Title:
ハイドロタルサイト様物質およびその製造方法、ならびに有害物質の固定化方法
Document Type and Number:
Japanese Patent JP4036237
Kind Code:
B2
Abstract:
A hydrotalcite-like substance that is capable of ion exchange with target anions, being of small crystal size and that exhibits large basal spacing, excelling in anion exchange performance; a process for producing the same; and a method of immobilizing hazardous substances. A hydrotalcite-like substance is produced by mixing an acidic solution containing aluminum ions and magnesium ions with an alkaline solution containing an alkali to thereby 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.
Inventors:
Junji Yamazaki
Mai Takahashi
Mai Takahashi
Application Number:
JP2006511055A
Publication Date:
January 23, 2008
Filing Date:
March 16, 2005
Export Citation:
Assignee:
Waseda University
Japan Land Development Co., Ltd.
Japan Land Development Co., Ltd.
International Classes:
A62D3/33; B01J20/08; B01J20/18; B01J41/02; B01J41/10; B09B3/00; B09C1/02; B09C1/08; C01F7/785; C02F1/28; C02F1/42
Domestic Patent References:
| JP52003353B1 | ||||
| JP48029478B1 | ||||
| JP4008747A | ||||
| JP2000233188A | ||||
| JP2001269664A | ||||
| JP2006511423A | ||||
| JP6329410A | ||||
| JP2000264626A | ||||
| JP2000290451A | ||||
| JP2003026418A | ||||
| JP2003146651A | ||||
| JP2003341228A |
Attorney, Agent or Firm:
Mamoru Ushiki