在低温下丰富和应用依赖硫的非化微生物
Zhuo Jiang1, Paloma Garrido-Amador2, Boran Kartal3
1Key Laboratory of Water and Sediment Sciences, Ministry of Education, Department of Environmental Engineering, Peking University, Beijing, China; Max Planck Institute for Marine Microbiology, Bremen, Germany; Aluminum Corporation of China, Beijing, China.
Bioresource technology
|February 28, 2026
概括
依赖硫的脱有效地去除废水中的酸盐,即使在低温 (10°C). 微生物相互作用是关键,但有些细菌在5°C以下难以生存,影响效率.
科学领域:
- 环境微生物学 环境微生物学
- 废水处理技术 废水处理技术
- 生物地质化学循环的过程
背景情况:
- 使用硫化合物的脱是一种有前途的方法,用于从废水中去除酸盐,因为有机物质要求较低.
- 某些地区的低温限制了依赖硫的脱的应用.
- 了解微生物群落动态对于在寒冷环境中保持脱效率至关重要.
研究的目的:
- 研究微生物群体在低温下生存和脱能力.
- 为了确定关键的微生物和代谢相互作用涉及硫依赖的脱在寒冷条件下.
- 评估硫依赖脱的可行性,用于各种气候下的全面废水处理应用.
主要方法:
- 在不同温度 (25°C, 15°C) 下,富化依赖于硫酸盐的脱培养物.
- 在连续生物反应器中进行注射,并在低温 (10°C,5°C) 上运行.
- 分子分析 (例如16S rRNA基因测序) 来描述微生物社区结构和丰富性.
- 分析微生物联盟内的代谢相互作用和营养物质交换.
主要成果:
- 生物反应器在10°C时表现出高效的脱化,酸盐积累最小.
- 五种主要的微生物组成了核心的脱社区,表现出有利的代谢相互作用.
- 主要社区成员之间的基质交换增强了联盟对较低温度的适应.
- 在5°C时,Burkholderiaceae的生长限制破坏了代谢相互作用,导致酸盐的积累.
结论:
- 依赖硫的脱化可以在低至10°C的温度下有效运行,显示出广泛应用的潜力.
- 主导微生物之间的代谢相互作用对于在降低温度下保持脱是至关重要的.
- 低丰度的微生物可能在维持微生物社区在非常低的温度 (如5°C) 上的功能中发挥关键作用.
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