Direct Selective Extraction of Actinides(III) from PUREX Raffinate Using a Mixture of CyMe4-BTBP and TODGA as 1-cycle SANEX Solvent PART II: Flow-sheet Design for a Counter-Current Centrifugal Contactor Demonstration Process

2013 ◽  
Vol 31 (1) ◽  
pp. 1-11 ◽  
Author(s):  
Daniel Magnusson ◽  
Andreas Geist ◽  
Andreas Wilden ◽  
Giuseppe Modolo
Keyword(s):  
Selective Extraction ◽  
Flow Sheet ◽  
Centrifugal Contactor ◽  
Counter Current

Direct Selective Extraction of Actinides (III) from PUREX Raffinate using a Mixture of CyMe4BTBP and TODGA as 1-cycle SANEX Solvent Part III: Demonstration of a Laboratory-Scale Counter-Current Centrifugal Contactor Process

2013 ◽  
Vol 31 (5) ◽  
pp. 519-537 ◽  
Author(s):  
Andreas Wilden ◽  
Giuseppe Modolo ◽  
Christian Schreinemachers ◽  
Fabian Sadowski ◽  
Steve Lange ◽  
...  
Keyword(s):  
Selective Extraction ◽  
Laboratory Scale ◽  
Centrifugal Contactor ◽  
Counter Current

scholarly journals Homogenous recycling of transuranium elements from irradiated fast reactor fuel by the EURO-GANEX solvent extraction process

2019 ◽  
Vol 107 (9-11) ◽  
pp. 917-929 ◽  
Author(s):  
Rikard Malmbeck ◽  
Daniel Magnusson ◽  
Stéphane Bourg ◽  
Michael Carrott ◽  
Andreas Geist ◽  
...  
Keyword(s):  
Solvent Extraction ◽  
Fast Reactor ◽  
Feed Solution ◽  
Extraction Process ◽  
Reactor Fuel ◽  
Acetohydroxamic Acid ◽  
Flow Sheet ◽  
Transuranium Elements ◽  
Fast Reactor Fuel ◽  
Centrifugal Contactor

Abstract The EURO-GANEX process was developed for co-separating transuranium elements from irradiated nuclear fuels. A hot flow-sheet trial was performed in a counter-current centrifugal contactor setup, using a genuine high active feed solution. Irradiated mixed (carbide, nitride) U80Pu20 fast reactor fuel containing 20 % Pu was thermally treated to oxidise it to the oxide form which was then dissolved in HNO3. From this solution uranium was separated to >99.9 % in a primary solvent extraction cycle using 1.0 mol/L DEHiBA (N,N-di(2-ethylhexyl)isobutyramide in TPH (hydrogenated tetrapropene) as the organic phase. The raffinate solution from this process, containing 10 g/L Pu, was further processed in a second cycle of solvent extraction. In this EURO-GANEX flow-sheet, TRU and fission product lanthanides were firstly co-extracted into a solvent composed of 0.2 mol/L TODGA (N,N,N′,N′-tetra-n-octyl diglycolamide) and 0.5 mol/L DMDOHEMA (N,N′-dimethyl-N,N′-dioctyl-2-(2-hexyloxy-ethyl) malonamide) dissolved in Exxsol D80, separating them from most other fission and corrosion products. Subsequently, the TRU were selectively stripped from the collected loaded solvent using a solution containing 0.055 mol/L SO3-Ph-BTP (2,6-bis(5,6-di(3-sulphophenyl)-1,2,4-triazin-3-yl)pyridine tetrasodium salt) and 1 mol/L AHA (acetohydroxamic acid) in 0.5 mol/L HNO3; lanthanides were finally stripped using 0.01 mol/L HNO3. Approximately 99.9 % of the TRU and less than 0.1 % of the lanthanides were found in the product solution, which also contained the major fractions of Zr and Mo.

Hot test of partitioning strontium from high-level liquid waste (HLLW) by dicyclohexano-18crown-6 (DCH18C6)

2001 ◽  
Vol 89 (3) ◽  
Author(s):  
W. Jianchen ◽  
S. Chongli
Keyword(s):  
Crown Ether ◽  
Liquid Waste ◽  
Current Mode ◽  
Feed Solution ◽  
High Level Liquid Waste ◽  
Trpo Process ◽  
Centrifugal Contactor ◽  
High Level ◽  
Counter Current ◽  
Hot Test

The crown ether strontium extraction(CESE) process for partitioning strontium from HLLW was studied. A hot test was carried out in a counter current mode with genuine HLLW by using a miniature centrifugal contactor set. 0.1 mol/L DCH18C6 in 1-octanol was used as extractant. The feed solution was the HLLW raffinate of TRPO process after removing TRU elements. Acidity of the feed was 1.45 mol/L HNO

Demonstration of a TODGA‐Based Continuous Counter‐Current Extraction Process for the Partitioning of Actinides from a Simulated PUREX Raffinate, Part II: Centrifugal Contactor Runs

2008 ◽  
Vol 26 (1) ◽  
pp. 62-76 ◽  
Author(s):  
Giuseppe Modolo ◽  
Hanna Asp ◽  
Hendrik Vijgen ◽  
Rikard Malmbeck ◽  
Daniel Magnusson ◽  
...  
Keyword(s):  
Extraction Process ◽  
Centrifugal Contactor ◽  
Counter Current

Validation of the flow-sheet proposed for reprocessing of AHWR spent fuel: Counter-current studies using TBP

2012 ◽  
Vol 38 ◽  
pp. 184-189 ◽  
Author(s):  
Prem Singh Dhami ◽  
Poonam Jagasia ◽  
Surajit Panja ◽  
Prashant Waman Naik ◽  
Padinhare Variam Achuthan ◽  
...  
Keyword(s):  
Flow Sheet ◽  
Spent Fuel ◽  
Counter Current

Mixer-settler runs for the evaluation of tri-iso-amyl phosphate (TiAP) as an alternate extractant to tri-n-butyl phosphate (TBP) for reprocessing applications

2015 ◽  
Vol 103 (2) ◽  
Author(s):  
A. Suresh ◽  
B. Sreenivasulu ◽  
S. Jayalakshmi ◽  
S. Subramaniam ◽  
K. N. Sabharwal ◽  
...  
Keyword(s):  
Solvent Extraction ◽  
Flow Sheet ◽  
Profile Data ◽  
Radioactive Materials ◽  
Fast Reactor Fuel ◽  
Continuous Solvent Extraction ◽  
Extraction Processes ◽  
Set Up ◽  
Counter Current ◽  
Fuel Reprocessing

AbstractAs part of the studies on the development of alternate extractants for fast reactor fuel reprocessing, a mixer-settler facility for performing counter-current solvent extraction runs with radioactive materials has been set up and commissioned in our laboratory for flow sheet development experiments. Mixer-settler runs were carried out with 1.1 M TiAP/Heavy Normal Paraffin (HNP) as the solvent using the above facility to test the equipment as well as the behaviour of the solvent for continuous solvent extraction processes. Stage profile data generated for the extraction and stripping of nitric acid with TiAP based solvent have been reported. Studies carried out on the continuous counter-current extraction and stripping of U(VI) for 1.1 M TiAP/HNP-U(VI)-HNO

scholarly journals Additive Manufacturing Fabrication of PEEK Counter-Current Centrifugal Contactor Components

2019 ◽  
Author(s):  
Peter Kozak ◽  
Brian Saboriendo ◽  
Peter Tkac
Keyword(s):  
Additive Manufacturing ◽  
Centrifugal Contactor ◽  
Counter Current

Resource utilization of titanium-containing slurry by selective extraction and leaching

2018 ◽  
Vol 115 (5) ◽  
pp. 504 ◽  
Author(s):  
Xiaoyan Xiang ◽  
Wentang Xia ◽  
Jianguo Yin
Keyword(s):  
High Temperature ◽  
Resource Utilization ◽  
Selective Extraction ◽  
Titanium Content ◽  
Evaporation Residue ◽  
Leaching Test ◽  
Whole Process ◽  
Leaching Residue ◽  
Titanium Oxychloride ◽  
Counter Current

Resource utilization of titanium-containing slurry was realized by selective extraction and leaching. The results from the experiment confirmed that thistechnology was effective for recycling titanium and niobium from the slurry. During selective extraction, the extract solution with titanium content of 159.40 g/L was obtained after 3 stage-counter current extractions, and the titanium content of extracted residue could be reduced to 1.85 wt% which was much lower than the titanium content of titanium-containing slurry. The results of evaporation experiments indicated that CH2Cl2 in extracted residue could be separated and recovered effectively by evaporation and high temperature is beneficial for the whole process. Meanwhile, the titanium oxide and titanium oxychloride in extracted residue could also be transformed into TiCl4 and recovered by evaporation as the evaporation of dichloromethane in extracted residue. The beneficiation of niobium could be achieved when the evaporated residue was leached with diluted hydrochloric acid, the results of leaching test showed that more than 97% of the aluminum in evaporation residue was dissolved, while, only 1.3% of the niobium was leached. Finally, niobium concentrate with Nb2O5 content of 76.39% was obtained by washing the leaching residue with dilute ammonia water.

Laboratory-Scale Counter-Current Centrifugal Contactor Demonstration of an Innovative-SANEX Process Using a Water Soluble BTP

2014 ◽  
Vol 33 (2) ◽  
pp. 91-108 ◽  
Author(s):  
Andreas Wilden ◽  
Giuseppe Modolo ◽  
Peter Kaufholz ◽  
Fabian Sadowski ◽  
Steve Lange ◽  
...  
Keyword(s):  
Water Soluble ◽  
Laboratory Scale ◽  
Centrifugal Contactor ◽  
Counter Current
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