Fungus-promoted transformation of lanthanides during the biooxidation of divalent manganese

Yu, Q.; Onuki, Toshihiko; Tanaka, Kazuya ; Kozai, Naofumi ; Yamasaki, Shinya*; Sakamoto, Fuminori ; Tani, Yukinori*

Although microorganisms possess high sorption capability for lanthanides (Lns), their biological response affecting Lns migration is unclear. We investigated the effects of microbial activity on transformation of Lns by contact of Lns with Aeremonium strictum under metabolically active condition with Mn(II). A biomolecule that specifically complex to Ce(IV) was found to be released from the fungal cell, facilitating the desorption of Ce(IV) from Mn oxide. This biomolecule was not associated with any other trivalent Lns or Fe, which differed from those non-nuclide-specific organic substances released from resting cells, as reported previously.

Language	:	English
Journal	:	Geochimica et Cosmochimica Acta
Volume	:	174
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Pages	:	p.1 - 12
Publication Year/Month	:	2016/02
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Paper URL	:	https://doi.org/10.1016/j.gca.2015.11.004
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Keywords	:	Rare Earth Element; Microorganisms; Mn oxide
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Registration No. : AA20150467
JAEA Abstracts No. : 44000699
Paper Submission No. : 17314

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