戈伊矿被酸性细菌溶解后发生的作用
Srdjan Stanković1,2, Axel Schippers1
1Federal Institute for Geosciences and Natural Resources (BGR), Hannover, Germany.
Frontiers in microbiology
|June 7, 2024
概括
喜欢酸的细菌,包括Acidithiobacillus物种,被测试了它们溶解石的能力. 这些微生物的铁性铁减少对戈矿溶解的影响很小,特别是在自然样本中.
科学领域:
- 地质化学 地质化学
- 环境微生物学 环境微生物学
- 生物技术是生物技术.
背景情况:
- 酸性细菌在矿物溶解中发挥作用,与酸性矿井排水和生物溶解有关.
- 对于了解铁循环和资源回收来说,戈伊的溶解至关重要.
研究的目的:
- 为了研究铁性降解铁的作用,酸性细菌在石溶解中的作用.
- 为了比较微生物活动对天然和合成石的影响.
主要方法:
- 实验室批量培养化实验是在有氧和无氧条件下进行的.
- 使用了具有良好的特征的天然和合成哥石样本.
- 培养物包括 lithoautotrophic (Acidithiobacillus thiooxidans,At. 在亚特兰大. 铁氧化物, 在. ) 和有机异质型 (Acidiphilium cryptum) 酸性细菌.
主要成果:
- 在对照试验中,所有测试的细菌都保持了活力,并有效地减少了铁酸铁.
- 戈伊石溶解在天然戈伊石样本中可以忽略不计.
- 观察到一些溶解与合成石,与先前的研究一致.
- 发现微生物降低铁铁在高度酸性条件下增强了,但没有启动goethite溶解.
结论:
- 在低pH值下,铁的降铁微生物活性对于石的溶解来说比元素硫氧化更不显著.
- 微生物的铁铁还原本身并不能在酸性环境中启动石的溶解.
- 天然甲基石的溶解不受测试中的铁性降铁酸性细菌的显著影响.
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