RadChem 2018

Session

NFC 1

NFC.1

14 May 2018, 13:30

Marble Hall (Casino Conference Centre)

Conveners

NFC 1

• Christian Ekberg (Nuclear Chemistry, Chalmers)
• Vaclava Havlova (UJV Rez, a.s.)

469. GENIORS, a European Project on Advanced Fuel Recycling Strategies — Consolidating the Outcome of Preceding Projects

Andreas Geist (Karlsruhe Institute of Technology (KIT))

14/05/2018, 13:30

Chemistry of Nuclear Fuel Cycle, Radiochemical Problems in Nuclear Waste Management

Verbal

The current open nuclear fuel cycle utilises only approximately one percent of the energy contained in natural uranium. Spent fuel recycling (as done e. g. in France) results in significantly increased fuel efficiency. Future multi-recycling strategies to be deployed in fast reactors will lead to further improvement, eventually rendering further uranium mining unnecessary if depleted uranium...

723. Lipophilic pyridine-2,6-bis(1H-1,2,3-triazol-4-yl) extractant for selective MA(III) extraction in SANEX-like processes

Annalisa Ossola (Politecnico di Milano)

14/05/2018, 13:45

Chemistry of Nuclear Fuel Cycle, Radiochemical Problems in Nuclear Waste Management

Verbal

With the perspective of improving nuclear energy fingerprint by reducing the waste volume and its long-term radiotoxicity, the Partitioning and Transmutation (P&T) strategy is being developed as a viable solution.[1, 2] Nowadays great efforts are constantly dedicated to the development of compact and efficient hydrometallurgical partitioning processes based on CHON compliant hydrophilic or...

766. Investigations of diluent effect on europium extraction behavior with TODGA

Ivan Kajan (Paul Scherrer Institute)

14/05/2018, 14:00

Chemistry of Nuclear Fuel Cycle, Radiochemical Problems in Nuclear Waste Management

Verbal

Extraction behavior of trivalent europium from nitric acid with N,N,N’,N’-tetraoctyl-diglycolamine (TODGA) in different diluents was investigated. Systematic evaluation of diluent influence on the extraction behavior was performed. Sets of secondary alcohols, ketones and alkanes with increasing carbon chain from 5 to 10 carbons were used as diluents in solvent extraction experiments....

624. Carbonate reprocessing of SNF in CARBEX-process

Alexander Boyarintcev

14/05/2018, 14:15

Chemistry of Nuclear Fuel Cycle, Radiochemical Problems in Nuclear Waste Management

Verbal

CARBEX-process, the concept of which was formulated in 2008 [1], is assigned to water methods and is an alternative one to the widely used PUREX-process. The developing method of uranium and mixed uranium-plutonium fuel processing is based on going from nitrate media widely used for purification of uranium and plutonium from FP and extraction to carbonate media.The significant difference of...

692. Closed nuclear fuel cycle based on the accelerator driven system

Prof. Zhi Qin (Institute of Modern Physics, Chinese Academy of Sciences)

14/05/2018, 14:30

Chemistry of Nuclear Fuel Cycle, Radiochemical Problems in Nuclear Waste Management

Verbal

With rapid growing of nuclear power plants in China, the safety management of spent fuel becomes most important issues. Accelerator Driven Sub-critical System (ADS) takes the spallation neutrons as external neutron source to drive the sub-critical reactor, which will provide the hard and wide neutron spectra, large flux and inherent safety. In order to increase the utilization rate of uranium...

575. Spectrophotometric analysis of synergic systems to replace tri-n-butyl phosphate (TBP) in used fuel reprocessing

Mr Adam Canner (University of Sheffield)

14/05/2018, 14:45

Chemistry of Nuclear Fuel Cycle, Radiochemical Problems in Nuclear Waste Management

Verbal

When irradiated nuclear fuel is dissolved in nitric acid and contacted with tri-n-butyl phosphate (TBP) during PUREX processing, many reactions can occur. There is the potential to form a range of insoluble species, especially when solutions are concentrated by evaporation, as occurs prior to high activity liquor storage or vitrification. By replacing TBP with CHON alternatives, many of the...