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Anna Yu Romanchuk1, Alexander S Slesarev, Stepan N Kalmykov

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Area of Science:

  • Environmental Science
  • Materials Science
  • Radiochemistry

Background:

  • Nuclear waste poses significant environmental and health risks due to toxic, long-lived radionuclides.
  • Effective removal of these radionuclides from contaminated water is crucial for environmental remediation.

Purpose of the Study:

  • To investigate the efficacy of graphene oxide (GO) for the rapid removal of toxic and radioactive radionuclides from contaminated water.
  • To study the interaction and sorption kinetics of GO with various actinides and fission products.

Main Methods:

  • Studied the interaction of graphene oxide with actinides (Am(III), Th(IV), Pu(IV), Np(V), U(VI)) and fission products (Sr(II), Eu(III), Tc(VII)).
  • Analyzed sorption kinetics and observed cation/GO coagulation forming nanoparticle aggregates.
  • Tested GO effectiveness in acidic solutions (pH < 2) and compared it with conventional sorbents.

Main Results:

  • Graphene oxide demonstrated high efficacy in removing toxic and radioactive radionuclides, including actinides and fission products.
  • Effective removal was achieved even in highly acidic solutions (pH < 2).
  • GO showed superior performance compared to bentonite clays and activated carbon in removing transuranium elements from simulated nuclear waste.

Conclusions:

  • Graphene oxide presents a simple and effective methodology for the rapid removal of toxic radionuclides from contaminated water.
  • This approach offers a promising solution for nuclear waste management and environmental remediation efforts.