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在无氧混反应堆中以乙醇发酵塔皮奥卡废水:性能评估和微生物社区分析

Kharisrama Trihatmoko¹, Takahiro Watari², Thu Huong Nguyen³

¹Department of Science of Technology Innovation, Nagaoka University of Technology, Niigata 940-2188, Japan.

Bioresource technology

|January 27, 2025

概括

乙醇发酵可以处理塔皮奥卡废水,但生产不一致. 微生物的转变影响着乙醇和甘油的生产,影响整体处理效率.

科学领域:

环境微生物学环境微生物学
生物化学工程生物化学工程
废水处理废水处理

背景情况:

塔皮奥卡废水的无氧消化是耗时的.
乙醇发酵是一种潜在的替代处理方法.
塔皮奥卡废水含有高化学氧气需求 (COD).

研究的目的:

为了评估用于塔皮奥卡废水处理的乙醇发酵.
分析发酵过程中微生物群落的动态.
了解影响乙醇和甘油生产的因素.

主要方法:

在300天的时间内,在一个四列无氧混反应堆中,对模拟的陶废水 (6900毫克COD L-1) 进行处理.
监测乙醇和甘油生产情况.
使用分子技术分析微生物社区的变化.

主要成果:

不一致的乙醇生产 (10-15天循环),最大产量为51.0 ± 2.2毫克COD L-1.
糖醇形成的增加 (高峰10.3±1.7毫克COD L-1) 与乙醇生产的下降相关.
93%的高COD去除效率通过生物质形成和沉积而实现.
在乙醇生产过程中确定了主要的细菌 (Clostridium sensu stricto 11,Ethanoligenens) 和真菌 (Sordariomycetes,Debaryomycetaceae,Pichia),在糖醇形成过程中确定了Helotiales.

结论:

乙醇发酵是一种可行的,尽管不一致的, tapioca 废水处理方法.
微生物社区的动态,特别是细菌和真菌主导之间的转变,对于优化乙醇和甘油生产至关重要.
对微生物转移的进一步研究可以提高这种废水处理过程的效率.

关键词:

乙醇生产乙醇生产糖的形成糖的形成黑罗类动物 (Helotiales) 是一个类型.微生物的动力学剩余的粉含量剩余的粉含量

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