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:
Jan. 18, 2005
Filed:
May. 30, 2003
Etsushu Kuraoka, Chiba, JP;
Anyun Zhang, Chiba, JP;
Mikio Kumagai, Chiba, JP;
Masayuki Watanabe, Ibaraki, JP;
Hirofumi Nakamura, Ibaraki, JP;
Etsushu Kuraoka, Chiba, JP;
Anyun Zhang, Chiba, JP;
Mikio Kumagai, Chiba, JP;
Masayuki Watanabe, Ibaraki, JP;
Hirofumi Nakamura, Ibaraki, JP;
Institute of Research and Innovation, Tokyo, JP;
Japan Nuclear Cycle Development Institute, Ibaraki, JP;
Abstract
A method of separation and recovery of elements from radioactive liquid wastes, includes a step of bringing into contact a high-level radioactive liquid waste containing separation target elements including Americium, Curium, Zirconium, Molybdenum, Palladium and rare earth elements with solid absorbent containing organophosphorus compounds so that the separation target elements are absorbed in the solid absorbent, a step of bringing into contact the solid absorbent with an acidic solution containing diethylenetriaminepentaacetic acid so that Americium, Curium, Zirconium, Molybdenum, Palladium and heavy rare earth elements are eluted from the solid absorbent, and a step of bringing into contact the solid absorbent underwent the first elution step with water or dilute nitric acid so that light rare earth elements are eluted from the solid absorbent. With the method, elements, which include Americium, Curium, Zirconium, Molybdenum, Palladium and rare earth elements, are efficiently and economically separated and recovered from the radioactive liquid waste.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile