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通过铁氧化细菌的生物矿化去除Pseudarthrobacter sp. 铁7 Fe7 铁7 Fe7 铁7 Fe7

Xia Fan¹, Hanxiao Zhang¹, Qian Peng¹

¹College of Biology and Agriculture Resources, Huanggang Normal University, Huanggang 438000, China.

|December 23, 2023

概括

这项研究表明,氧化铁的细菌,特别是Fe7菌株及其细胞外酶可以通过生物矿化和沉有效地从受污染的水中去除有毒的 (As(III) 和As(V)).

科学领域:

环境微生物学环境微生物学
生物修复是一种生物修复.
地质化学地质化学

背景情况:

水中的污染对全球健康构成重大风险.
氧化铁的细菌为消除提供了一个潜在的生物解决方案.

研究的目的:

为了研究Fe(II) 氧化细菌,菌株Fe7 (属*Pseudarthrobacter*) 在从水中去除物种的有效性.
描述由Fe7菌株形成的铁矿物沉和它们的去除能力.
评估Fe7菌株细胞外酶在修复中的作用.

主要方法:

使用16S rRNA基因测序和家族遗传学分析分离和识别Fe(II) 氧化细菌 (菌株Fe7).
使用X射线衍射,X射线光电子光谱学和能量分散式X射线光谱学对铁矿物沉物的表征.
与Fe7菌株和物种 (As(III,As(V)) 进行共同培养实验,以评估去除率.
酶活性测定和细胞外酶液的应用,用于去除研究.

主要成果:

菌株Fe7有效氧化了Fe (II) 并产生含有Fe (III) 的铁沉物.
与Fe7菌株共同培养,在72小时内几乎完全消除了 (III) (99.9%) 和 (V) (96.9%).
仅铁沉物就能在3小时内去除100%的 (III) 和 (V).
来自Fe7菌株的细胞外酶在2小时内显示出高效的去除亚III (高达100%) 和亚V (高达100%).

结论:

通过Fe7菌株的铁生物矿化,由此产生的铁沉物及其细胞外酶在去除化物和酸盐方面都有效.
这种微生物和酶方法为污染的水生环境的生物修复提供了一个有希望的策略.

关键词:

氧化Fe (II) 的细菌会导致氧化.伪甲状腺细菌是一种伪甲状腺细菌.除除除的方法生物矿物化生物矿物化铁矿石沉物是铁矿石的沉物.

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