在酸性和精神性条件下使用混合无氧培养的选择性合成气发酵到酸盐
Dominik Andreides1, Marco A Lopez Marin1, Jana Zabranska1
1Department of Water Technology and Environmental Engineering, Faculty of Environmental Technology, University of Chemistry and Technology Prague, Technicka 1905, 166 28 Prague, Czech Republic.
Bioresource technology
|December 23, 2023
概括
合成气发酵到酸盐的过程随着温度和pH值的降低而有所改善. 这项研究发现了酸盐产量和气体消耗的最佳条件,即使合成气中的含量很高.
科学领域:
- 生物技术和生物工程 生物技术和生物工程
- 环境微生物学 环境微生物学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 合成气发酵到酸盐是利用合成气的关键方法,特别是当含量高时.
- 合成气中的高度可以抑制传统的生物甲化过程.
- 了解环境因素对这种生物转换的影响对于优化效率至关重要.
研究的目的:
- 为了研究酸性pH值和心理友好温度 (28°C和20°C) 对连续合成气发酵到乙酸盐的影响.
- 评估这些条件对生物转化效率和无氧微生物联盟多样性的影响.
- 确定最大限度地提高酸盐产量和燃气消耗的最佳条件.
主要方法:
- 进行了实验室规模的连续合成气发酵实验.
- 该研究评估了不同的酸性pH值和两个心理友好温度 (28°C和20°C).
- 使用PICRUSt2预测分析了微生物社区组成和代谢潜力.
主要成果:
- 随着温度和pH值的下降,乙酸盐的产量增加.
- 最高的 (H2) 和一氧化碳 (CO) 消耗率是在20°C和pH4.5.5时观察到的.
- 在测试条件下,甲生成活性并未完全抑制,微生物群落随温度变化而变化.
结论:
- 降低pH值和温度可以提高合成气发酵过程中的酸盐产量.
- 心理条件和酸性pH值可以优化,以便有效地将合成气转化为酸盐.
- 环境因素显著影响微生物群落结构和参与合成气发酵的代谢途径.
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