外部电压调节在配备铁阳极的微生物电解细胞中从发酵液中回收和维亚尼特:性能和机制
Ting Zhao1, Zhihong Liu2, Zhengtong Guo1
1Department of Water Supply and Drainage, Taiyuan University of Technology, Taiyuan, China.
Journal of environmental management
|April 4, 2025
概括
使用0.8V的铁阳极优化微生物电解细胞 (MEC),最大限度地提高的产量,并实现100%的去除,恢复维亚尼特. 这种电压增强了微生物群落和基因表达,以获得高效的生物能量和资源回收.
科学领域:
- 环境科学 环境科学
- 生物技术是生物技术.
- 电化学 电化学 电化学
背景情况:
- 使用铁阳极的微生物电解细胞 (MEC) 可以增强的生产和从废物生物质中回收vivianite.
- 性能受微生物群落和铁离子水平的影响,而铁离子水平受到应用于电压的影响.
研究的目的:
- 研究不同应用电压 (0.4V,0.6V,0.8V,1.0V) 对MEC中生产和维亚尼特回收的影响.
- 了解驱动这些过程的潜在微生物和遗传机制.
主要方法:
- 带有铁阳极的MEC在不同的电压下运行.
- 测量了的产生,的去除效率和维维亚尼特的纯度.
- 分析了微生物社区组成和功能基因表达.
主要成果:
- 施加0.8V的电压产生了最高的生产率 (11.17 mmol/g COD) 和100%的去除在3天内,与高纯度vivianite (92.7%).
- 0.8V显著改变了微生物群落,增加了电化学活跃的细菌,无氧发酵细菌和不相似的降铁细菌.
- 关键的生产基因被调高,而同类乙生成基因被调低到0.8V.
结论:
- 施加的0.8V电压优化了铁阳极MEC中的协同和回收.
- 这种电压增强了微生物活动和基因表达,这对于有效的生物能源和资源回收至关重要.
- 这些发现为改善MEC在废物回收利用方面的表现提供了洞察力.
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