地層処分環境下における微生物による硝酸塩還元反応モデルの構築

Development of bio-denitrification model of nitrates under disposal condition

増田 薫*; 村上 裕*; 加藤 修*; 加藤 晃*; 栗本 宜孝; 本田 明

Masuda, Kaoru*; Murakami, Hiroshi*; Kato, Osamu*; Kato, Ko*; Kurimoto, Yoshitaka; Honda, Akira

硝酸塩を含む放射性廃棄物の地層処分後の影響評価システム開発の一環として、微生物による硝酸塩還元反応モデル構築を行った。既往の文献及び基礎試験結果をもとに有機物の消費と関連付けた微生物反応モデルを構築した。別途行った実地下水を用いた試験結果は上記反応モデルにより説明できた。

A model of nitrate reduction reaction due to microbial activity was developed as a part of an estimation system for the impacts of nitrate on the safety of a geological disposal system for radioactive wastes. Microbial reaction model, which incorporates a relation between nitrate reduction and consumption of organic materials, has been developed on the basis of data available in the literature and experimental results. The model can interpret the experimental results which were acquired using real groundwater.