Plutonium(IV) sorption during ferrihydrite nanoparticle formationCitation formats

  • External authors:
  • Kurt F Smith
  • Gareth T.w. Law
  • Ellen Winstanley
  • Joshua Simon Weatherill
  • Liam Abrahamsen-mills
  • Nicholas Bryan
  • J. Frederick Willem Mosselmans
  • Giannantonio Cibin
  • Stephen Parry
  • Richard Blackham
  • Kathleen Law

Standard

Plutonium(IV) sorption during ferrihydrite nanoparticle formation. / Smith, Kurt F; Morris, Katherine; Law, Gareth T.w. et al.

In: ACS Earth and Space Chemistry, Vol. 3, No. 11, 16.09.2019, p. 2437-2442.

Research output: Contribution to journalArticlepeer-review

Harvard

Smith, KF, Morris, K, Law, GTW, Winstanley, E, Livens, FR, Weatherill, JS, Abrahamsen-mills, L, Bryan, N, Mosselmans, JFW, Cibin, G, Parry, S, Blackham, R, Law, K & Shaw, S 2019, 'Plutonium(IV) sorption during ferrihydrite nanoparticle formation', ACS Earth and Space Chemistry, vol. 3, no. 11, pp. 2437-2442. https://doi.org/10.1021/acsearthspacechem.9b00105

APA

Smith, K. F., Morris, K., Law, G. T. W., Winstanley, E., Livens, F. R., Weatherill, J. S., Abrahamsen-mills, L., Bryan, N., Mosselmans, J. F. W., Cibin, G., Parry, S., Blackham, R., Law, K., & Shaw, S. (2019). Plutonium(IV) sorption during ferrihydrite nanoparticle formation. ACS Earth and Space Chemistry, 3(11), 2437-2442. https://doi.org/10.1021/acsearthspacechem.9b00105

Vancouver

Smith KF, Morris K, Law GTW, Winstanley E, Livens FR, Weatherill JS et al. Plutonium(IV) sorption during ferrihydrite nanoparticle formation. ACS Earth and Space Chemistry. 2019 Sep 16;3(11):2437-2442. https://doi.org/10.1021/acsearthspacechem.9b00105

Author

Smith, Kurt F ; Morris, Katherine ; Law, Gareth T.w. et al. / Plutonium(IV) sorption during ferrihydrite nanoparticle formation. In: ACS Earth and Space Chemistry. 2019 ; Vol. 3, No. 11. pp. 2437-2442.

Bibtex

@article{3856cbe30022470ab5b0a4947349340b,
title = "Plutonium(IV) sorption during ferrihydrite nanoparticle formation",
abstract = "Understanding interactions between iron (oxyhydr)oxide nanoparticles and plutonium is essential to underpin technology to treat radioactive effluents, in clean-up of land contaminated with radionuclides, and to ensure the safe disposal of radioactive wastes. These interactions include a range of adsorption, precipitation and incorporation processes. Here, we explore the mechanisms of plutonium sequestration during ferrihydrite precipitation from an acidic solution. The initial 1 M HNO3 solution with Fe(III)(aq) and 242Pu(IV)(aq) underwent controlled hydrolysis via the addition of NaOH to pH 9. The majority of Fe(III)(aq) and Pu(IV)(aq) was removed from solution between pH 2 and 3 during ferrihydrite formation. Analysis of Pu-ferrihydrite by Extended X-ray Absorption Fine Structure (EXAFS) spectroscopy showed that Pu(IV) formed an inner sphere tetradentate complex on the ferrihydrite surface, with minor amounts of PuO2 present. Best fits to the EXAFS data collected from Pu-ferrihydrite samples aged for two- and six- months showed no statistically significant change in the Pu(IV)-Fe oxyhydroxide surface complex despite the ferrihydrite undergoing extensive recrystallisation to hematite. This suggests the Pu remains strongly sorbed to the iron (oxyhydr)oxide surface and could be retained over extended time periods.",
keywords = "plutonium, ferrihydrite, hematite, nanoparticle, XAS, sorption",
author = "Smith, {Kurt F} and Katherine Morris and Law, {Gareth T.w.} and Ellen Winstanley and Livens, {Francis R.} and Weatherill, {Joshua Simon} and Liam Abrahamsen-mills and Nicholas Bryan and Mosselmans, {J. Frederick Willem} and Giannantonio Cibin and Stephen Parry and Richard Blackham and Kathleen Law and Samuel Shaw",
year = "2019",
month = sep,
day = "16",
doi = "10.1021/acsearthspacechem.9b00105",
language = "English",
volume = "3",
pages = "2437--2442",
journal = "ACS Earth and Space Chemistry",
issn = "2472-3452",
publisher = "American Chemical Society",
number = "11",

}

RIS

TY - JOUR

T1 - Plutonium(IV) sorption during ferrihydrite nanoparticle formation

AU - Smith, Kurt F

AU - Morris, Katherine

AU - Law, Gareth T.w.

AU - Winstanley, Ellen

AU - Livens, Francis R.

AU - Weatherill, Joshua Simon

AU - Abrahamsen-mills, Liam

AU - Bryan, Nicholas

AU - Mosselmans, J. Frederick Willem

AU - Cibin, Giannantonio

AU - Parry, Stephen

AU - Blackham, Richard

AU - Law, Kathleen

AU - Shaw, Samuel

PY - 2019/9/16

Y1 - 2019/9/16

N2 - Understanding interactions between iron (oxyhydr)oxide nanoparticles and plutonium is essential to underpin technology to treat radioactive effluents, in clean-up of land contaminated with radionuclides, and to ensure the safe disposal of radioactive wastes. These interactions include a range of adsorption, precipitation and incorporation processes. Here, we explore the mechanisms of plutonium sequestration during ferrihydrite precipitation from an acidic solution. The initial 1 M HNO3 solution with Fe(III)(aq) and 242Pu(IV)(aq) underwent controlled hydrolysis via the addition of NaOH to pH 9. The majority of Fe(III)(aq) and Pu(IV)(aq) was removed from solution between pH 2 and 3 during ferrihydrite formation. Analysis of Pu-ferrihydrite by Extended X-ray Absorption Fine Structure (EXAFS) spectroscopy showed that Pu(IV) formed an inner sphere tetradentate complex on the ferrihydrite surface, with minor amounts of PuO2 present. Best fits to the EXAFS data collected from Pu-ferrihydrite samples aged for two- and six- months showed no statistically significant change in the Pu(IV)-Fe oxyhydroxide surface complex despite the ferrihydrite undergoing extensive recrystallisation to hematite. This suggests the Pu remains strongly sorbed to the iron (oxyhydr)oxide surface and could be retained over extended time periods.

AB - Understanding interactions between iron (oxyhydr)oxide nanoparticles and plutonium is essential to underpin technology to treat radioactive effluents, in clean-up of land contaminated with radionuclides, and to ensure the safe disposal of radioactive wastes. These interactions include a range of adsorption, precipitation and incorporation processes. Here, we explore the mechanisms of plutonium sequestration during ferrihydrite precipitation from an acidic solution. The initial 1 M HNO3 solution with Fe(III)(aq) and 242Pu(IV)(aq) underwent controlled hydrolysis via the addition of NaOH to pH 9. The majority of Fe(III)(aq) and Pu(IV)(aq) was removed from solution between pH 2 and 3 during ferrihydrite formation. Analysis of Pu-ferrihydrite by Extended X-ray Absorption Fine Structure (EXAFS) spectroscopy showed that Pu(IV) formed an inner sphere tetradentate complex on the ferrihydrite surface, with minor amounts of PuO2 present. Best fits to the EXAFS data collected from Pu-ferrihydrite samples aged for two- and six- months showed no statistically significant change in the Pu(IV)-Fe oxyhydroxide surface complex despite the ferrihydrite undergoing extensive recrystallisation to hematite. This suggests the Pu remains strongly sorbed to the iron (oxyhydr)oxide surface and could be retained over extended time periods.

KW - plutonium

KW - ferrihydrite

KW - hematite

KW - nanoparticle

KW - XAS

KW - sorption

U2 - 10.1021/acsearthspacechem.9b00105

DO - 10.1021/acsearthspacechem.9b00105

M3 - Article

VL - 3

SP - 2437

EP - 2442

JO - ACS Earth and Space Chemistry

JF - ACS Earth and Space Chemistry

SN - 2472-3452

IS - 11

ER -