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Influence of Uranium Speciation on Plant Uptake

  • Nan Hu
  • Hui Zhang
  • Dexin Ding
  • Yujian Tan
  • Guangyue Li
Chapter
Part of the Radionuclides and Heavy Metals in the Environment book series (RHME)

Abstract

Firstly, in order to confirm the proportions of different species of uranium in solutions at different pH levels, carbonate and phosphate concentrations were calculated through Visual MINTEQ 3.1 software. Then, based on the calculation results, solutions with different species of uranium were prepared. Finally, the accumulation behavior of different species of uranium by Azolla-Anabaena was studied through hydroponic experiments. The results show that the growth inhibition rates on Azolla-Anabaena by these species of uranium were significantly different. UO22+, UO2(OH)3, UO2(CO3)34−, and (UO2)3(OH)5+ species inhibited its growth, but UO2PO4 promoted its growth. The bioaccumulation amounts of these species of uranium by Azolla-Anabaena were significantly different, too. In order to increase the bioaccumulation amounts of uranium by Azolla-Anabaena, the main species of uranium in solution should be regulated to UO22+ or (UO2)3(OH)5+, and the concentrations of carbonate and phosphate in the medium should be reduced.

Keywords

Phytoremediation Uranium Speciation Bioaccumulation 

Notes

Acknowledgments

This work was supported by the National Natural Science Foundation of China (U1401231, 11305087), the Program of Science and Technology Department of Hunan Province (2016SK2041, 2017RS3050, 2018JJ3445), and the Program of Scientific Research Foundation of Education Department of Hunan Province (14B150).

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Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  • Nan Hu
    • 1
  • Hui Zhang
    • 1
  • Dexin Ding
    • 1
  • Yujian Tan
    • 1
  • Guangyue Li
    • 1
  1. 1.Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and HydrometallurgyUniversity of South ChinaHengyangChina

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