B - Operations – Transporting – 09 – B
Patent
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B09B 5/00 (2006.01) B09C 1/10 (2006.01) C09K 8/035 (2006.01) C09K 8/60 (2006.01) C22B 3/00 (2006.01) C22B 3/04 (2006.01) C22B 3/18 (2006.01)
Patent
CA 1280278
METHOD FOR DISTRIBUTING AN AQUEOUS SOLUTION CONTAINING A PEROXYGEN IN CLAY ABSTRACT OF THE DISCLOSURE The present invention is a method for distributing a colloid-free, aqueous solution containing a peroxygen compound in a particulate matter containing clay without causing the clay to swell. It has been found that hydrogen peroxide alone causes swelling of clays. It is well known that monovalent ions cause clays to disperse and swell. It is unexpected to find that perborate and persulfate anions do not cause clays to swell, even in the presence of sodium ions. The process is useful for enhancing the biodegradation of contaminants in clayey soils or for winning mineral values from clayey ore deposits.
543839
Brown Richard A.
Norris Robert D.
Richards Joseph C.
International Technology Corporation
Osler Hoskin & Harcourt Llp
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