Hydrotalcite like substance, process for producing the same and method of immobilizing hazardous substance

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United States of America Patent

PATENT NO 9216310
APP PUB NO 20140039236A1
SERIAL NO

14052400

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Abstract

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A hydrotalcite-like substance capable of ion exchange with target anions, being of small crystal size that exhibits large basal spacing and excels at anion exchange performance; a process for producing the same; and a method of immobilizing hazardous substances. The hydrotalcite-like substance is produced by mixing an acidic solution containing aluminum and magnesium ions with an alkaline solution containing an alkali to synthesize a hydrotalcite-like substance, followed by, without ageing, water removal or neutralization. The molar ratio of aluminum ions and magnesium ions is preferably in the range of 1:5 to 1:2. Hazardous substances can be immobilized by pulverizing the hydrotalcite-like substance after synthesis and adding the powder to a subject, or adding a hydrotalcite-like substance in slurry form to a subject, or carrying out addition so as to cause the synthesis directly at the position of the subject. Furthermore, anion adsorption can be performed by a filter containing the hydrotalcite-like substance.

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Patent Owner(s)

Patent OwnerAddress
JDC CORPORATIONC/O JDC CORPORATION HULIC KAMIYACHO BLDG 5TH FLOOR 4-3-13 TORANOMON TOKYO 105-8467

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Takahashi, Mai Tokyo, JP 4 3
Yamazaki, Atsushi Tokyo, JP 140 679

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