The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 26, 2012
Filed:
Jun. 07, 2005
Hirohisa Yamada, Tsukuba, JP;
Kenji Tamura, Tsukuba, JP;
Junzo Tanaka, Tsukuba, JP;
Toshiyuki Ikoma, Tsukuba, JP;
Yasushi Suetsugu, Tsukuba, JP;
Yusuke Moriyoshi, Tokyo, JP;
Yujiro Watanabe, Tama, JP;
Hirohisa Yamada, Tsukuba, JP;
Kenji Tamura, Tsukuba, JP;
Junzo Tanaka, Tsukuba, JP;
Toshiyuki Ikoma, Tsukuba, JP;
Yasushi Suetsugu, Tsukuba, JP;
Yusuke Moriyoshi, Tokyo, JP;
Yujiro Watanabe, Tama, JP;
National Institute for Materials Science, Tsukuba-shi, JP;
Abstract
An adsorbent for radioelement-containing waste composed of the following spherical layered double hydroxide (A) or spherical metal hydroxide (B) is provided. (A) is a nonstoichiometric compound represented by general formula (a) or (b): [MM(OH)][A·mHO]. . . (a), [AlLi(OH)][A·mHO]. . . (b) wherein 0.1≦x≦0.4, 0<m, n represents a natural number of 1 to 4, Mrepresents at least one divalent metal, Mrepresents at least one trivalent metal, and Arepresents at least one n-valent ion-exchangeable anion, and (B) is a spherical metal hydroxide containing a metal selected from the group consisting of the metal atoms belonging to Group II, Group IV, Group V, Group VI, Group XI, Group XII, and Group XIII of the periodic table, and the group consisting of Mn, Fe, Co, Ni, Pb, and Bi. This adsorbent can efficiently adsorb and collect volatile iodine, a radioactive anion in wastewater, and the like, provides a solidified article having excellent crack resistance after a solidification treatment, and realizes effective confinement of the radioelement-containing waste and long-term stability thereof.