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Liquid Low-Level Radioactive Waste Treatment Using an Electrodialysis Process
Agnieszka Miśkiewicz1, Agnieszka Nowak1, Jędrzej Pałka1
1Institute of Nuclear Chemistry and Technology, Dorodna 16, 03-195 Warsaw, Poland.
Membranes
|April 30, 2021
Summary
Electrodialysis effectively treats liquid low-level radioactive waste (LLW), removing contaminants like cobalt-60 and cesium-137. This method ensures high desalination and decontamination rates, crucial for nuclear power plant effluent management.
Area of Science:
- Environmental Science
- Chemical Engineering
- Nuclear Engineering
Background:
- Liquid low-level radioactive waste (LLW) poses disposal challenges.
- Effective treatment methods are needed for nuclear power plant effluents and radioisotope applications.
Purpose of the Study:
- Investigate electrodialysis (ED) for liquid LLW treatment.
- Evaluate ED's performance with varying solution compositions and specific radionuclides.
- Assess ED's ability to remove non-ionic organic contaminants.
Main Methods:
- Electrodialysis experiments on model solutions.
- Tests with radionuclides (60Co, 137Cs) and real radioactive waste.
- Analysis of process parameters: applied voltage and electrical current.
Main Results:
- Electrodialysis demonstrated high desalination and decontamination rates for LLW.
- Applied voltage and electrical current were key influencing parameters.
- ED successfully separated non-ionic organic contaminants from LLW.
Conclusions:
- Electrodialysis is a suitable and effective method for treating liquid low-level radioactive waste.
- The ED process offers efficient removal of ionic and non-ionic contaminants.
- Optimizing voltage and current enhances LLW treatment efficacy.
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