Sorption of Co ions on biogenic Mn oxides procuced by a Mn-oxidizing fungus, Paraconiothyrium sp.-like strain

K. Sasaki, M. Matsuda, T. Urata, T. Hirajima, H. Konno

研究成果: 書籍/レポート タイプへの寄稿会議への寄与

1 被引用数 (Scopus)

抄録

Sorption of Co(II) on the biogenic Mn oxide produced by a Paraconiothyrium sp.-like strain was investigated. The biogenic Mn oxide, which was characterized to be poorly crystalline birnessite (Na4Mn(III) 6Mn(IV)8O27 • 9H2O) bearing Mn(III) and Mn(lV) in the structure, showed approximately 6.0-fold higher efficiency for Co(II) sorption than a synthetic Mn oxide. XP-spectra of Co 2p for the biogenic and synthetic Mn oxides after Co(II) sorption indicate that Co was immobilized as Co(III) on the surface of Mn oxides, clearly suggesting that redox reaction occurs between Co(II) ions and each Mn oxides. The Co(II) ions would be initially sorbed on the vacant sites of the surface of biogenic Mn oxide, and then oxidized to Co(III) by neighbor Mn(III/IV) atoms to release Mn(II). For the synthetic Mn oxide, release of Mn(II) was negligibly small because the oxidant is only Mn(IV) in ramsdellite (γ-MnO 2). The Mn(II) release from the biogenic Mn oxide during Co(II) adsorption would be not only from weakly bounded Mn(II), but also from redox reaction between Mn(III/IV) and Co(II) ions.

本文言語英語
ホスト出版物のタイトルBiohydrometallurgy
ホスト出版物のサブタイトルFrom the Single Cell to the Environment
出版社Trans Tech Publications
ページ607-610
ページ数4
ISBN(印刷版)0878494529, 9780878494521
DOI
出版ステータス出版済み - 1月 1 2007
イベント17th International Biohydrometallurgy Symposium, IBS 2007 - Frankfurt am Main, ドイツ
継続期間: 9月 2 20079月 5 2007

出版物シリーズ

名前Advanced Materials Research
20-21
ISSN(印刷版)1022-6680

その他

その他17th International Biohydrometallurgy Symposium, IBS 2007
国/地域ドイツ
CityFrankfurt am Main
Period9/2/079/5/07

!!!All Science Journal Classification (ASJC) codes

  • 工学一般

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