在无氧氨氧化氧化中,海绵铁介导的多重代谢过程的功能和机制
Lili Yang1, Wenxuan Li2, Hongjuan Zhu1
1College of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China.
Bioresource technology
|October 8, 2023
概括
海绵铁增强了Anammox的性能,以有效地去除废水中的. 这种方法使得总去除率提高了13%以上,尽管最初的设置时间较长.
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 生物地质化学循环
背景情况:
- 废水中的污染对环境构成重大风险.
- 安纳莫克斯 (无氧氧化) 是一种高效的生物去除工艺.
- 铁 (SI) 被探索为生物营养去除系统的潜在增强剂.
研究的目的:
- 研究海绵铁在增强Anammox过程中的功能机制.
- 评估SI对去除效率和微生物群落结构的影响.
- 阐明SI介导的代谢途径在Anammox去除中的作用.
主要方法:
- 使用和不使用海绵铁 (SI) 的Anammox反应堆的实施.
- 监测去除效率,可溶微生物产品 (SMP) 和细胞外聚合物物质 (EPS).
- 使用16S rRNA基因测序和多omics方法进行微生物社区分析.
主要成果:
- 补充海绵铁延长了反应堆的启动时间,但导致了稳定高效的去除.
- 与控制组相比,SI-Anammox系统实现了92.62%的总去除,比控制组增加了13.30%.
- SI的应用增加了SAA和EPS的含量,并丰富了关键的功能性微生物 (例如Candidatus_Brocadia,Nitrosomonas,Nitrospira).
结论:
- 海绵铁有效地提高Anammox的性能,从废水中提取优质的.
- 该机制涉及微生物活动增加,细胞外基质改变,以及特定微生物种群的丰富.
- 通过SI介导的Fe和N功能基因的增强对于Anammox系统中改善的去除至关重要.
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