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Title:
ADSORBENT FOR RADIOACTIVE ELEMENT-CONTAINING WASTE, AND METHOD OF IMMOBILIZING RADIOACTIVE ELEMENT
Document Type and Number:
Japanese Patent JP2005345448
Kind Code:
A
Abstract:

To provide an adsorbent capable of adsorption-collecting efficiently volatile iodine, radioactive anions in effluent, or the like, and having excellent crack resistance of a solidified body after solidification treatment, and a method of immobilizing a radioactive element-containing waste capable of providing an encapsulation property of the radioactive element-containing waste and long term stability.

This adsorbent for the radioactive element-containing waste comprises spherical lamellar double hydroxide of a nonstoichiometric compound expressed by general formulas (a): [M2+1-x M3+x(OH)2]x+[An-x/n-mH2O]x-, (b): [Al2Li(OH)6]x+[An-x/n-mH2O]x-, where 0.1≤x≤0.4, and 0<m; n is a natural number of 1-4; M2+ represents at least one kind of divalent metals; M3+ represents at least one kind of trivalent metals; and An- represents at least one kind of n-valent of ion-exchangeable anions.


Inventors:
YAMADA HIROHISA
TAMURA TAKASHI
TANAKA JUNZO
IKOMA TOSHIYUKI
SUETSUGU YASUSHI
MORIYOSHI YUSUKE
WATANABE YUJIRO
Application Number:
JP2004169135A
Publication Date:
December 15, 2005
Filing Date:
June 07, 2004
Export Citation:
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Assignee:
NAT INST FOR MATERIALS SCIENCE
International Classes:
G21F9/12; B01J20/02; B01J20/08; G21F9/02; G21F9/16; G21F9/30; (IPC1-7): G21F9/12; B01J20/02; B01J20/08; G21F9/02; G21F9/16; G21F9/30
Domestic Patent References:
JP2005345449A2005-12-15
JPS60161744A1985-08-23
JP2001091694A2001-04-06
JP2000056089A2000-02-25
JP2003321771A2003-11-14



 
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