生物炭在n-卡酸生产中赋予微生物显著的耐氨毒性
Benteng Wu1, Richen Lin2, Jing Gu3
1Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China; MaREI Centre, Environmental Research Institute, University College Cork, Cork T23 XE10, Ireland; Guangdong Provincial Key Laboratory of High-Quality Recycling of End-of-Life New Energy Devices, Guangzhou 510640, China.
Water research
|September 7, 2024
概括
生物炭增强了微生物从废物流中产生n-caproic acid的产量,克服了氨的抑制. 这种可持续的方法可以提高生物转化过程中的产量和弹性.
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:
- 目前的n-酸生产是能源密集型的,阻碍了可持续的生物经济转型.
- 富含氨的废物流适合生物转化,但存在抑制性挑战.
研究的目的:
- 研究生物炭作为一种添加剂,以增强在氨抑制下微生物链的延长.
- 阐明生物炭提高生物转化性能的机制.
主要方法:
- 将生物炭添加到微生物培养中,处理富含氨的废物.
- 量化n-caproic酸的产量和滞后时间.
- 微生物社区结构和与电子转移相关的基因表达的分析.
主要成果:
- 在严重的氨气压力 (> 8 g N/L) 下,生物炭显著提高了n-卡酸产量 (40% - 158%) 并减少了滞后时间 (51% - 90%).
- 生物炭诱导了新的电子缩,增强了电子转移系统活动和系统导电性.
- 观察到电活性细菌 (Sporanaerobacter) 和相关基因 (导电性 pili,c型细胞染色体) 的丰富性增加.
结论:
- 生物炭在微生物链延长过程中赋予了对氨毒性的弹性.
- 生物炭促进了从有机废物中有效和可持续地生产n-caproic acid,支持循环生物经济的目标.
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