在不同温度下,水表微生物群落通过硫化二烯矿化
Mohammad Sufian Bin Hudari1, Carsten Vogt1
1Department of Technical Biogeochemistry, Helmholtz Centre for Environmental Research - UFZ, 04318 Leipzig, Permoserstraße 15, Germany.
FEMS microbiology ecology
|July 29, 2025
概括
高温含水层热能储存 (HT-ATES) 影响碳化合物的降解. 虽然45°C显示出最大的托洛矿化,但温度转移超过38°C对微生物群体产生了负面影响.
科学领域:
- 环境微生物学环境微生物学
- 地质化学 地质化学
- 可持续的能源技术 可持续的能源技术
背景情况:
- 高温含水层热能存储 (HT-ATES) 是一个有前途的碳中和加热/冷却解决方案,用于城市地区.
- 城市环境中的含水层经常被碳化合物污染,因此需要了解HT-ATES运行期间污染物的命运.
- HT-ATES对天然碳化合物降解过程的影响在很大程度上仍未被探索.
研究的目的:
- 研究温度和热变化对硫酸盐减少条件下的多烯微生物矿化的影响.
- 为了确定能够在各种温度下降解多烯的微生物群落,与HT-ATES相关.
主要方法:
- 从碳化合物污染的含水层材料中丰富出不同的托洛矿化,硫酸盐降解微生物联合体.
- 在包括12°C,20°C,25°C,38°C和45°C在内的温度下化联合体.
- 分析微生物群落组成和不同温度和温度变化后的多烯矿化率.
主要成果:
- 托卢矿化率在38°C时最低,在45°C时最高.
- 适应较低温度 (12°C,25°C) 的微生物群体在暴露于温度≥38°C时表现出降低的能力.
- 社区的组成因温度而异,在12°C时占主导地位的是Desulfosporosinus,在20°C-25°C时占主导地位的是各种硫酸盐降解剂,在45°C时占主导地位的是热友性类型.
结论:
- 水表微生物群体可以在降硫酸盐条件下在各种温度范围内矿化二烯,在45°C时观察到最佳活性.
- 与HT-ATES运行相关的温度变化可能会对土著微生物群落的碳化合物降解能力产生负面影响.
- 45°C似乎是被研究的含水层联盟对无氧二烯矿物化的上热极限.
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