1
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Dang AN, Rogalski MH, Pilgrim CD, Wilbanks JR, Peterman DR, Carrie JD, Zalupski PR, Mezyk SP, Horne GP. Radiolytic evaluation of a new technetium redox control reagent for advanced used nuclear fuel separations. Phys Chem Chem Phys 2024; 26:4039-4046. [PMID: 38224090 DOI: 10.1039/d3cp04987f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2024]
Abstract
Technetium is a problematic radioisotope for used nuclear fuel (UNF) and subsequent waste management owing to its high environmental mobility and coextraction in reprocessing technologies as the pertechnetate anion (TcO4-). Consequently, several strategies are under development to control the transport of this radioisotope. A proposed approach is to use diaminoguanidine (DAG) for TcO4- and transuranic ion redox control. Although the initial DAG molecule is ultimately consumed in the redox process, its susceptibility to radiolysis is currently unknown under envisioned UNF reprocessing conditions, which is a critical knowledge gap for evaluating its overall suitability for this role. To this end, we report the impacts of steady-state gamma irradiation on the rate of DAG radiolysis in water, aqueous 2.0 M nitric acid (HNO3), and in a biphasic solvent system composed of aqueous 2.0 M HNO3 in contact with 1.5 M N,N-di-(2-ethylhexyl)isobutyramide (DEHiBA) dissolved in n-dodecane. Additionally, we report chemical kinetics for the reaction of DAG with key transients arising from electron pulse radiolysis, specifically the hydrated electron (eaq-), hydrogen atom (H˙), and hydroxyl (˙OH) and nitrate (NO3˙) radicals. The DAG molecule exhibited significant reactivity with the ˙OH and NO3˙ radicals, indicating that oxidation would be the predominant degradation pathway in radiation environments. This is consistent with its role as a reducing agent. Steady-state gamma irradiations demonstrated that DAG is readily degraded within a few hundred kilogray, the rate of which was found to increase upon going from water to HNO3 containing solutions and solvents systems. This was attributed to a thermal reaction between DAG and the predominant HNO3 radiolysis product, nitrous acid (HNO2), k(DAG + HNO2) = 5480 ± 85 M-1 s-1. Although no evidence was found for the radiolysis of DAG altering the radiation chemistry of the contacted DEHiBA/n-dodecane phase in the investigated biphasic system, the utility of DAG as a redox control reagent will likely be limited by significant competition with its degradation by HNO2.
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Affiliation(s)
- Anh N Dang
- Department of Chemistry and Biochemistry, California State University Long Beach, 1250 Bellflower Boulevard, Long Beach California, 90840-9507, USA.
| | - Maya H Rogalski
- Department of Chemistry and Biochemistry, California State University Long Beach, 1250 Bellflower Boulevard, Long Beach California, 90840-9507, USA.
| | - Corey D Pilgrim
- Center for Radiation Chemistry Research, Idaho National Laboratory, 1955 N. Freemont Ave., P.O. Box 1625, Idaho Falls, ID, 83415, USA.
| | - Joseph R Wilbanks
- Center for Radiation Chemistry Research, Idaho National Laboratory, 1955 N. Freemont Ave., P.O. Box 1625, Idaho Falls, ID, 83415, USA.
| | - Dean R Peterman
- Center for Radiation Chemistry Research, Idaho National Laboratory, 1955 N. Freemont Ave., P.O. Box 1625, Idaho Falls, ID, 83415, USA.
| | - Jesse D Carrie
- Center for Radiation Chemistry Research, Idaho National Laboratory, 1955 N. Freemont Ave., P.O. Box 1625, Idaho Falls, ID, 83415, USA.
| | - Peter R Zalupski
- Center for Radiation Chemistry Research, Idaho National Laboratory, 1955 N. Freemont Ave., P.O. Box 1625, Idaho Falls, ID, 83415, USA.
| | - Stephen P Mezyk
- Department of Chemistry and Biochemistry, California State University Long Beach, 1250 Bellflower Boulevard, Long Beach California, 90840-9507, USA.
| | - Gregory P Horne
- Center for Radiation Chemistry Research, Idaho National Laboratory, 1955 N. Freemont Ave., P.O. Box 1625, Idaho Falls, ID, 83415, USA.
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2
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Conrad JK, Mezyk SP, Isherwood LH, Baidak A, Pilgrim CD, Whittaker D, Orr RM, Pimblott SM, Horne GP. Gamma Radiation-Induced Degradation of Acetohydroxamic Acid (AHA) in Aqueous Nitrate and Nitric Acid Solutions Evaluated by Multiscale Modelling. Chemphyschem 2023; 24:e202200749. [PMID: 36470592 DOI: 10.1002/cphc.202200749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 11/11/2022] [Indexed: 12/12/2022]
Abstract
Acetohydroxamic acid (AHA) has been proposed for inclusion in advanced, single-cycle, used nuclear fuel reprocessing solvent systems for the reduction and complexation of plutonium and neptunium ions. For this application, a detailed description of the fundamental degradation of AHA in dilute aqueous nitric acid is required. To this end, we present a comprehensive, multiscale computer model for the coupled radiolytic and hydrolytic degradation of AHA in aqueous sodium nitrate and nitric acid solutions. Rate coefficients for the reactions of AHA and hydroxylamine (HA) with the oxidizing nitrate radical were measured for the first time using electron pulse radiolysis and used as inputs for the kinetic model. The computer model results are validated by comparison to experimental data from steady-state gamma ray irradiations, for which the agreement is excellent. The presented model accurately predicts the yields of the major degradation products of AHA: acetic acid, HA, nitrous oxide, and molecular hydrogen.
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Affiliation(s)
- Jacy K Conrad
- Center for Radiation Chemistry Research, Idaho National Laboratory, 1955 N. Fremont Ave., 83415, Idaho Falls, ID, USA
| | - Stephen P Mezyk
- Department of Chemistry and Biochemistry, California State University Long Beach, 1250 Bellflower Blvd, 90840, Long Beach, CA, USA
| | - Liam H Isherwood
- Dalton Cumbrian Facility, The University of Manchester, West Lakes Science Park, CA24 3HA, Moor Row, U. K.,Department of Chemistry, The University of Manchester, Oxford Rd, M13 9PL, Manchester, U.K
| | - Aliaksandr Baidak
- Dalton Cumbrian Facility, The University of Manchester, West Lakes Science Park, CA24 3HA, Moor Row, U. K.,Department of Chemistry, The University of Manchester, Oxford Rd, M13 9PL, Manchester, U.K
| | - Corey D Pilgrim
- Center for Radiation Chemistry Research, Idaho National Laboratory, 1955 N. Fremont Ave., 83415, Idaho Falls, ID, USA
| | - Daniel Whittaker
- National Nuclear Laboratory, Central Laboratory, Sellafield, Seascale, CA20 1PG, Cumbria, U.K
| | - Robin M Orr
- National Nuclear Laboratory, Central Laboratory, Sellafield, Seascale, CA20 1PG, Cumbria, U.K
| | - Simon M Pimblott
- Center for Radiation Chemistry Research, Idaho National Laboratory, 1955 N. Fremont Ave., 83415, Idaho Falls, ID, USA
| | - Gregory P Horne
- Center for Radiation Chemistry Research, Idaho National Laboratory, 1955 N. Fremont Ave., 83415, Idaho Falls, ID, USA
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3
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Umpleby RE, Conrad JK, Wilbanks JR, Schaller KD, Horne GP. Radiolytic evaluation of acetohydroxamic acid (AHA) under biphasic (n-dodecane and TBP/DEHBA/DEHiBA) used nuclear fuel reprocessing conditions. Radiat Phys Chem Oxf Engl 1993 2023. [DOI: 10.1016/j.radphyschem.2023.110799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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4
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Lyseid Authen T, Adnet JM, Bourg S, Carrott M, Ekberg C, Galán H, Geist A, Guilbaud P, Miguirditchian M, Modolo G, Rhodes C, Wilden A, Taylor R. An overview of solvent extraction processes developed in Europe for advanced nuclear fuel recycling, Part 2 — homogeneous recycling. SEP SCI TECHNOL 2021. [DOI: 10.1080/01496395.2021.2001531] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Thea Lyseid Authen
- Nuclear Chemistry, Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Gothenburg, Sweden
| | - Jean-Marc Adnet
- French Alternative Energies and Atomic Energy Commission, CEA/DES/ISEC, Univ, Montpellier, France
| | - Stéphane Bourg
- French Alternative Energies and Atomic Energy Commission, CEA/DES/ISEC, Univ, Montpellier, France
| | - Michael Carrott
- Fuels, Reactors and Reprocessing (FRR) National Nuclear Laboratory, Central Laboratory, Seascale, UK
| | - Christian Ekberg
- Nuclear Chemistry, Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Gothenburg, Sweden
| | - Hitos Galán
- High Level Waste Unit (URRAA) Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain
| | - Andreas Geist
- Karlsruhe Institute of Technology (KIT), Institute for Nuclear Waste Disposal (INE), Karlsruhe, Germany
| | - Philippe Guilbaud
- French Alternative Energies and Atomic Energy Commission, CEA/DES/ISEC, Univ, Montpellier, France
| | - Manuel Miguirditchian
- French Alternative Energies and Atomic Energy Commission, CEA/DES/ISEC, Univ, Montpellier, France
| | - Giuseppe Modolo
- Forschungszentrum Jülich GmbH (FZJ), Institut für Energie- und Klimaforschung, Nukleare Entsorgung und Reaktorsicherheit (IEK-6), Jülich, Germany
| | - Chris Rhodes
- Fuels, Reactors and Reprocessing (FRR) National Nuclear Laboratory, Central Laboratory, Seascale, UK
| | - Andreas Wilden
- Forschungszentrum Jülich GmbH (FZJ), Institut für Energie- und Klimaforschung, Nukleare Entsorgung und Reaktorsicherheit (IEK-6), Jülich, Germany
| | - Robin Taylor
- Fuels, Reactors and Reprocessing (FRR) National Nuclear Laboratory, Central Laboratory, Seascale, UK
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5
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Dong X, Wang Z, Yan Q, Chen J, Feng X, Xu C. Light‐Driven
Oxidation of Pu(
IV
) to Pu(
VI
) Enables Green and Efficient Pu Recovery. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202100431] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xue Dong
- Institute of Nuclear and New Energy Technology, Tsinghua University Beijing 100084 China
| | - Zhipeng Wang
- Institute of Nuclear and New Energy Technology, Tsinghua University Beijing 100084 China
| | - Qiang Yan
- Institute of Nuclear and New Energy Technology, Tsinghua University Beijing 100084 China
| | - Jing Chen
- Institute of Nuclear and New Energy Technology, Tsinghua University Beijing 100084 China
| | - Xiaogui Feng
- Institute of Nuclear and New Energy Technology, Tsinghua University Beijing 100084 China
| | - Chao Xu
- Institute of Nuclear and New Energy Technology, Tsinghua University Beijing 100084 China
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6
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Sánchez-García I, Bonales L, Galán H, Perlado J, Cobos J. Radiolytic degradation of sulphonated BTP and acetohydroxamic acid under EURO-GANEX process conditions. Radiat Phys Chem Oxf Engl 1993 2021. [DOI: 10.1016/j.radphyschem.2021.109402] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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7
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Chen B, Liu B, He Y, Luo D, Mu W, Yang Y, Yang Y, Peng S, Li X. Complexation of Cyclic Glutarimidedioxime with Cerium: Surrogating for Redox Behavior of Plutonium. Inorg Chem 2021; 60:3139-3148. [PMID: 33576608 DOI: 10.1021/acs.inorgchem.0c03480] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The complexation of cerium with glutarimidedioxime (H2L) was studied by potentiometry, ESI-mass spectrometry, and cyclic voltammetry. Crystallization of [CeIV(HL)3]+ from Ce3+ starting reactant indicated spontaneous complexation-driven oxidation. In aqueous solution, Ce3+ ions form three successive complexes, Ce(HL)2+, Ce(HL)2+, and Ce(HL)3 (where HL- stands for the singly deprotonated ligand). The interactions of glutarimidedioxime with metal ions are dominantly electrostatic in nature, and the stability constants of the complexes are correlated to the charge density of metal ions. Extrapolations of predicted stability constant (log β) values were made from plotting effective charge and the ionic radius of the metal ion for Pu3+ and Pu4+. The stability constants of PuIV(HL)3+ and PuIII(HL)2+ are estimated to be 27.74 and 19.75, respectively. The differences of stability constants mean that glutarimidedioxime selectively binds Pu4+ over Pu3+ by a factor of about 8 orders of magnitude, suggesting Pu4+ would be stabilized by chelation with glutarimidedioxime. The mechanism of reduction of Pu4+ to Pu3+ in acidic solution is explained by decomposition of glutarimidedioxime through acid hydrolysis rather than a chelation-driven mechanism.
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Affiliation(s)
- Baihua Chen
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, Sichuan 621999, China
| | - Bijun Liu
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, Sichuan 621999, China
| | - Yao He
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, Sichuan 621999, China
| | - Daibing Luo
- Analytical & Testing Center, Sichuan University, Chengdu, Sichuan 610064, China
| | - Wanjun Mu
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, Sichuan 621999, China
| | - Yuchuan Yang
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, Sichuan 621999, China
| | - Yanqiu Yang
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, Sichuan 621999, China
| | - Shuming Peng
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, Sichuan 621999, China
| | - Xingliang Li
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, Sichuan 621999, China
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8
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Kothandan S, Sheela A. Design of oxoperoxovanadium(V) complexes and their DNA interaction studies. J COORD CHEM 2020. [DOI: 10.1080/00958972.2020.1774752] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Saraswathi Kothandan
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore, Tamil Nadu, India
| | - A. Sheela
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore, Tamil Nadu, India
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9
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Sánchez-García I, Bonales LJ, Galán H, Perlado JM, Cobos J. Advanced direct method to quantify the kinetics of acetohydroxamic acid (AHA) by Raman spectroscopy. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 229:117877. [PMID: 31846854 DOI: 10.1016/j.saa.2019.117877] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 11/28/2019] [Accepted: 11/28/2019] [Indexed: 06/10/2023]
Abstract
The ligand acetohydroxamic acid (AHA) suffers hydrolysis at acidic conditions. This reaction has been studied for a long time, due to its implications in different applications, by using indirect colorimetric methods. This work shows how Raman spectroscopy can be very useful as a direct technique for measuring the hydrolysis kinetics of AHA, faster, more versatile and easier compared with the indirect traditional UV-Vis method which needs a complex formation with Fe. Thereby, we present a detailed study of the qualitative and quantitative Raman spectra of 1 mol/L AHA and its hydrolysis products. These results enabled us to perform a complete kinetic study of this molecule at different pH ranging from 0.5 mol/L to 4 mol/L HNO3, i.e. not only at excess acidic conditions but also at limiting nitric acid conditions.
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Affiliation(s)
- Iván Sánchez-García
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Avda. Complutense 40, 28040 Madrid, Spain; Instituto Fusión Nuclear, Universidad Politécnica de Madrid (UPM), 28006 Madrid, Spain
| | - Laura J Bonales
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Avda. Complutense 40, 28040 Madrid, Spain.
| | - Hitos Galán
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Avda. Complutense 40, 28040 Madrid, Spain
| | - Jose Manuel Perlado
- Instituto Fusión Nuclear, Universidad Politécnica de Madrid (UPM), 28006 Madrid, Spain
| | - Joaquín Cobos
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Avda. Complutense 40, 28040 Madrid, Spain
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10
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Trends and Exceptions in the Interaction of Hydroxamic Acid Derivatives of Common Di- and Tripeptides with Some 3d and 4d Metal Ions in Aqueous Solution. Molecules 2019; 24:molecules24213941. [PMID: 31683673 PMCID: PMC6864811 DOI: 10.3390/molecules24213941] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 10/25/2019] [Accepted: 10/30/2019] [Indexed: 12/12/2022] Open
Abstract
By using various techniques (pH-potentiometry, UV-Visible spectrophotometry, 1H and 17O-NMR, EPR, ESI-MS), first time in the literature, solution equilibrium study has been performed on complexes of dipeptide and tripeptide hydroxamic acids—AlaAlaNHOH, AlaAlaN(Me)OH, AlaGlyGlyNHOH, and AlaGlyGlyN(Me)OH—with 4d metals: the essential Mo(VI) and two half-sandwich type cations, [(η6-p-cym)Ru(H2O)3]2+ as well as [(η5-Cp*)Rh(H2O)3]2+, the latter two having potential importance in cancer therapy. The tripeptide derivatives have also been studied with some biologically important 3d metals, such as Fe(III), Ni(II), Cu(II), and Zn(II), in order to compare these new results with the corresponding previously obtained ones on dipeptide hydroxamic acids. Based on the outcomes, the effects of the type of metal ions, the coordination number, the number and types of donor atoms, and their relative positions to each other on the complexation have been evaluated in the present work. We hope that these collected results might be used when a new peptide-based hydroxamic acid molecule is planned with some purpose, e.g., to develop a potential metalloenzyme inhibitor.
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11
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Sánchez-García I, Bonales LJ, Galán H, Perlado JM, Cobos J. Spectroscopic study of acetohydroxamic acid (AHA) hydrolysis in the presence of europium. Implications in the extraction system studies for lanthanide and actinide separation. NEW J CHEM 2019. [DOI: 10.1039/c9nj03360b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Different implications of AHA hydrolysis affecting the extraction systems for actinide and lanthanide separation.
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Affiliation(s)
- Iván Sánchez-García
- Centro de Investigaciones Energéticas
- Medioambientales y Tecnológicas (CIEMAT)
- Madrid 28040
- Spain
- Instituto Fusión Nuclear
| | - Laura J. Bonales
- Centro de Investigaciones Energéticas
- Medioambientales y Tecnológicas (CIEMAT)
- Madrid 28040
- Spain
| | - Hitos Galán
- Centro de Investigaciones Energéticas
- Medioambientales y Tecnológicas (CIEMAT)
- Madrid 28040
- Spain
| | - Jose Manuel Perlado
- Instituto Fusión Nuclear
- Universidad Politécnica de Madrid (UPM)
- Madrid 28006
- Spain
| | - Joaquín Cobos
- Centro de Investigaciones Energéticas
- Medioambientales y Tecnológicas (CIEMAT)
- Madrid 28040
- Spain
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12
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Edwards S, Andrieux F, Boxall C, Sarsfield MJ, Taylor RJ, Woodhead D. Neptunium(iv)-hydroxamate complexes: their speciation, and kinetics and mechanism of hydrolysis. Dalton Trans 2019; 48:673-687. [DOI: 10.1039/c8dt02194e] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
First time determination of rate parameters for hydrolysis of mono- and bis-acetohydroxamatoneptunium(iv) complexes under conditions relevant to nuclear reprocessing.
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Affiliation(s)
- S. Edwards
- Engineering Department
- Lancaster University
- Lancaster
- UK
| | - F. Andrieux
- Engineering Department
- Lancaster University
- Lancaster
- UK
| | - C. Boxall
- Engineering Department
- Lancaster University
- Lancaster
- UK
| | | | - R. J. Taylor
- National Nuclear Laboratory
- Central Laboratory
- Sellafield
- UK
| | - D. Woodhead
- National Nuclear Laboratory
- Central Laboratory
- Sellafield
- UK
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13
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Morrison KD, Jiao Y, Kersting AB, Zavarin M. Reduction of Plutonium(VI) to (V) by Hydroxamate Compounds at Environmentally Relevant pH. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:6448-6456. [PMID: 29767970 DOI: 10.1021/acs.est.8b00164] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Natural organic matter is known to influence the mobility of plutonium (Pu) in the environment via complexation and reduction mechanisms. Hydroxamate siderophores have been specifically implicated due to their strong association with Pu. Hydroxamate siderophores can also break down into di and monohydroxamates and may influence the Pu oxidation state, and thereby its mobility. In this study we explored the reactions of Pu(VI) and Pu(V) with a monohydroxamate compound (acetohydroxamic acid, AHA) and a trihydroxamate siderophore desferrioxamine B (DFOB) at an environmentally relevant pH (5.5-8.2). Pu(VI) was instantaneously reduced to Pu(V) upon reaction with AHA. The presence of hydroxylamine was not observed at these pHs; however, AHA was consumed during the reaction. This suggests that the reduction of Pu(VI) to Pu(V) by AHA is facilitated by a direct one electron transfer. Importantly, further reduction to Pu(IV) or Pu(III) was not observed, even with excess AHA. We believe that further reduction of Pu(V) did not occur because Pu(V) does not form a strong complex with hydroxamate compounds at a circum-neutral pH. Experiments performed using desferrioxamine B (DFOB) yielded similar results. Broadly, this suggests that Pu(V) reduction to Pu(IV) in the presence of natural organic matter is not facilitated by hydroxamate functional groups and that other natural organic matter moieties likely play a more prominent role.
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Affiliation(s)
- Keith D Morrison
- Biosciences and Biotechnology Division, Physical and Life Sciences Directorate, L-452 , Lawrence Livermore National Laboratory , Livermore , CA 94550 , United States
- Glenn T. Seaborg Institute, Physical and Life Sciences Directorate, L-231 , Lawrence Livermore National Laboratory , Livermore , CA 94550 , United States
| | - Yongqin Jiao
- Biosciences and Biotechnology Division, Physical and Life Sciences Directorate, L-452 , Lawrence Livermore National Laboratory , Livermore , CA 94550 , United States
| | - Annie B Kersting
- Director's Office, L-019 , Lawrence Livermore National Laboratory , Livermore , CA 94550 , United States
| | - Mavrik Zavarin
- Glenn T. Seaborg Institute, Physical and Life Sciences Directorate, L-231 , Lawrence Livermore National Laboratory , Livermore , CA 94550 , United States
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14
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Zhang Z, Parker BF, Lohrey TD, Teat SJ, Arnold J, Rao L. Complexation-assisted reduction: complexes of glutaroimide-dioxime with tetravalent actinides (Np(iv) and Th(iv)). Dalton Trans 2018; 47:8134-8141. [DOI: 10.1039/c8dt01191e] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Glutaroimide-dioxime forms strong complexes with Np(iv) and Th(iv) in aqueous solution and in crystals. The formation of Np(iv) complexes from initial Np(v) is interpreted by a complexation-assisted reduction mechanism.
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Affiliation(s)
- Zhicheng Zhang
- Chemical Sciences Division
- Lawrence Berkeley National Laboratory
- Berkeley
- USA
| | - Bernard F. Parker
- Chemical Sciences Division
- Lawrence Berkeley National Laboratory
- Berkeley
- USA
- Department of Chemistry
| | - Trevor D. Lohrey
- Chemical Sciences Division
- Lawrence Berkeley National Laboratory
- Berkeley
- USA
- Department of Chemistry
| | - Simon J. Teat
- Advanced Light Source
- Lawrence Berkeley National Laboratory
- Berkeley
- USA
| | - John Arnold
- Chemical Sciences Division
- Lawrence Berkeley National Laboratory
- Berkeley
- USA
- Department of Chemistry
| | - Linfeng Rao
- Chemical Sciences Division
- Lawrence Berkeley National Laboratory
- Berkeley
- USA
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15
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Carrott M, Maher C, Mason C, Sarsfield M, Taylor R. “TRU-SANEX”: A variation on the EURO-GANEX and i-SANEX processes for heterogeneous recycling of actinides Np-Cm. SEP SCI TECHNOL 2016. [DOI: 10.1080/01496395.2016.1202979] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Michael Carrott
- National Nuclear Laboratory, Central Laboratory, Seascale, Cumbria, United Kingdom
| | - Chris Maher
- National Nuclear Laboratory, Central Laboratory, Seascale, Cumbria, United Kingdom
| | - Chris Mason
- National Nuclear Laboratory, Central Laboratory, Seascale, Cumbria, United Kingdom
| | - Mark Sarsfield
- National Nuclear Laboratory, Central Laboratory, Seascale, Cumbria, United Kingdom
| | - Robin Taylor
- National Nuclear Laboratory, Central Laboratory, Seascale, Cumbria, United Kingdom
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16
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Wilbraham RJ, Boxall C. The effect of acetohydroxamic acid on stainless steel corrosion in nitric acid. Electrochem commun 2016. [DOI: 10.1016/j.elecom.2015.11.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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17
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Marchenko VI, Alekseenko VN, Dvoeglazov KN. Organic reductants of Pu and Np ions in wet technology for spent nuclear fuel reprocessing. RADIOCHEMISTRY 2015. [DOI: 10.1134/s1066362215040050] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Carrott M, Bell K, Brown J, Geist A, Gregson C, Hères X, Maher C, Malmbeck R, Mason C, Modolo G, Müllich U, Sarsfield M, Wilden A, Taylor R. Development of a New Flowsheet for Co-Separating the Transuranic Actinides: The “EURO-GANEX” Process. SOLVENT EXTRACTION AND ION EXCHANGE 2014. [DOI: 10.1080/07366299.2014.896580] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Natrajan LS, Swinburne AN, Andrews MB, Randall S, Heath SL. Redox and environmentally relevant aspects of actinide(IV) coordination chemistry. Coord Chem Rev 2014. [DOI: 10.1016/j.ccr.2013.12.021] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Banik NL, Brendebach B, Marquardt CM. Investigations of actinides in the context of final disposal of high-level radioactive waste: trivalent actinides in aqueous solution. J Radioanal Nucl Chem 2014. [DOI: 10.1007/s10967-014-3010-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Carrot MJ, Gregson CR, Taylor RJ. Neptunium Extraction and Stability in the GANEX Solvent: 0.2 M TODGA/0.5 M DMDOHEMA/Kerosene. SOLVENT EXTRACTION AND ION EXCHANGE 2012. [DOI: 10.1080/07366299.2012.735559] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- M. J. Carrot
- a National Nuclear Laboratory, Central Laboratory , Seascale , Cumbria , United Kingdom
| | - C. R. Gregson
- a National Nuclear Laboratory, Central Laboratory , Seascale , Cumbria , United Kingdom
| | - R. J. Taylor
- a National Nuclear Laboratory, Central Laboratory , Seascale , Cumbria , United Kingdom
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Matteson BS, Tkac P, Paulenova A. Complexation Chemistry of Zirconium(IV), Uranium(VI), and Iron(III) with Acetohydroxamic Acid. SEP SCI TECHNOL 2010. [DOI: 10.1080/01496395.2010.493829] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Andrieux FPL, Boxall C, May I, Taylor RJ. A preliminary study of the hydrolysis of hydroxamic acid complexants in the presence of oxidising metal ions. ACTA ACUST UNITED AC 2010. [DOI: 10.1088/1757-899x/9/1/012081] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Tkac P, Precek M, Paulenova A. Redox reactions of Pu(IV) and Pu(III) in the presence of acetohydroxamic acid in HNO(3) solutions. Inorg Chem 2009; 48:11935-44. [PMID: 19904974 DOI: 10.1021/ic901081j] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The reduction of Pu(IV) in the presence of acetohydroxamic acid (HAHA) was monitored by vis-NIR spectroscopy. All experiments were performed under low HAHA/Pu(IV) ratios, where only the Pu(IV)-monoacetohydroxamate complex and Pu uncomplexed with HAHA were present in relevant concentrations. Time dependent concentrations of all absorbing species were resolved using molar extinction coefficients for Pu(IV), Pu(III), and the Pu(AHA)(3+) complex by deconvolution of spectra. From fitting of the experimental data by rate equations integrated by a numeric method three reactions were proposed to describe a mechanism responsible for the reduction and oxidation of plutonium in the presence of HAHA and HNO(3). Decomposition of Pu(AHA)(3+) follows a second order reaction mechanism with respect to its own concentration and leads to the formation of Pu(III). At low HAHA concentrations, a two-electron reduction of uncomplexed Pu(IV) with HAHA also occurs. Formed Pu(III) is unstable and slowly reoxidizes back to Pu(IV), which, at the point when all HAHA is decomposed, can be catalyzed by the presence of nitrous acid.
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Affiliation(s)
- Peter Tkac
- Radiation Center, Oregon State University, Corvallis, Oregon 97331, USA
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Marchenko VI, Dvoeglazov KN, Volk VI. Use of redox reagents for stabilization of Pu and Np valence forms in aqueous reprocessing of spent nuclear fuel: Chemical and technological aspects. RADIOCHEMISTRY 2009. [DOI: 10.1134/s1066362209040018] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Acetohydroxamatoiron(III) Complexes: Thermodynamics of Formation and Temperature Dependent Speciation. J SOLUTION CHEM 2008. [DOI: 10.1007/s10953-008-9327-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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