转化和微生物群落对芳香化合物应激的反应沿着异构化和有氧脱化过程进行异构化和有氧脱化
Weidong Xiao1, Ran Sun2, Lang Ran1
1School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, 710129, China.
Environmental research
|July 24, 2025
概括
芳香污染物并没有妨碍异构化和有氧脱 (HNAD) 的去除效率. 微生物群落适应,促进和芳香化合物的去除.
科学领域:
- 环境微生物学环境微生物学
- 生物技术是生物技术.
- 处理水处理水处理水处理
背景情况:
- 异质化和有氧脱 (HNAD) 可去除和耐火有机物.
- 芳香污染物对HNAD转化和微生物群落的影响尚不清楚.
研究的目的:
- 在芳香污染物压力下研究HNAD期间的转化和微生物社区反应.
- 评估HNAD在芳香污染物的存在下去除和有机化合物的效率.
主要方法:
- 已建立的有氧微观世界与氨酸,三二烯和氨酸.
- 监测的物种 (NH4+-N,NO3--N,TN) 和化学氧气需求 (COD).
- 分析了微生物社区结构,共发生网络和与碳和代谢相关的基因表达.
主要成果:
- 芳香污染物最初稍微抑制了NH4+-N和NO3--N的转化,但并没有显著影响最终的TN和COD去除效率 (>90%).
- 微生物多样性下降,和芳香化合物降解系 (Aromatoleum,Acinetobacter,Pseudomonas) 成为主导的.
- 芳香应激增强了微生物的连接性,促进了生物膜的形成,并增加了环境耐受性.
- 碳代谢基因丰富度下降,而代谢基因表达增加.
结论:
- 酸有效地去除和芳香化合物,微生物群落适应污染物压力.
- 了解微生物适应和关键基因表达,为污染水中的生物除提供了洞察力.
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