Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
March 29, 2011
Patent Application Number
12375003
Date Filed
July 24, 2007
Patent Primary Examiner
Patent abstract
A procedure for the on-site reduction to a predetermined level of the concentration of hexavalent chromium in a saturated or unsaturated contaminated area or ground, in which an in-depth treatment of this area or ground is carried out with a predetermined quantity of a gaseous mixture consisting of hydrogen and another inert gas in order to chemically reduce the hexavalent chromium to a state of lower valence, in particular to the state of trivalent chromium.
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