Understanding the recovery of Ruthenium from acidic feeds by oxidative solvent extraction studies
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Parveen Kumar Verma
Abstract
Ruthenium (106Ru), a notorious fission product in nuclear reprocessing cycle, which gets partitioned at each step needs to be recovered. The recovery of Ru from acidic high level waste (HLW) is of great importance to the nuclear fuel cycle. Quantitative recovery of Ru was achieved from acidic feeds using oxidative trapping mechanism strategy where NaIO4 was used as an oxidant to convert different species of Ru in acidic phase to RuO4 while n-dodecane was used as trapping agent for RuO4. Stripping was attempted using NaOH and NaClO mixture. Attempt was made to optimize various parameters for 103Ru extraction and stripping. 103Ru tracer spiked simulated high level waste was used to understand the 103Ru behaviour in actual waste. The composition of stripping solution (alkaline hypochlorite) was also optimized to have >95% Ru into the aqueous phase in ca. 180 min.
Acknowledgement
The authors thank Dr. P.K. Pujari, Head, Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai, India for his keen interest in this work.
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©2019 Walter de Gruyter GmbH, Berlin/Boston
Articles in the same Issue
- Frontmatter
- Separation of neptunium from actinides by monoamides: a solvent extraction study
- Adsorption of Th(IV) on the modified multi-walled carbon nanotubes using central composite design
- Sorption of Cs(I) on Fe-montmorillonite relevant to geological disposal of HLW
- Sorption behavior of Co-radionuclides from radioactive waste solution on graphene enhanced by immobilized sugarcane and carboxy methyl cellulose
- Preparation of chitosan functionalized polyamidoamine for the separation of trivalent lanthanides from acidic waste solution
- Understanding the recovery of Ruthenium from acidic feeds by oxidative solvent extraction studies
- Radiochemical evidence for the contribution of iron (using 59Fe) remobilization efficiency towards nitrogen (N) and Fe deficiency tolerance in wheat
- Studies on the radiolytic degradation of N,N-dioctyl-2-hydroxyacetamide using dynamic light scattering and ATR-FTIR spectroscopy
Articles in the same Issue
- Frontmatter
- Separation of neptunium from actinides by monoamides: a solvent extraction study
- Adsorption of Th(IV) on the modified multi-walled carbon nanotubes using central composite design
- Sorption of Cs(I) on Fe-montmorillonite relevant to geological disposal of HLW
- Sorption behavior of Co-radionuclides from radioactive waste solution on graphene enhanced by immobilized sugarcane and carboxy methyl cellulose
- Preparation of chitosan functionalized polyamidoamine for the separation of trivalent lanthanides from acidic waste solution
- Understanding the recovery of Ruthenium from acidic feeds by oxidative solvent extraction studies
- Radiochemical evidence for the contribution of iron (using 59Fe) remobilization efficiency towards nitrogen (N) and Fe deficiency tolerance in wheat
- Studies on the radiolytic degradation of N,N-dioctyl-2-hydroxyacetamide using dynamic light scattering and ATR-FTIR spectroscopy
