heavy metals or asbestos.

Abstract: A method for remediating land contaminated by a combustible material, in particular, land contaminated with non-aqueous phase liquids (NAPLs), which includes the steps of locating a subterranean volume of combustible material such as a DNAPL in land to be remediated, and igniting the combustible material to combust the material and thereby remediate the land. By monitoring combustion of the material, combustion may be optimised by, for example, supplying an oxidant or a combustion suppressant.

Abstract: A method for remediating land contaminated by a combustible material, in particular, land contaminated with non-aqueous phase liquids (NAPLs), which includes the steps of locating a subterranean volume of combustible material such as a DNAPL in land to be remediated, and igniting the combustible material to combust the material and thereby remediate the land. By monitoring combustion of the material, combustion may be optimised by, for example, supplying an oxidant or a combustion suppressant.