Treatment of radioactive liquid waste by sorption on natural zeolite in Turkey
The research paper discusses the treatment of liquid radioactive waste generated in Turkey through the use of natural zeolites, specifically clinoptilolite, to remove key radionuclides such as 137Cs, 60Co, 90Sr, and 110mAg. The study aims to evaluate the effectiveness of zeolite in achieving a high decontamination factor (DF) through a combined process of chemical precipitation and adsorption. Laboratory tests indicated that clinoptilolite, particularly from the Gordes region, exhibited superior ion-exchange properties, making it the most effective sorbent under dynamic treatment conditions.
The research highlights the unique characteristics of natural zeolites, which are hydrated aluminosilicates with a honeycomb structure that allows for high cation-exchange capacity. The study involved sampling zeolite from various deposits in Turkey and conducting tests to determine their effectiveness in removing radionuclides from liquid low-level waste (LLW). The results showed that the use of clinoptilolite significantly improved the decontamination process, achieving a DF of 430 for 137Cs at optimal conditions (pH 10 and a particle size of 0.5 mm).
The research paper also discusses the importance of proper management of radioactive waste, emphasizing the need for effective treatment methods to ensure safe long-term storage and disposal. The findings suggest that natural zeolites can be a cost-effective alternative to more expensive chemical treatments, providing a robust solution for the immobilization of radioactive waste in cement matrices.
This research paper is significant in the field of radioactive waste management, particularly in the context of developing countries like Turkey, where the volume of liquid radioactive waste is relatively small but poses significant hazards if not managed properly. The study contributes to ongoing discussions about sustainable and cost-effective methods for treating radioactive waste, highlighting the potential of natural zeolites as a viable option.
By demonstrating the effectiveness of clinoptilolite in removing radionuclides, the research provides valuable insights for policymakers and environmental scientists focused on waste management strategies. The findings can inform future research and practical applications in the treatment of radioactive waste, ultimately contributing to safer environmental practices and public health protection.
