Recovery of Manganese from Mine Drainage using Biomineralization

利用生物矿化从矿山排水中回收锰

• 批准号: 12650913
• 负责人: SASAKI Keiko
• 金额: $ 2.43万
• 依托单位: Otaru University of Commerce
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12650913/
• 关键词: Manganese; Microorganisms; Mine Drainage; Biomineralization; Leptothrix discophora; マンガン酸化菌

Manganese-oxidizing fungus, isolated from spring in south of Hokkaido, and manganese-oxidizing bacteria Leptothrix discophora (ATCC 43162 and 51168) were applied to removal of Mn(II) ions from solutions at neutral pHs. The manganese deposits were characterized by XRD, XRF, XPS and FE-SEM.It was found that manganese-oxidizing bacteria, L. discophora (ATCC 51168), oxidized 24 ppm of Mn(II) ions, and that the bacteria kept higher manganese-oxidizing activity in static culture than in shaking culture, because of keeping the sheath structure in the bacteria. The established medium compositions for the ATCC bacteria could not be directly applied to the oxidation of Mn(II) ions for the isolated fungus, therefore, modified. By reduction of 1/10 in concentrations of organic carbon sources in the medium, the fungus oxidized to remove over 50 ppm of Mn(II) ions from the solutions within one week. The fungus was identified to be Phoma sp. The fungus was useful to accumulate fine particles of the oxidized Mn sediments within itself.The bio-mineralized sediments were characterized to be non-crystalline Mn oxides by XRD, XRF, and XPS.

从北海道南部的春季分离出的锰氧化真菌，以及锰氧化细菌leptothrix concophora（ATCC 43162和51168）用于去除中性pHS的溶液中Mn（II）离子。 The manganese deposits were characterized by XRD, XRF, XPS and FE-SEM.It was found that manganese-oxidizing bacteria, L. discophora (ATCC 51168), oxidized 24 ppm of Mn(II) ions, and that the bacteria kept higher manganese-oxidizing activity in static culture than in shaking culture, because of keeping the sheath structure in the bacteria.因此，已建立的ATCC细菌的培养基组成不能直接应用于分离的真菌的Mn（II）离子的氧化。通过在培养基中减少1/10的有机碳源浓度，该真菌在一周内从溶液中氧化以除去50 ppm的Mn（II）离子。该真菌被确定为phoma sp。该真菌可用于积聚氧化的MN沉积物的细颗粒。生物矿物化沉积物被表征为XRD，XRF和XPS的非晶体Mn氧化物。

项目成果

K. Sasaki, H. Konno: "Morphological change of jarosite groups formed from biologically and chemically oxidized Fe(III) ions"Can. Mineral. 38. 45-56 (2000)

K. Sasaki、H. Konno：“由生物和化学氧化的 Fe(III) 离子形成的黄钾铁矾基团的形态变化”Can。

K Sasaki, K. Kurosawa, H. Konno: "Water treatment of manganese-rich mine drainage by manganese-oxidizing bacteria at neutral pH"Proc. Intl. Min. Process. Congress. B12b-18-24. (2000)

K Sasaki、K. Kurosawa、H. Konno：“中性 pH 值下锰氧化细菌对富锰矿山排水的水处理”Proc。

乗木新一郎: "演習で学ぶ環境"三共出版. 114 (2002)

Shinichiro Noriki：“通过练习来学习环境” Sankyo Publishing 114（2002）。

K. Sasaki: "Possibilities of environmental engineering use of manganese oxides formed by biomineralization"Kagaku-to-Kogyo. Vol. 54, No. 1. 48-48 (2001)

K. Sasaki：“环境工程利用生物矿化形成的氧化锰的可能性”Kagaku-to-Kogyo。

K. Sasaki, H. Konno: "Morphological change of jarosite groups formed from biologically and chemically oxidized Fe(III) ions"Can. Mineral. Vol. 38. 45-56 (2000)

K. Sasaki、H. Konno：“由生物和化学氧化的 Fe(III) 离子形成的黄钾铁矾基团的形态变化”Can。