Microbially formed Mn(IV) oxide as a novel adsorbent for removal of Radium

Tanaka, Kazuya ; Yamaji, Keiko*; Masuya, Hayato*; Tomita, Jumpei ; Ozawa, Mayumi*; Yamasaki, Shinya*; Tokunaga, Kohei ; Fukuyama, Kenjin*; Ohara, Yoshiyuki*; Maamoun, I.*; Yamaguchi, Akiko ; Takahashi, Yoshio*; Kozai, Naofumi ; Grambow, B.*

In this study, biogenic Mn(IV) oxide was applied to remove Ra from mine water collected from a U mill tailings pond in the Ningyo-toge center. Just 7.6 mg of biogenic Mn(IV) oxide removed more than 98% of the $^{226}$ Ra from 3 L of mine water, corresponding to a distribution coefficient of 10 $^{7.4}$ mL/g for Ra at pH 7. The obtained value was convincingly high for practical application of biogenic Mn(IV) oxide in water treatment.

Language	:	English
Journal	:	Chemosphere
Volume	:	355
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Pages	:	p.141837_1 - 141837_11
Publication Year/Month	:	2024/05
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Paper URL	:	https://doi.org/10.1016/j.chemosphere.2024.141837
DOI for research data	:	Link to research data related to this paper/report.
Keywords	:	生物性マンガン酸化物; ラジウム
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Registration No. : AA20240025
JAEA Abstracts No. : 52000483
Paper Submission No. : 27904

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