EP 0475635 B1 19941214 - Method for removing cesium from aqueous solutions of high nitric acid concentration.
Title (en)
Method for removing cesium from aqueous solutions of high nitric acid concentration.
Title (de)
Verfahren zum Entfernen von Cesium aus wässrigen Lösungen mit hoher Salpetersäurekonzentration.
Title (fr)
Procédé pour enlever le cesium de solutions aqueuses ayant une haute concentration en acide nitrique.
Publication
Application
Priority
- JP 14227291 A 19910329
- JP 24042090 A 19900910
Abstract (en)
[origin: EP0475635A1] A method for removing cesium, e.g., radioactive nuclides of cesium, from an aqueous solution containing nitric acid in high concentration, such as a high-level radioactive waste solution from the Purex process, comprising sorption on an insoluble ferrocyanide compound as the sorbent, wherein the aqueous solution is mixed with a small amount of a specific oxidation-preventing agent selected from hydrazinium compounds, amidosulphonic acid compounds and several other compounds which do not necessarily have high reducing activity for ferricyanides into ferrocyanides.
IPC 1-7
IPC 8 full level
G21F 9/12 (2006.01)
CPC (source: EP)
G21F 9/12 (2013.01)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0475635 A1 19920318; EP 0475635 B1 19941214; DE 69105884 D1 19950126; DE 69105884 T2 19950504
DOCDB simple family (application)
EP 91307879 A 19910828; DE 69105884 T 19910828