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通过基于多海姆的细胞外电子转移实现的图形生物炭-anammox

YanFei Tang¹, Eakalak Khan², April Z Gu³

¹Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China; School of Civil and Environmental Engineering, Cornell University, Ithaca, NY 14850, USA.

|October 10, 2025

概括

这项研究介绍了一种新的生物炭辅助的anammox系统,用于高效的去除. 该系统使用生物炭.

科学领域:

环境微生物学环境微生物学
生物技术是生物技术.
废水处理废水处理

背景情况:

阿纳莫克斯工艺提供了无碳的去除,但由于依赖传统的化和脱化而受到限制.
这些相互关联的过程可以产生温室气体并增加有机碳需求,从而减少anammox过程的环境效益.

研究的目的:

开发一种创新的生物炭辅助的anammox系统,以克服传统去除方法的局限性.
调查生物炭的石墨缺陷在促进氨氧化过程中的细胞外电子转移 (EET) 中的作用.

主要方法:

设计了一个生物炭辅助的anammox系统,利用具有高图形缺陷密度的生物炭.
采用元基因组和体外测试来阐明微生物相互作用和电子转移机制.
在不同的条件下,量化去除效率和温室气体排放.

主要成果:

在800°C下4小时 (BC800-4小时) 生产的生物炭表现出优越的电子接受能力,支持完整的氨氧化.
该系统在没有外部亚酸盐的情况下实现了62%的去除,大大减少了28%的N2O排放.
确定了一种合作性微生物网络,涉及悬浮无氧氨氧化细菌 (AnAOB) 和生物炭上的生物膜形成细菌.

结论:

生物炭通过跨物种EET通过AnAOB促进依赖氧胺的氨氧化,这是由石墨缺陷所实现的.
分隔的微生物社区结构对于有效的电子转移到生物炭至关重要.
这种生物炭-亚纳摩克斯协同作用为废水处理中可持续和低排放的除提供了一个有希望的战略.

关键词:

另一个终端电子接受器.亚纳姆莫克斯 (Anammox) 是一个设计的生物碳.细胞外电子转移细胞外电子转移排放的氧化排放量.污水处理污水处理污水处理

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