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将微生物群落定制为从废弃活性污泥中生产中链脂肪酸:内源与外源联盟的比较性能

Dengfei Li¹, Yuru Wang², Haifeng Qiang²

¹Department of Water Supply and Drainage, Taiyuan University of Technology, Taiyuan 030024, China; Shanxi-Zheda Institute of Advanced Material and Chemical Engineering, Taiyuan 030000, China.

Bioresource technology

|January 18, 2026

概括

将基质灭菌与酸盐合成细菌 (CSB) 结合起来,从废弃活性污泥 (WAS) 中显著增加了中链脂肪酸 (MCFA) 的产生. 这一战略增强了微生物群落,以实现更多的MCFA恢复.

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:

从废弃活性污泥 (WAS) 优化中链脂肪酸 (MCFA) 生产对于资源回收至关重要.
定制微生物群落是提高MCFA产量的关键,但有效的策略仍未得到充分探索.
基质灭菌与外源细菌在MCFA生产中的作用需要进一步研究.

研究的目的:

评估将基质灭菌与外源性酸盐合成细菌 (CSB) 结合用于从WAS.产生的MCFA的疗效.
为了比较这种策略与固体残留物和浮物分数中的内源微生物群落.
为了阐明微生物和代谢机制,提高了MCFA生产的基础.

主要方法:

使用基质灭菌加上外源CSB与内源微生物组的MCFA生产的比较.
分析微生物群落组成 (CSB和酸原丰富度) 在固体和超的阶段.
评估与酸盐生成相关的可溶性蛋白质利用率,二氧化碳动态和基因丰度.
生命周期评估 (LCA) 用于评估经济和环境可行性.

主要成果:

综合策略实现了最高的MCFA产量在上游生物中 (3935±21毫克COD/L).
外源性CSB添加增加了CSB在固体残留物和超浮物中的丰度.
结合策略的超级系统显示了富含酸原体,更高的可溶性蛋白质利用率,最大的二氧化碳交换,以及与酸盐相关的基因丰度增加.
生命周期评估表明了经济和环境的好处.

结论:

将基质杀菌与外源CSB相结合是一种高度有效的策略,可以从WAS中增强MCFA的生产.
这种方法优化了微生物社区的结构和功能,从而改善了资源回收.
这些发现为开发可持续和高效的MCFA从废物流中回收的方法提供了宝贵的见解.

关键词:

卡普罗阿特 (Caproate) 是一个链条的延长链条的延长环境影响环境影响转基因组学是指转基因组学.反向β-氧化过程中的反向β-氧化.

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