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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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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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Conrad JK, Pilgrim CD, Pimblott SM, Mezyk SP, Horne GP. Multiscale modelling of the radical-induced chemistry of acetohydroxamic acid in aqueous solution. RSC Adv 2022; 12:29757-29766. [PMID: 36321097 PMCID: PMC9577708 DOI: 10.1039/d2ra03392e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Accepted: 10/10/2022] [Indexed: 11/06/2022] Open
Abstract
Acetohydroxamic acid (AHA) is a small organic acid with a wide variety of industrial, biological, and pharmacological applications. A deep fundamental molecular level understanding of the mechanisms responsible for the radical-induced reactions of AHA in these environments is necessary to predict and control their behaviour and elucidate their interplay with other attendant chemical species, for example, the oxidative degradation products of AHA. To this end, we present a comprehensive, multiscale computer model for interrogating the radical-induced degradation of AHA in acidic aqueous solutions. Model predictions were critically evaluated by a systematic experimental radiation chemistry investigation, leveraging time-resolved electron pulse irradiation techniques for the measurement of new radical reaction rate coefficients, and steady-state gamma irradiations for the identification and quantification of AHA degradation products: acetic acid, hydroxylamine, nitrous oxide, and molecular hydrogen, with formic acid and methane as minor products. Excellent agreement was achieved between calculation and experiment, indicating that this fundamental model can accurately predict the degradation pathways of AHA under irradiation in acidic aqueous solutions. A comprehensive multiscale model determines the fundamental reaction mechanisms of the radical-induced degradation of acetohydroxamic acid in acidic aqueous solutions.![]()
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Affiliation(s)
- Jacy K. Conrad
- Center for Radiation Chemistry Research, Idaho National Laboratory1955 N. Fremont Ave.Idaho FallsID83415USA
| | - Corey D. Pilgrim
- Center for Radiation Chemistry Research, Idaho National Laboratory1955 N. Fremont Ave.Idaho FallsID83415USA
| | - Simon M. Pimblott
- Center for Radiation Chemistry Research, Idaho National Laboratory1955 N. Fremont Ave.Idaho FallsID83415USA
| | - Stephen P. Mezyk
- Department of Chemistry and Biochemistry, California State University Long Beach1250 Bellflower Blvd.Long BeachCA90840USA
| | - Gregory P. Horne
- Center for Radiation Chemistry Research, Idaho National Laboratory1955 N. Fremont Ave.Idaho FallsID83415USA
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Development of a gamma irradiation loop to evaluate the performance of a EURO-GANEX process. NUCLEAR ENGINEERING AND TECHNOLOGY 2022. [DOI: 10.1016/j.net.2021.11.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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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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Mossini E, Macerata E, Boubals N, Berthon C, Charbonnel MC, Mariani M. Effects of Gamma Irradiation on the Extraction Properties of Innovative Stripping Solvents for i-SANEX/GANEX Processes. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c01236] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Eros Mossini
- Department of Energy—Nuclear Engineering Division, Politecnico di Milano, Piazza Leonardo da Vinci 32, Milano 20133, Italy
| | - Elena Macerata
- Department of Energy—Nuclear Engineering Division, Politecnico di Milano, Piazza Leonardo da Vinci 32, Milano 20133, Italy
| | - Nathalie Boubals
- CEA, DES, ISEC, DMRC, University of Montpellier, Marcoule, Bagnols-sur-Cèze F-30207, France
| | - Claude Berthon
- CEA, DES, ISEC, DMRC, University of Montpellier, Marcoule, Bagnols-sur-Cèze F-30207, France
| | | | - Mario Mariani
- Department of Energy—Nuclear Engineering Division, Politecnico di Milano, Piazza Leonardo da Vinci 32, Milano 20133, Italy
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Comparative evaluation of radiolytic stability of aqueous soluble BTP and BTBP derivatives under static gamma irradiation. J Radioanal Nucl Chem 2021. [DOI: 10.1007/s10967-021-07711-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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