氧化还原潜力塑造了处理废水的混合培养电活性生物膜的空间异质性
Xian Wu1, Guiqin Yang1, Junhui Guo2
1Guangdong Key Laboratory of Environmental Pollution and Health, College of Environment and Climate, Jinan University, Guangzhou 511443, China.
Bioelectrochemistry (Amsterdam, Netherlands)
|October 25, 2024
概括
电极潜力影响生物电化学系统 (BES) 中微生物群落的空间结构. 最佳潜能可以通过在阳极生物膜内选择性丰富电化学活性微生物 (EAM) 来提高BES性能.
科学领域:
- 生物电化学系统 (BESs) 是一种生物电化学系统.
- 微生物生态学 微生物生态学
- 环境微生物学 环境微生物学
背景情况:
- 电合成微生物 (EAM) 对生物电化学系统 (BES) 至关重要,通过电极表面的空间异质性影响性能.
- 优化电极潜力是提高BES性能的一种已知的策略,但其对阳极生物膜微生物社区结构的影响尚不清楚.
研究的目的:
- 研究不同电极电位如何影响阳极生物膜内的微生物群落的空间结构和组成,在复杂的基板养BES中.
- 了解电极电位,生物膜分层和特定微生物群体的丰富之间的关系.
主要方法:
- 使用复杂的基板养BES与废水注射剂.
- 在各种电极电位下开发了分层生物膜: -0.3V,0V,+0.3V和+0.6V (vs. SCE).
- 分析了生物膜社区结构和组成,使用结微粒组方法和高通量测序.
主要成果:
- 生物膜社区的空间异质性取决于电极电位.
- 与其他潜能相比,在+0.6V时观察到较少分层的社区结构.
- 内部生物膜层显示了Geobacter的丰富,而外层则丰富了Acinetobacter和Serratia,这表明了电子转移和物种间通信的分层.
结论:
- 电极潜力显著影响了BESs中阳极生物膜社区的空间异质性.
- 这项研究表明,通过操纵电极潜力来控制微生物社区结构和功能的潜力.
- 这些发现有助于理解高效的阳极微生物组通过电子潜能进行选择性丰富,以优化BES性能.
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