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幌延の原位置微生物による酸化還元影響の評価,3; PHREEQC-2による解析

Simulation of microbially mediated redox changes with Horonobe sedimentary rock and groundwater, 3; Analysis using PHREEQC code

吉川 英樹; 伊藤 剛志; 佐々木 祥人 ; 浅野 貴博*; 長岡 亨*; 中村 孝道*

Yoshikawa, Hideki; Ito, Tsuyoshi; Sasaki, Yoshito; Asano, Takahiro*; Nagaoka, Toru*; Nakamura, Takamichi*

高レベル放射性廃棄物の地層処分の性能評価に資するために、地下水化学に対する微生物活動による影響を評価すべく、幌延の原位置微生物を用いた室内試験結果についてPHREEQC-2を用いて解析した。その結果、酸素消費等の挙動が微生物影響で再現できることがわかった。

This report shows that PHREEQC-2 code are used to analyzed a laboratory experimental for water-microbe interaction using a microbe collected from groundwater of Horonobe area, in order to evaluate influence by the microbe activity on the chemical composition of the water to contribute to the performance assessment of the disposal of the high-level radioactive waste. As a results, we understood that behavior such as the oxygen consumption could be estimated with the microbe influence.

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