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异化金属还原菌还原赤铁矿研究
Authors
冯雅丽
张士元
+4 more
张茜
李浩然
毕耜超
王李娟
Publication date
1 January 2013
Publisher
Abstract
以实验室自制氢氧化铁为电子受体,醋酸钠为电子供体,从厌氧活性污泥中分离得到异化金属还原菌。将赤铁矿代替氢氧化铁作为电子受体对微生物进行驯化。通过单因素实验考察好氧、厌氧条件及pH、温度对反应过程的影响,并对反应机理进行研究。研究结果表明:赤铁矿颗粒逐渐由红色变深至棕黑色并具有磁性,分析表明异化金属还原菌可将赤铁矿中的Fe(Ⅲ)还原成Fe(Ⅱ),但反应不完全。反应生成的棕黑色颗粒物质主要成分为Fe3O4与Fe2O3的混合物;厌氧条件优于好氧条件,在温度为30℃,振荡速度为160 r/min,接种量为10%,pH为5.0,赤铁矿加入量为1.0 g/L的条件下,20 d后,Fe(Ⅱ)的浓度可达1.87 mmol/L,赤铁矿中的部分Fe(Ⅲ)还原为Fe(Ⅱ),在矿物颗粒表面沉积并与其结合反应生成磁铁矿(Fe3O4),增强了原矿的磁性
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Institutional Repository of Institute of Process Engineering, CAS (IPE-IR)
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oai:ir.ipe.ac.cn:122111/36791
Last time updated on 05/12/2019
Institutional Repository of Institute of Process Engineering, CAS (IPE-IR)
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oai:ir.ipe.ac.cn:122111/47289
Last time updated on 11/04/2021
Institutional Repository of Institute of Process Engineering, CAS (IPE-IR)
See this paper in CORE
Go to the repository landing page
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oai:ir.ipe.ac.cn:122111/9861
Last time updated on 09/11/2016