Studies on the transport of actinides and lanthanides through DHDECMPO based supported liquid membranes (SLM)
-
N. L. Dudwadkar
and
P. M. Gandhi
Abstract
This paper describes our studies on the partitioning of actinides from high level liquid waste of PUREX origin employing a supported liquid membrane technique. The process uses a solution of DHDECMPO in n-dodecane as a carrier with poly tetra fluoro ethylene support and a mixture of citric acid, formic acid and hydrazine hydrate as a receiving phase. Transport studies are carried out for 241Am under different experimental conditions to optimize the transport parameters such as feed acidity, carrier concentration and effect of uranium, Nd(III) and salt concentration in the feed. Studies indicated good transport of neptunium, americium and plutonium across the membrane from a nitric acid medium. Under the optimized conditions the transport of 241Am has been studied for uranium depleted synthetic PHWR-HLW and finally the technique is used for the partitioning of alpha emitters from an actual HLW after reprocessing. A high concentration of uranium in the feed is found to retard the transport of americium, suggesting the need of prior removal of uranium from the waste. Separation of actinides from uranium-lean simulated as well as actual HLW has been found to be feasible using the above described technique.
© 2013 by Walter de Gruyter Berlin Boston
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Articles in the same Issue
- Masthead
- Masthead
- Predictions of redox potentials of Sg in acid solutions as a function of pH
- Am(III) separation from acidic solutions by diamides of dipicolinic acid
- PC-88A – impregnated polymeric beads: Preparation, characterization and application for extraction of Pu(IV) from nitric acid medium
- Studies on the transport of actinides and lanthanides through DHDECMPO based supported liquid membranes (SLM)
- Applicability of Raman spectroscopy as a tool in nuclear forensics for analysis of uranium ore concentrates
- Study on the acid–base surface property of the magnetite graphene oxide and its usage for the removal of radiostrontium from aqueous solution
- Development of a radiothallium (III) labeld porphyrin complex as a potential imaging agent
- Sources of variability in the determination by evaporation method of gross alpha activity in water samples
