外细胞电子转移用于有氧脱,由生物电催化系统与零碳源介导
Kun Wang1, Wentao Du1, Zilian Liu1
1Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming 650500, China.
Ecotoxicology and environmental safety
|November 18, 2023
概括
这项研究将有氧脱细菌 (ADB) 化,使用电力进行自营生长,提高废水处理效率. 新型生物电化学系统 (BEC) 显著提高了和四环素的去除,即使没有有机碳来源.
科学领域:
- 环境微生物学 环境微生物学
- 电化学 电化学 电化学
- 废水处理工程 废水处理工程
背景情况:
- 生物废水处理面临着电子转移缓慢和高碳源需求的挑战.
- 有氧脱细菌 (ADB) 对于去除至关重要,但通常需要有机碳.
- 优化电子转移和减少碳依赖是提高处理效率的关键.
研究的目的:
- 使用电刺激化有氧脱细菌 (ADB) 进行自生长.
- 调查细胞外电子转移 (EET) 机制在一个自营生物电化学系统 (BEC).
- 与传统方法相比,评估BEC的综合和复合污染物去除效率.
主要方法:
- 在零有机碳条件下用电刺激ADB,以诱导自性化.
- 研究细胞外电子转移 (EET) 机制.
- 评估BEC中的去除和同时存在的污染物 (例如四环素) 的去除.
- 将BEC性能与传统的膜生物反应器 (MBR) 进行比较.
主要成果:
- 与MBR相比,BEC实现了显著更高的酸盐-去除率 (95.42%),特别是在0.0的C/N比率下.
- 在复合污染条件下,BEC证明了酸 (94.52%) 和四环素 (91.50%) 的强有力的去除.
- 电化学试验证实了使用阴极供应的电子直接将酸盐减少到N2,验证了BEC的有效性.
结论:
- 通过电刺激对ADB的自化化提供了一种有前途的策略,可以加速电子转移并增强废水处理.
- 开发的生物电化学系统 (BEC) 有效地去除和降解污染物,没有外部有机碳来源.
- 在复杂的废水处理中,BEC比传统的MBR提供了更优质的替代方案,特别是在碳有限的条件下.
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