Decontamination of radioactive cesium and the redox state of Iron in the soil

被引：0
|
作者：
Nakashima, Satoru [1 ,2 ]
Basuki, Triyono [1 ]
Inada, Kuninobu [1 ]
机构：
[1] Hiroshima Univ, Nat Sci Ctr Basic Res & Dev, 1-4-2 Kagamiyama, Higashihiroshima 7398526, Japan
[2] Hiroshima Univ, Grad Sch Adv Sci & Engn, 1-3-1 Kagamiyama, Higashihiroshima 7398526, Japan
来源：
HYPERFINE INTERACTIONS | 2021年 / 242卷 / 01期
关键词：
Oxidation state; Bacillus sp; Desorption of radioactive cesium; Fukushima Daiichi nuclear power plant accident;
D O I：
10.1007/s10751-021-01728-4
中图分类号：
O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号：
070203 ; 070304 ; 081704 ; 1406 ;
摘要：
The decontamination of Cs-137 from soil became a big issue soon after Fukushima Daiichi Nuclear Power Plant accident. Desorption using bacteria is a challenge. In the previous study we isolated Bacillus sp. and this bacteria has an ability to desorb Cs-137 from soil. And the pH change after desorption was also observed. In order to understand the reason of pH change, the oxidation state change of iron after desorption by bacteria was investigated using Fe-57 Mossbauer spectroscopy and was compared with the Cs-137 desorption by acid. The reduction of iron in soil was suggested and the release of hydroxyl ion caused the pH change after bacteria treatment.
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页数：5
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