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Journal of Radioanalytical and Nuclear Chemistry

, Volume 319, Issue 1, pp 393–399 | Cite as

Effect of fluorine on stabilization/solidification of radioactive fluoride liquid waste in magnesium potassium phosphate cement

  • Zheng-hua Qian
  • Xue-yang Liu
  • Yan-bo QiaoEmail author
  • Shuai Wang
  • Qiang Qin
  • Liu-qing Shi
  • Hong-hua Peng
Article
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Abstract

This paper investigated the effect of fluorine mass fraction on magnesium potassium phosphate cement (MKPC) stabilization/solidification (S/S). The solidified object was a simulated fluid containing Co2+, Sr2+, Cs+ and F−. The results showed when the fluorine mass fraction increased, the setting time of the MKPC slurry extended. Under the same conditions, the 28-day compressive strength of the MKPC solidified forms reduced, and the freeze–thaw resistance enhanced. When the fluorine mass fraction was more than 6 wt%, a new product (MgF2) appeared and caused the structure to become evacuated. Meanwhile, leaching concentration of the researched ions increased, especially Cs2+ and F−. When the fluorine mass fraction of the MKPC solidified forms was 12 wt%, a very small amount of wagnerite was observed.

Keywords

Magnesium potassium phosphate cement Stabilization/solidification Simulated fluid Fluorine mass fraction 
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Notes

Funding

Funding was provided by Natural Science Foundation of Jilin Province (CN) (Grant No. 21507143).

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2018

Authors and Affiliations

  • Zheng-hua Qian
    • 1
  • Xue-yang Liu
    • 1
  • Yan-bo Qiao
    • 1
    Email author
  • Shuai Wang
    • 1
  • Qiang Qin
    • 1
  • Liu-qing Shi
    • 1
  • Hong-hua Peng
    • 1
  1. 1.Shanghai Institute of Applied PhysicsChinese Academy of SciencesShanghaiChina

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