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Leaching of actinides and other radionuclides from matrices of Chernobyl “lava” as analogues of vitrified HLW.

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Title: Leaching of actinides and other radionuclides from matrices of Chernobyl “lava” as analogues of vitrified HLW.
Authors: Zubekhina, Bella Yu.1 radium@fastmail.com, Burakov, Boris E.1 burakov@peterlink.ru
Source: Journal of Chemical Thermodynamics. Nov2017, Vol. 114, p25-29. 5p.
Subjects: Nuclear accidents, Leaching, Radioisotopes, Chernobyl Nuclear Accident, Chornobyl, Ukraine, 1986, Actinide elements, Environmental disasters
Abstract: The paper commemorates the 30th anniversary of the severe nuclear accident at the Fourth Unit of the Chernobyl Nuclear Power Plant. Results of the investigation of radioactive glassy lava-like materials formed as a result of the accident are presented. Leaching of Pu, Am and Cs in distilled water and sodium carbonate solution at 25 °C from matrices of black and brown Chernobyl “lava” is comparable, however, leaching of Cs from black “lava” in seawater at 25 and 90 °C is almost 2 times higher than that for brown “lava”. Chemical alteration of black and brown “lava” in seawater is much more intensive that in distilled water and sodium carbonate solution. Comparison of leaching behavior of Chernobyl “lava” and aged samples of nuclear glass is not clear so far because of the lack of data. Further study of Chernobyl “lava” as analogues of vitrified high level waste (HLW) and possibly, Fukushima’s corium is needed. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Chemical Thermodynamics is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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  Data: <searchLink fieldCode="DE" term="%22Nuclear+accidents%22">Nuclear accidents</searchLink><br /><searchLink fieldCode="DE" term="%22Leaching%22">Leaching</searchLink><br /><searchLink fieldCode="DE" term="%22Radioisotopes%22">Radioisotopes</searchLink><br /><searchLink fieldCode="DE" term="%22Chernobyl+Nuclear+Accident%2C+Chornobyl%2C+Ukraine%2C+1986%22">Chernobyl Nuclear Accident, Chornobyl, Ukraine, 1986</searchLink><br /><searchLink fieldCode="DE" term="%22Actinide+elements%22">Actinide elements</searchLink><br /><searchLink fieldCode="DE" term="%22Environmental+disasters%22">Environmental disasters</searchLink>
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  Data: The paper commemorates the 30th anniversary of the severe nuclear accident at the Fourth Unit of the Chernobyl Nuclear Power Plant. Results of the investigation of radioactive glassy lava-like materials formed as a result of the accident are presented. Leaching of Pu, Am and Cs in distilled water and sodium carbonate solution at 25 °C from matrices of black and brown Chernobyl “lava” is comparable, however, leaching of Cs from black “lava” in seawater at 25 and 90 °C is almost 2 times higher than that for brown “lava”. Chemical alteration of black and brown “lava” in seawater is much more intensive that in distilled water and sodium carbonate solution. Comparison of leaching behavior of Chernobyl “lava” and aged samples of nuclear glass is not clear so far because of the lack of data. Further study of Chernobyl “lava” as analogues of vitrified high level waste (HLW) and possibly, Fukushima’s corium is needed. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Chemical Thermodynamics is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1016/j.jct.2016.08.029
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      – Code: eng
        Text: English
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        PageCount: 5
        StartPage: 25
    Subjects:
      – SubjectFull: Nuclear accidents
        Type: general
      – SubjectFull: Leaching
        Type: general
      – SubjectFull: Radioisotopes
        Type: general
      – SubjectFull: Chernobyl Nuclear Accident, Chornobyl, Ukraine, 1986
        Type: general
      – SubjectFull: Actinide elements
        Type: general
      – SubjectFull: Environmental disasters
        Type: general
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      – TitleFull: Leaching of actinides and other radionuclides from matrices of Chernobyl “lava” as analogues of vitrified HLW.
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              M: 11
              Text: Nov2017
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              Y: 2017
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