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Effects of Weathering Processes on Radioactive Cesium Sorption with Mineral Characterization in Korean Nuclear Facility Site

국내 원전 부지 내 암석의 광물학적 특성 규명 및 풍화에 따른 방사성 세슘(137Cs)의 흡착 평가

  • Received : 2013.09.23
  • Accepted : 2013.09.26
  • Published : 2013.09.30

Abstract

This study was to characterize the minerals in fractured and bedrock zone, and determine quantitatively sorption for radioactive cesium ($^{137}Cs$) at the Korean nuclear facility site. The rock samples were granite group that mainly consists of quartz and feldspar with 10~20% mica minerals. Chlorite was observed as secondary mineral for the rock samples collected from fractured zone, but not for bedrock samples. The $^{137}Cs$ sorption distribution coefficients increased to $K_d$ = 880~960 mL/g in the fractured zone because of the presence of secondary minerals formed by weathering processes, compared to the bedrock zone ($K_d$ = 820~840 mL/g). These results suggest that the released $^{137}Cs$ to groundwater environment could be significantly retarded in the fractured zone in the case of severe nuclear accident at the study site.

Keywords

radioactive cesium;adsorption;fractured zone;weathering;chlorite;mica minerals

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Cited by

  1. Application of Yeongdong Illite to Remove Radiocesium for Severe Nuclear Accidents vol.29, pp.4, 2016, https://doi.org/10.9727/jmsk.2016.29.4.229
  2. Sorption Characteristics of Cs on Weathered Biotite vol.28, pp.3, 2015, https://doi.org/10.9727/jmsk.2015.28.3.255

Acknowledgement

Grant : 신고리 3, 4 호기 실내수리분산 및 핵종 흡착 실내 실험

Supported by : (주)동아 컨설턴트