B - Operations – Transporting – 08 – B
Patent
B - Operations, Transporting
08
B
71/51, 71/55
B08B 3/08 (2006.01) B01D 11/02 (2006.01) B09C 1/02 (2006.01) B27K 3/00 (2006.01) C02F 11/08 (2006.01) A62D 3/00 (2006.01)
Patent
CA 1266573
ABSTRACT SOIL REVITALIZATION A process and an apparatus for the decontamination of industrial waste and the revitalization of soil containing industrial waste, having dioxins and/or polychlorinated aromatic compounds, without depletion of the valuable nutrient contained in said soil. The process comprises contacting a soil or industrial waste with supercritical carbon dioxide, an ecologically acceptable fluid, bringing the carbon dioxide to temperature and pressure to maintain said fluid in its supercritical state to dissolve the dioxins and/or polychlorinated aromatic compounds, while producing an insoluble and a soluble fraction. The soluble fraction is then separated from the insoluble fraction. The insoluble fraction contains the decontaminated industrial waste and/or soil and trace amount of an ecologically compatible fluid. The pressure-temperature conditions of the soluble fraction are then modified to cause the carbon dioxide in supercritical fluid to vaporize and separate from the soluble dioxins and/or polychlorinated aromatic com- pounds. An apparauts is also disclosed, as well as means to recycle industrial waste. The process is unique in that it would permit the revitalization of soils around various industrial sites such as chemical plants, oil exploration and production fields, beaches contaminated by oil spills, and the recovery and recycling of industrial waste.
498093
Avedesian Michael M.
Limonchik Abe
Torossian Hosep
Avedesian Michael M.
Domtar Inc.
Gauvin Antoine H.
Limonchik Abe
Torossian Hosep
LandOfFree
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