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涂层阴极对微生物电解细胞合无氧消化系统中甲生产途径的双刃剑效应

Changqing Liu¹, Qi Cao², Xingguang Luo³

¹College of Geographical Sciences, College of Carbon Neutral Future Technology, Fujian Normal University, Fuzhou 350007, China; Fujian College and University Engineering Research Center for Municipal Solid Waste Resuscitation and Management, Fuzhou 350007 Fujian, China.

Bioresource technology

|September 11, 2025

概括

微生物电解细胞-无氧消化系统中的涂层阴极表现出双重效应,增强一些甲生产途径,同时抑制其他途径. 这种复杂的影响提供了对优化生物气产生的洞察力.

科学领域:

生物技术是生物技术.
环境科学环境科学
微生物学微生物学

背景情况:

涂层阴极 (Pt-C) 在微生物电解细胞无氧消化 (MEC-AD) 系统中用于增强甲基生成.
然而,Pt-C材料具有固有的生物毒性,可能限制其有效性.
了解Pt-C对微生物群落和代谢途径的特定影响对于优化甲生产至关重要.

研究的目的:

研究涂装阴极在MEC-AD系统中对微生物代谢和甲基生成的多方面的影响.
阐明 Pt-C 影响微生物社区结构和功能的机制.
为潜在的优化策略确定受Pt-C治疗影响的关键甲基路径.

主要方法:

在MEC-AD系统中使用0.8V的涂层阴极.
分析甲产量和微生物群落组成.
基因表达分析以确定上调和下调的代谢途径.

主要成果:

达到0.8V (445.71毫升/gCOD) 的最高甲产量,尽管整体增强是有限的.
Pt-C处理刺激了生物膜间的电子转移,电解质运输,定数感应,蛋白质溶解和酸化.
促进了Methanobacteriaceae和Geobacteraceae的生长,升调基因和乙类甲基生成的基因,以及合成酸盐氧化.
抑制的形式和甲基变性甲基生成途径.
甲基变性甲原体,尽管丰度较低,在甲生产中发挥了重要作用.

结论:

涂层阴极对MEC-AD系统中的微生物代谢产生选择性的"双刃剑"效应.
Pt-C 影响微生物群落和代谢途径,促进某些甲基生成途径,同时抑制其他途径.
这些发现为优化无氧消化过程中甲 (CH4) 生产提供了机械洞察力.

关键词:

生物电化学无氧消化消化代谢过程中的代谢.甲生产途径甲生产途径金改性阴极是金改性阴极.议员数量检测是指对议员数量进行检测.

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