A Study on the Adsorption Characteristics of Illite for Adsorption Cs-137 and Sr-90 from Contaminated Water Discharged from Spent Nuclear Fuel

Tae Young Kim; Hye Min Park; Seo Young Kwon; Yang Soo Song; Ye Rin Jo; Cheol Min Ham

doi:10.7844/kirr.2026.35.2.66

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2026 Vol.35, Issue 2 Preview Page Next Page

Research Paper

A Study on the Adsorption Characteristics of Illite for Adsorption Cs-137 and Sr-90 from Contaminated Water Discharged from Spent Nuclear Fuel 사용후핵연료에서 배출되는 오염수 처리를 위한 일라이트의 Cs-137 및 Sr-90 흡착 특성에 관한 연구

30 April 2026. pp. 66-72

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Abstract

This study evaluated the adsorption performance of illite for removing Cs-137 and Sr-90 from contaminated water discharged from spent nuclear fuel. Illite mined in Yeongdong, Gangwon-do, was used, and radioactive solutions were prepared by diluting Cs-137 and Sr-90 standard radioactive solutions with tertiary distilled water. Illite was added to 500 mL of each solution and mixed via upward stirring during the adsorption reaction. After the reaction, the solid–liquid phase was centrifuged. The Cs-137 concentration was measured using a gamma nuclide analyzer, while the Sr-90 concentration was measured using a liquid scintillation counter. In the experiment, 10 g of 25-50 μm illite was added to 500 mL of 10 Bq/mL Cs-137. After reacting for 10 min, approximately 93.70% and 17.20% Cs-137 and Sr-90 were adsorbed, respectively.

Keywords

Illite

Cesium

Strontium

Adsorption

Decontamination

본 연구는 사용후핵연료에서 배출되는 오염수에 포함된 Cs-137 및 Sr-90의 제염을 위한 일라이트의 흡착 특성을 평가하고자 수행되었다. 강원도 영동지역에서 채광된 일라이트를 사용하였으며, Cs-137 및 Sr-90의 표준 방사성 용액과 3차 증류수를 희석하여 특정 농도로 제조하여 실험에 사용하였다. 제조된 방사성 용액에 일라이트를 투입한 후 상향식으로 교반하여 흡착 반응을 유도하였고, 흡착 반응이 완료된 후 원심분리기를 이용하여 고액분리를 하였다. 분리된 액상의 Cs-137 농도는 감마 핵종 분석기, Sr-90 농도는 액체섬광계수기를 이용하여 측정 후 흡착률을 계산하였다. 실험 결과, 10 Bq/mL Cs-137 용액 500 mL에 25-50 μm 일라이트 10 g을 투입하여 10 분 간 반응시킨 결과, Cs-137은 약 93.7 % 흡착되었으며, Sr-90은 약 17.2 % 흡착이 가능한 것을 확인하였다.

키워드

일라이트

세슘

스트론튬

흡착

제염

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Information

Publisher :The Korean Institute of Resources Recycling
Publisher(Ko) :한국자원리싸이클링학회
Journal Title :Resources Recycling
Journal Title(Ko) :자원리싸이클링
Volume : 35
No :2
Pages :66-72
Received Date : 2026-01-26
Revised Date : 2026-02-27
Accepted Date : 2026-03-24
DOI :https://doi.org/10.7844/kirr.2026.35.2.66

Resources Recycling ISSN:2765-3439(Print) 2765-3447(Online) 자원리싸이클링

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