铁基纳米颗粒对黑暗发酵生物生产的不同贡献:朝着合理选择应用的方向

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Geng Luo¹, Mei-Yi Bao², Jie Ding¹

¹National Engineering Research Center for Safe Disposal and Resources Recovery of Sludge, Harbin Institute of Technology, Harbin 150090, China; State Key Laboratory of Urban-rural Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China.

Bioresource technology

|March 7, 2026

概括

基于铁的纳米粒子在暗发酵 (DF) 中显著提高了生物生产 (BHP). 不同的纳米粒子通过改变微生物群落和电子转移,提供独特的好处,如提高产量或更快的速度.

科学领域:

生物技术和生物工程生物技术和生物工程
环境科学环境科学
材料科学材料科学材料科学

背景情况:

通过暗发酵 (DF) 生产生物 (BHP) 是一个有前途的可再生能源技术.
基于铁的纳米粒子 (Fe-NPs) 已经显示出增强BHP的潜力,但它们的具体机制尚不清楚.
了解各种Fe-NP的差异效应对于优化DF过程至关重要.

研究的目的:

研究不同基于铁的纳米颗粒对暗发酵的独特物理化学和生物化学增强效应.
阐明纳米颗粒影响生物产量,生产率和微生物群落结构的机制.
为选择适当的纳米颗粒提供基础,以有针对性地改善生物生产.

主要方法:

基于铁的不同纳米粒子 (nZVI,γ-Fe2O3,Fe3O4) 对暗发酵的影响的比较.
对生物的产量,生产速度和滞后阶段的分析.
微生物社区分析使用16S rRNA基因测序来评估细菌群体的变化.

主要成果:

零价值铁纳米颗粒 (nZVI) 通过形成电子转移网络,显著提高了BHP产量到1.79mol H2/mol基质.
玛铁氧化物 (γ-Fe2O3) 增强了最大BHP速率,而磁铁 (Fe3O4) 通过提高导电性缩短了滞后阶段.
nZVI促进了Clostridium,同时抑制了Limosilactobacillus,而γ-Fe2O3和Fe3O4对微生物组成的影响不那么明显.

结论:

不同的铁基纳米颗粒在黑暗发酵过程中对BHP动力学和微生物结构产生不同的影响.
nZVI有效地提高了整体BHP产量,而γ-Fe2O3和Fe3O4则分别在速度和滞后阶段减少方面提供了好处.
这项研究为合理选择纳米颗粒以优化生物生产提供了机制性见解.

关键词:

黑暗发酵黑暗发酵工程应用工程应用程序铁纳米粒子是一种铁纳米粒子.机制分析机制分析

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