Jung Hoon Choi, Hee-chul Eun, Hwan-Seo Park, Do-Hee Ahn
언어
영어(ENG)
URL
https://www.earticle.net/Article/A270607
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원문정보
초록
영어
Waste treatment technology for the separation and solidification of radioactive nuclides generated from the pyrochemical process has been intensively studied to achieve the reduction of radioactive waste volume. The present study reports the separation efficiency of group II fission products in LiCl waste salt generated from a electrolytic reduction process through a layer- melt crystallization method using Sr and Ba nuclides as a surrogate material of group II fission products. The concentrated group II nuclides are converted into stable oxide form in consideration of solidification by a conversion/distillation process, where selective oxidation of group II nuclides proceeds by Li2O oxidant and residual salts are removed by a vacuum distillation process. Finally, to immobilize separated group II nuclides, a preliminary solidification study was conducted using SiO2-B2O3-Al2O3 matrix, and high density glass-based waste form was fabricated under 50wt% waste loading of strontium oxide surrogate material. Through the verification of the crystallization, conversion/distillation, and solidification processes, the treatment flow for the separation and solidification of group II fission products in LiCl waste salt has been established.
목차
Abstract 1. Introduction 2. Concept of LiCI Waste Salt Treatment 3. Separation of Group II Nuclides from LiCI Waste Salt 3.1 Concentration of Group II Nuclides by Layer Melt Crystallization 3.2 Conversion of Group II Nuclides and LiCI Salt Distillation 4. Solidification of Separated Group II Nuclides 5. Conclusion REFERENCES
키워드
Pyrochemical ProcessLiCl Waste SaltNuclide SeparationSolidificationWaste Form
저자
Jung Hoon Choi [ 최정훈 | Korea Atomic Energy Research Institute ]
Hee-chul Eun [ 은희철 | Korea Atomic Energy Research Institute ]
Corresponding author
Hwan-Seo Park [ 박환서 | Korea Atomic Energy Research Institute ]
Do-Hee Ahn [ 안도희 | Korea Atomic Energy Research Institute ]
한국방사성폐기물학회는 국내 방사성폐기물 관리 분야 산ㆍ학ㆍ연 관계자들의 학술단체로 학술연구발표회 및 강연회 개최, 학술간행물 발간 등의 학술 진흥사업, 방사성폐기물에 관한 국제교류 및 협력 증진사업, 방사성폐기물에 관한 위탁연구 자문 및 평가사업 수행 등으로 국내 방사성폐기물 관리 분야 전반의 내부 역량 강화와 경쟁력 확보를 도모하고자 한다. 더 나아가 국가사회 발전에 미치는 중요성을 인식하는 계기를 만들고자 한다. 또한 이러한 활동을 통하여 국가경제 발전과 국민건강에 일조할 수 있도록 하며, 궁극적으로는 한국방사성폐기물학회가 세계 속의 학술단체로의 발전해 나가는 것을 목표로 한다.
간행물
간행물명
방사성폐기물학회지 [Journal of Nuclear Fuel Cycle and Waste Technology (JNFCWT)]