Patent
Method of extraction, trapping and storage of radioactive iodine contained in irradiated nuclear fuels
Reads0
Chats0
TLDR
In this paper, after dissolving irradiated nuclear fuel in a nitric acid medium, the vapor produced by this dissolution and consisting of water, nitrogen oxides and iodine is passed into a condenser, then into a column for the absorption of the nitrous vapor in which is formed recombined nitric acids containing iodine and nitrous ions, the iodine contained in the recombined acid being then separated out.Abstract:
After dissolving irradiated nuclear fuel in a nitric acid medium, the vapor produced by this dissolution and consisting of water, nitrogen oxides and iodine is passed into a condenser, then into a column for the absorption of the nitrous vapor in which is formed recombined nitric acid containing iodine and nitrous ions, the iodine contained in the recombined acid being then separated-out. The nitrous ions present in the recombined acid have a favorable influence on the important first stage of that separation.read more
Citations
More filters
Patent
Process for the removal of iodine and organic iodine compounds from gases and vapors using silver-containing zeolite of the faujasite type
TL;DR: Iodine and organic iodine compounds which may be radioactive and which might be found in waste gases or vapors from nuclear reactors can be removed by passing the iodine or organic iodine compound-containing gases and vapors through a layer of binder-free silver-exchanged molecular sieve granulates of the faujasite type as discussed by the authors.
Patent
Method of treatment of high-level radioactive waste
TL;DR: In this article, a method of treatment of a high-level radioactive waste containing platinum group elements is provided, in which boron and a bororon compound is added to a calcined material of the high level radioactive waste in an amount of 5 to 10% by weight in terms of BORON as a simple substance.
Patent
Adsorbent for and method of removing iodine compounds
Inoue Takehisa,Hiromi Shiomi +1 more
TL;DR: Iodine and iodine compounds are removed by using an adsorbent comprising a silver loaded pentasil zeolite as discussed by the authors, which is used to remove the iodine compounds.
Patent
Method for separating and collecting iodine
TL;DR: A process for separating and collecting iodine from a liquid phase comprising adding an acid is to the liquid phase, and then conducting liquid phase through an activated carbon filter is described in this article.
Patent
Techniques for on-demand production of medical isotopes such as mo-99/tc-99m and radioactive iodine isotopes including i-131
TL;DR: In this paper, a system for radioisotope production uses fast-neutron-caused fission of depleted or naturally occurring uranium targets in an irradiation chamber.
References
More filters
Patent
Method and composition for removing iodine from gases
TL;DR: In this paper, a method and composition for removing iodine and organic iodides from an iodine-containing off-gas stream is provided, where a ceramic material impregnated with a mixture of a metallic salt with a water-soluble secondary amine is used.
Patent
Method for removing iodine from nitric acid
Cathers G,Shipman C +1 more
TL;DR: In this paper, a method for removing small amounts of radioactive iodine from a NITRIC ACID solution by isotopically doubting the IODINE, pushing the solution with OZONE, and separating the iodine from the solution.
Patent
Process for the extraction of fission products
TL;DR: In this article, a process for the extraction of fission products contained in irradiated nuclear fuel elements which have been subject to a temperature of at least 1200°C during their irradiation prior to dissolving the fuel by the wet process is described.