Journal of Soil and Groundwater Environment (한국지하수토양환경학회지:지하수토양환경)

Korean Society of Soil and Groundwater Environment (한국지하수토양환경학회)
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Influence of Physicochemical Properties on Cesium Adsorption onto Soil

토양의 물리화학적 특성이 세슘 흡착에 미치는 영향

  • Park, Sang-Min (Department of Environmental Engineering, Chonbuk National University) ;
  • Lee, Jeshin (Department of Environmental Engineering, Chonbuk National University) ;
  • Kim, Young-Hun (Department of Environmental Engineering, Andong National University) ;
  • Lee, Jeung-Sun (Department of Environmental Engineering, Chonbuk National University) ;
  • Baek, Kitae (Department of Environmental Engineering, Chonbuk National University)
  • Received : 2017.01.23
  • Accepted : 2017.02.07
  • Published : 2017.02.28
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Abstract

Cesium (Cs) generated by nuclear accidents is one of the most hazardous radionuclides because of its gamma radiation and long half-life. Especially, when Cs is exposed on the soil environments, Cs is mainly adsorbed on the topsoil and is strongly combined with tiny soil particle including clay minerals. The adsorption of Cs onto soil can vary depending on various physicochemical properties of soil. In this study, the adsorption characteristics between soil and Cs were investigated according to various physicochemical properties of soil including organic matter contents, cation exchange capacity (CEC), soil particle size, and the types of clay minerals. Soil organic matter inhibited the adsorption of Cs onto the soil because organic matter was blocking the soil surface. In addition, it was estimated that the CEC of the soil influenced the adsorption of Cs onto the soil. Moreover, more Cs was adsorbed as the soil particles size decreased. It was estimated that Cs was mostly adsorbed onto the topsoil, this is related to the clay mineral. Therefore, soil organic matter, CEC, soil particle size, and clay minerals are considered the key factors that can influence the adsorption characteristics between soil and Cs.

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References

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