Original Article

Econ. Environ. Geol. 2018; 51(2): 113-120

Published online April 30, 2018

https://doi.org/10.9719/EEG.2018.51.2.113

© THE KOREAN SOCIETY OF ECONOMIC AND ENVIRONMENTAL GEOLOGY

Study on the Illite Modification for Removal of Radioactive Cesium in Water Environment near Nuclear Facilities

Jeonghwan Hwang1,2, Sungwook Choung1*, Woosik Shin1 and Weon Shik Han2

1Division of Earth and Environmental Sciences, Korea Basic Science Institute
2Department of Earth System Science, Yonsei University

Correspondence to : schoung@kbsi.re.kr

Received: March 12, 2018; Revised: April 2, 2018; Accepted: April 4, 2018

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided original work is properly cited.

Abstract

Radioactive cesium(137Cs) can be released into the environment through severe nuclear accidents such as the Chernobyl and Fukushima, The 137Cs is one of major monitoring radionuclides due to its chemical toxicity, γ radiation and long half-life(t1/2=30.2 yrs). It has been known well that illite adsorb selectively and strongly the cesium due to frayed edge sites. The quantity of the FES in the illite could be controlled by weathering processes. Therefore, this study was modified illite samples through artificial weathering in the laboratory to increase sorption efficiency for cesium. Abundant interlayer cations(i.e., K, Ca) were eluted within 1 day, while Si and Al were gradually released from the crystal structure. In addition, broad peaks of XRD indicated the occurrence of chemical weathering. The cesium sorption distribution coefficients increased up to approximately 2 times after the weathering. These results suggested that sorption capacity of illite could be enhanced for cesium through artificial weathering under low temperature.

Keywords radioactive cesium, illite, artificial weathering, sorption

원자력 시설 인근 수계에서 방사성 세슘 제거를 위한 일라이트 개질 연구

황정환1,2 · 정성욱1* · 신우식1 · 한원식2

1한국기초과학지원연구원 지구환경연구부, 2연세대학교 지구시스템과학과

요 약

Article

Original Article

Econ. Environ. Geol. 2018; 51(2): 113-120

Published online April 30, 2018 https://doi.org/10.9719/EEG.2018.51.2.113

Copyright © THE KOREAN SOCIETY OF ECONOMIC AND ENVIRONMENTAL GEOLOGY.

Study on the Illite Modification for Removal of Radioactive Cesium in Water Environment near Nuclear Facilities

Jeonghwan Hwang1,2, Sungwook Choung1*, Woosik Shin1 and Weon Shik Han2

1Division of Earth and Environmental Sciences, Korea Basic Science Institute
2Department of Earth System Science, Yonsei University

Correspondence to:schoung@kbsi.re.kr

Received: March 12, 2018; Revised: April 2, 2018; Accepted: April 4, 2018

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided original work is properly cited.

Abstract

Radioactive cesium(137Cs) can be released into the environment through severe nuclear accidents such as the Chernobyl and Fukushima, The 137Cs is one of major monitoring radionuclides due to its chemical toxicity, γ radiation and long half-life(t1/2=30.2 yrs). It has been known well that illite adsorb selectively and strongly the cesium due to frayed edge sites. The quantity of the FES in the illite could be controlled by weathering processes. Therefore, this study was modified illite samples through artificial weathering in the laboratory to increase sorption efficiency for cesium. Abundant interlayer cations(i.e., K, Ca) were eluted within 1 day, while Si and Al were gradually released from the crystal structure. In addition, broad peaks of XRD indicated the occurrence of chemical weathering. The cesium sorption distribution coefficients increased up to approximately 2 times after the weathering. These results suggested that sorption capacity of illite could be enhanced for cesium through artificial weathering under low temperature.

Keywords radioactive cesium, illite, artificial weathering, sorption

원자력 시설 인근 수계에서 방사성 세슘 제거를 위한 일라이트 개질 연구

황정환1,2 · 정성욱1* · 신우식1 · 한원식2

1한국기초과학지원연구원 지구환경연구부, 2연세대학교 지구시스템과학과

Received: March 12, 2018; Revised: April 2, 2018; Accepted: April 4, 2018

요 약

    KSEEG
    Apr 30, 2024 Vol.57 No.2, pp. 107~280

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