Organoclay compositions for purifying contaminated liquids and methods for making and using them
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United States of America Patent
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Sep 30, 2003
Grant Date -
Jan 23, 2003
app pub date -
Apr 24, 2001
filing date -
Apr 24, 2001
priority date (Note) -
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Abstract
The current invention describes organoclay compositions and methods of using them for removing impurities from contaminated liquids. The compositions are formed by contacting an attapulgite, sepiolite, or zeolite clay mineral with an alkylamine base. The method of use involves contacting the organoclay composition with a contaminated liquid, such as oil in water, allowing the organoclay to absorb the contaminants. The organoclay can be in the form of a granular solid for inline filter applications, or it can be a finely divided powder for other applications.
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