Method for distributing an aqueous solution containing a peroxygen in clay
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United States of America Patent
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May 31, 1988
Grant Date -
N/A
app pub date -
Aug 25, 1986
filing date -
Aug 25, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
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.
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