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DEHBA (di-2-ethylhe...
DEHBA (di-2-ethylhexylbutyramide) gamma radiolysis under spent nuclear fuel solvent extraction process conditions
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- Horne, Gregory P. (author)
- Idaho Natl Lab, Ctr Radiat Chem Res, POB 1625, Idaho Falls, ID 83415 USA.
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- Mezyk, Stephen P. (author)
- Calif State Univ Long Beach, Dept Chem & Biochem, 1250 Bellflower Blvd, Long Beach, CA 90840 USA.
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- Mincher, Bruce J. (author)
- Idaho Natl Lab, Ctr Radiat Chem Res, POB 1625, Idaho Falls, ID 83415 USA.
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- Zarzana, Christopher A. (author)
- Idaho Natl Lab, Ctr Radiat Chem Res, POB 1625, Idaho Falls, ID 83415 USA.
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- Rae, Cathy (author)
- Idaho Natl Lab, Ctr Radiat Chem Res, POB 1625, Idaho Falls, ID 83415 USA.
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- Tillotson, Richard D. (author)
- Idaho Natl Lab, Ctr Radiat Chem Res, POB 1625, Idaho Falls, ID 83415 USA.
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- Schmitt, Nicholas C. (author)
- Idaho Natl Lab, Ctr Radiat Chem Res, POB 1625, Idaho Falls, ID 83415 USA.
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- Ball, Richard D. (author)
- Idaho Natl Lab, Ctr Radiat Chem Res, POB 1625, Idaho Falls, ID 83415 USA.
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- Ceder, Joakim (author)
- KTH,Kemiteknik,Idaho Natl Lab, Ctr Radiat Chem Res, POB 1625, Idaho Falls, ID 83415 USA
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- Charbonnel, Marie-Christine (author)
- Univ Montpellier, DEN, DMRC, CEA, Marcoule, France.
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- Guilbaud, Philippe (author)
- Univ Montpellier, DEN, DMRC, CEA, Marcoule, France.
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- Saint-Louis, George (author)
- Univ Montpellier, DEN, DMRC, CEA, Marcoule, France.
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- Berthon, Laurence (author)
- Univ Montpellier, DEN, DMRC, CEA, Marcoule, France.
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Idaho Natl Lab, Ctr Radiat Chem Res, POB 1625, Idaho Falls, ID 83415 USA Calif State Univ Long Beach, Dept Chem & Biochem, 1250 Bellflower Blvd, Long Beach, CA 90840 USA. (creator_code:org_t)
- Elsevier, 2020
- 2020
- English.
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In: Radiation Physics and Chemistry. - : Elsevier. - 0969-806X .- 1879-0895. ; 170
- Related links:
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https://www.osti.gov...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- Di-2-ethylhexylbutyramide (DEHBA) has been proposed as part of a hydro-reprocessing solvent extraction system for the co-extraction of uranium and plutonium from spent nuclear fuel. However, there remains a lack of quantitative understanding of the impact of chemical environment on the radiation chemistry of DEHBA, especially under conditions expected in real-world solvent extraction processes. Therefore, we have undertaken a systematic investigation into the radiolytic degradation of DEHBA in n-dodecane under fully aerated and biphasic conditions. DEHBA integrity and degradation product formation were measured for both extraction (in contact with 4.0 M HNO3(aq)) and stripping (in contact with 0.1 M HNO3(aq)) formulations. At the lower acidity the rate of DEHBA/n-dodecane degradation was slow (G = -0.26 +/- 0.02 mu M J(-1)) whereas at the higher acidity this degradation was about 35% faster (G= -0.35 +/- 0.02 mu M J(-1)). Both values were much less than analogous measurements under deaerated conditions. Under continuously aerated conditions, FTIR and ESI-MS measurements identified the two major degradation products, bis-2-ethylhexylamine (b2EHA) and N-(2-ethylhexyl)butyramide (MEHBA), as well as the presence of additional oxidized product species. Solvent system performance was also investigated using uranium extraction and strip distribution ratio measurements. These studies showed that there was only minimal change in uranium extraction and stripping performance with absorbed gamma dose.
Subject headings
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
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- ref (subject category)
- art (subject category)
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Horne, Gregory P ...
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Mezyk, Stephen P ...
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Mincher, Bruce J ...
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Zarzana, Christo ...
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Rae, Cathy
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Tillotson, Richa ...
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Schmitt, Nichola ...
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Ball, Richard D.
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Ceder, Joakim
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Charbonnel, Mari ...
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Guilbaud, Philip ...
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Saint-Louis, Geo ...
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Berthon, Laurenc ...
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
- Articles in the publication
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Radiation Physic ...
- By the university
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Royal Institute of Technology