Process for the solvent extraction for the radiolysis and dehalogenation of halogenated organic compounds in soils, sludges, sediments and slurries
AssigneeClean Earth Technologies, LLC
InventorJeffry Golden
Life of this patent
Estimating the term…
Abstract
A process of extracting halogenated organic compounds, and particularly PCBs, from soil, sediment, slurry, sludge and dehalogenating the compounds contacts a contaminated soil sample with an extraction medium of a mixture of an alkane and a water miscible alcohol. The organic compounds dissolve in the extraction medium which is separated from the soil by passing water upwardly through the soil. The extraction medium floats to the surface of the water and is separated. Thereafter, the extraction medium containing the halogenated organic contaminants is subjected to ionizing radiation to radiolytically dehalogenate the compounds.
Claims11
An apparatus for delivering a substantially uniform ionizing radiation dose to a fluid, said apparatus comprising:
- an outer containment tank having an outer wall, a fluid inlet and a fluid outlet;
- an inner drum rotatably mounted in said outer containment tank, said inner drum having a wall spaced from said outer wall to define a substantially annular fluid containment area;
- a motor for rotating said inner drum with respect to said outer containment tank for producing an azimuthal velocity of fluid in said annular containment area;
- a turbulence producing device in said annular area for introducing turbulence in fluid contained in said annular area;
- and
- an ionizing radiation source disposed outside said outer containment tank for directing ionizing radiation into said annular containment area,
- wherein said ionizing radiation source is selected from the group consisting of:
- an electron accelerator, a gamma-ray source, an X-ray source, and an ion beam source.
Dependencies are inferred from the claim text.