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在单微生物电解细胞中高效生产气,在超的条件下使用可发酵基质
Wanjun Cui1, Haiping Luo1, Guangli Liu1
1Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China.
Waste management (New York, N.Y.)
|September 3, 2023
概括
超性条件显著提高了使用微生物电解细胞 (MEC) 来从食品废物中产生 (H2). 这种方法通过优化葡萄糖发酵和抑制不必要的微生物过程来增强能量转化和污染控制.
科学领域:
- 生物技术是生物技术.
- 环境科学 环境科学
- 电化学 电化学 电化学
背景情况:
- 食品浪费对能源转化和污染控制构成重大挑战.
- 微生物电解细胞 (MEC) 为可持续 (H2) 生产提供了一个有希望的途径.
- 调查超性条件对于优化MEC性能至关重要.
研究的目的:
- 在高性条件下的单室MEC中研究食品废弃物中的葡萄糖发酵和H2生产.
- 评估不同pH值和应用于电压对H2生成和纯度的影响.
- 了解微生物社区的动态和所涉及的代谢途径.
主要方法:
- 使用的单MEC以葡萄糖 (1 g/L) 为基质.
- 测试了不同的pH值 (7.0,9.5,11.2) 和应用电压 (0.8,1.2,1.6V).
- 分析了微生物群落和mcrA基因拷贝数量,以评估代谢活动.
主要成果:
- 增加pH值从7.0到11.2显著改善了H2的产生,并抑制了甲基生成.
- 在pH值11.2和1.6V时,最大电流密度达到180A/m3,H2纯度为93.3%,产量为7.72molH2/mol葡萄糖.
- 从葡萄糖发酵中产生的酸盐是主要的电子沉降器,而 * Methanobacterium alcaliphilum * 则主导着考古社区.
结论:
- 过的条件增强了从葡萄糖发酵中产生的酸盐的产生.
- 高pH抑制了合成酸盐氧化和性甲基生成,改善了H2产量.
- 这项研究展示了一种可行的方法,可以在高性条件下使用单MEC从可发酵基质中有效地采集H2.
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