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A time-resolved X-ray diffraction study of Cs exchange into hexagonal H-birnessite

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Published/Copyright: March 7, 2015
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American Mineralogist
From the journal American Mineralogist Volume 98 Issue 4

Abstract

To measure the uptake of radioactive Cs in soils that are rich in Mn oxides, we applied time-resolved synchrotron X-ray diffraction (TR-XRD), inductively coupled plasma-mass spectrometry (ICP-MS), and analytical scanning electron microscopy (SEM) to determine the kinetics and mechanisms of aqueous Cs substitution in the phyllomanganate hexagonal H-birnessite at pH values ranging from 3 to 10. We observed that the rate of Cs cation exchange into hexagonal H-birnessite exhibited only a weak dependence on pH, but the total amount of Cs loading in the interlayer region increased dramatically above pH 6.5. The increase in Cs content at higher pH may be attributed to the increasingly negative charge on the Mn-O octahedral sheets and perhaps to a structural change toward triclinic symmetry with high pH. Dissolution at low pH may have inhibited Cs sequestration. Our work supports delamination-reassembly as a mechanism of cation exchange.

Keywords : Hexagonal birnessite; cesium; cation exchange; time-resolved X-ray diffraction
Received: 2012-6-10
Accepted: 2012-12-3
Published Online: 2015-3-7
Published in Print: 2013-4-1

© 2015 by Walter de Gruyter Berlin/Boston

Articles in the same Issue

  1. Highlight and Breakthrough. A fresh look at crystals in the Bishop Tuff
  2. Actinides in Geology, Energy, and the Environment. Remobilization of U and REE and the formation of secondary minerals in oxidized U deposits
  3. Actinides in Geology, Energy, and the Environment. Revision of the symmetry and the crystal structure of čejkaite, Na4(UO2)(CO3)3
  4. Characterization of ferric arsenate-sulfate compounds: Implications for arsenic control in refractory gold processing residues
  5. Crystal structure and chemistry of skarn-associated bismuthian vesuvianite
  6. Transformation of graphite to lonsdaleite and diamond in the Goalpara ureilite directly observed by TEM
  7. Quartz nanocrystals in the 2.48 Ga Dales Gorge banded iron formation of Hamersley, Western Australia: Evidence for a change from submarine to subaerial volcanism at the end of the Archean
  8. Synthesis and characterization of amphiboles along the tremolite–glaucophane join
  9. Elasticity of franklinite and trends for transition-metal oxide spinels
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  11. Hydrogen incorporation and the oxidation state of iron in ringwoodite: A spectroscopic study
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  13. Calibration of zircon as a Raman spectroscopic pressure sensor to high temperatures and application to water-silicate melt systems
  14. Computational study of the elastic behavior of the 2M1 muscovite-paragonite series
  15. Vanadium L2,3 XANES experiments and first-principles multielectron calculations: Impact of second-nearest neighboring cations on vanadium-bearing fresnoites
  16. A time-resolved X-ray diffraction study of Cs exchange into hexagonal H-birnessite
  17. Grain-boundary diffusion rates inferred from grain-size variations of quartz in metacherts from a contact aureole
  18. On the use of unpolarized infrared spectroscopy for quantitative analysis of absorbing species in birefringent crystals
  19. A computational model of cation ordering in the magnesioferrite-qandilite (MgFe2O4- Mg2TiO4) solid solution and its potential application to titanomagnetite (Fe3O4-Fe2TiO4)
  20. 3T-phlogopite from Kasenyi kamafugite (SW Uganda): EPMA, XPS, FTIR, and SCXRD study
  21. Revision of the crystal structure and chemical formula of haiweeite, Ca(UO2)2(Si5O12)(OH)2·6H2O
  22. Cation arrangement in the octahedral and tetrahedral sheets of cis-vacant polymorph of dioctahedral 2:1 phyllosilicates by quantum mechanical calculations
  23. High-pressure phase transitions of Fe3–xTixO4 solid solution up to 60 GPa correlated with electronic spin transition
  24. Hydrogen incorporation in crystalline zircon: Insight from ab initio calculations
  25. The vibrational features of hydroxylapatite and type A carbonated apatite: A first principle contribution
  26. STEM investigation of exsolution lamellae and “c” reflections in Ca-rich dolomite from the Platteville Formation, western Wisconsin
  27. Karenwebberite, Na(Fe2+,Mn2+)PO4, a new member of the triphylite group from the Malpensata pegmatite, Lecco Province, Italy
  28. The crystal structure of ramdohrite, Pb5.9Fe0.1Mn0.1In0.1Cd0.2Ag2.8Sb10.8S24: A new refinement
  29. Static disorders of atoms and experimental determination of Debye temperature in pyrope: Low- and high-temperature single-crystal X-ray diffraction study—Discussion
  30. Static disorders of atoms and experimental determination of Debye temperature in pyrope: Low- and high-temperature single-crystal X-ray diffraction study—Reply
https://doi.org/10.2138/am.2013.4287
Keywords for this article
Hexagonal birnessite; cesium; cation exchange; time-resolved X-ray diffraction

Articles in the same Issue

  1. Highlight and Breakthrough. A fresh look at crystals in the Bishop Tuff
  2. Actinides in Geology, Energy, and the Environment. Remobilization of U and REE and the formation of secondary minerals in oxidized U deposits
  3. Actinides in Geology, Energy, and the Environment. Revision of the symmetry and the crystal structure of čejkaite, Na4(UO2)(CO3)3
  4. Characterization of ferric arsenate-sulfate compounds: Implications for arsenic control in refractory gold processing residues
  5. Crystal structure and chemistry of skarn-associated bismuthian vesuvianite
  6. Transformation of graphite to lonsdaleite and diamond in the Goalpara ureilite directly observed by TEM
  7. Quartz nanocrystals in the 2.48 Ga Dales Gorge banded iron formation of Hamersley, Western Australia: Evidence for a change from submarine to subaerial volcanism at the end of the Archean
  8. Synthesis and characterization of amphiboles along the tremolite–glaucophane join
  9. Elasticity of franklinite and trends for transition-metal oxide spinels
  10. Redox systematics of martian magmas with implications for magnetite stability
  11. Hydrogen incorporation and the oxidation state of iron in ringwoodite: A spectroscopic study
  12. Hydrous ringwoodite to 5 K and 35 GPa: Multiple hydrogen bonding sites resolved with FTIR spectroscopy
  13. Calibration of zircon as a Raman spectroscopic pressure sensor to high temperatures and application to water-silicate melt systems
  14. Computational study of the elastic behavior of the 2M1 muscovite-paragonite series
  15. Vanadium L2,3 XANES experiments and first-principles multielectron calculations: Impact of second-nearest neighboring cations on vanadium-bearing fresnoites
  16. A time-resolved X-ray diffraction study of Cs exchange into hexagonal H-birnessite
  17. Grain-boundary diffusion rates inferred from grain-size variations of quartz in metacherts from a contact aureole
  18. On the use of unpolarized infrared spectroscopy for quantitative analysis of absorbing species in birefringent crystals
  19. A computational model of cation ordering in the magnesioferrite-qandilite (MgFe2O4- Mg2TiO4) solid solution and its potential application to titanomagnetite (Fe3O4-Fe2TiO4)
  20. 3T-phlogopite from Kasenyi kamafugite (SW Uganda): EPMA, XPS, FTIR, and SCXRD study
  21. Revision of the crystal structure and chemical formula of haiweeite, Ca(UO2)2(Si5O12)(OH)2·6H2O
  22. Cation arrangement in the octahedral and tetrahedral sheets of cis-vacant polymorph of dioctahedral 2:1 phyllosilicates by quantum mechanical calculations
  23. High-pressure phase transitions of Fe3–xTixO4 solid solution up to 60 GPa correlated with electronic spin transition
  24. Hydrogen incorporation in crystalline zircon: Insight from ab initio calculations
  25. The vibrational features of hydroxylapatite and type A carbonated apatite: A first principle contribution
  26. STEM investigation of exsolution lamellae and “c” reflections in Ca-rich dolomite from the Platteville Formation, western Wisconsin
  27. Karenwebberite, Na(Fe2+,Mn2+)PO4, a new member of the triphylite group from the Malpensata pegmatite, Lecco Province, Italy
  28. The crystal structure of ramdohrite, Pb5.9Fe0.1Mn0.1In0.1Cd0.2Ag2.8Sb10.8S24: A new refinement
  29. Static disorders of atoms and experimental determination of Debye temperature in pyrope: Low- and high-temperature single-crystal X-ray diffraction study—Discussion
  30. Static disorders of atoms and experimental determination of Debye temperature in pyrope: Low- and high-temperature single-crystal X-ray diffraction study—Reply
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