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养策略对用混合微生物培养物对西洛斯电极发酵的影响

Yu Sun¹, Antti J Rissanen², Gaia Salvatori³

¹Faculty of Engineering and Natural Sciences, Tampere University, Korkeakoulunkatu 8, 33720 Tampere, Finland.

Bioresource technology

|June 10, 2025

概括

重复批次的阴极电发酵 (CEF) 使用酸增强酸盐和丁酸盐生产. 与连续系统和开放电路控制相比,这种方法改善了微生物的新陈代谢和产量.

科学领域:

工业生物技术工业生物技术
微生物电化学微生物电化学
发酵技术的发酵技术

背景情况:

氧化发酵效率受到工业生物技术中氧化还原失衡的限制.
阴极电发酵 (CEF) 通过调节微生物新陈代谢和电子转移提供了一个解决方案.
与西洛混合培养CEF的应用仍然未被探索.

研究的目的:

为了研究使用西洛斯的混合培养CEF的养策略.
提高碳酸酸 (酸和丁酸) 的生产速度和产量.
为了比较重复批次和连续CEF系统.

主要方法:

使用重复批次和连续阴极电发酵系统.
保持了 -0.40 V 的平衡阴极电位,而不是标准的电极.
在25天的时间里,分析了微生物社区的组成和碳酸酸的产生.

主要成果:

重复批量CEF系统显示了增强的,一致的阴极辅助代谢,用于酸盐和丁酸盐生产.
在重复批次系统中,与对照组相比,酸盐的产率系数增加了1.57倍,酸盐的产率系数增加了1.64倍.
连续的CEF系统没有显示出正极辅助代谢.
微生物分析表明,Clostridium在西洛斯电气发酵中起着关键作用.

结论:

重复批次CEF是一种有前途的策略,可以改善向碳酸酸的化酶发酵.
这种方法有效调节微生物的新陈代谢,以获得更高的产量.
克洛斯特里物种对于成功的阴极氧化糖电发酵至关重要.

关键词:

生物膜是一种生物膜.碳素酸是碳素酸中的一种.阴极辅助的新陈代谢是以阴极为辅助的.消化的污水污泥.选择压力选择压力

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