Migration of Radionuclides (60Co, 85Sr and 137Cs) through Saturated Sandy Soil Layer

Toshihiko OHNUKI; Yoshiro OHTSUKA; Hiromichi OGAWA; Tadatoshi YAMAMOTO; MASAKAZU WASHIO; Yoshiki WADACHI

doi:10.5453/jhps.19.13

Migration of Radionuclides (⁶⁰Co, ⁸⁵Sr and ¹³⁷Cs) through Saturated Sandy Soil Layer

Toshihiko OHNUKI, Yoshiro OHTSUKA, Hiromichi OGAWA, Tadatoshi YAMAMOTO, MASAKAZU WASHIO, Yoshiki WADACHI

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Keywords: migration of radionuclide, saturated zone, ⁶⁰Co, ⁸⁵Sr, ¹³⁷Cs, LLW, shallow land disposal, mobility of radionuclide, hydroxide transport, particulate transport

JOURNAL FREE ACCESS

1984 Volume 19 Issue 1 Pages 13-18

DOI https://doi.org/10.5453/jhps.19.13

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Abstract

The migration of ⁶⁰Co, ⁸⁵Sr and ¹³⁷Cs in saturated sandy soil layer has been investigated by using saturated zone model apparatus (saturated zone: 40cmW×70cmL×25cmH). Tendencies of mobility among these radionuclides are
⁸⁵Sr>⁶⁰Co>¹³⁷Cs
at the plume of high concentration and
⁶⁰Co>¹³⁷Cs>⁸⁵Sr
at the plume of low concentration. Mobilities of ⁶⁰Co and ¹³⁷Cs at the plume of low concentration seem to be due to form of insoluble hydroxide ⁶⁰Co(OH)₂ and adsorption of ¹³⁷Cs on silt. Therefore, it is important to consider both insoluble hydroxide and particulate transports for safety assessment of LLW shallow land disposal.

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