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新型缓释碳源提高了微生物燃料电池中的阳脱和发电效率
Congyu Li1, Yanjie Zhang2, Yu Ling3
1State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, PR China; College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China.
Environmental research
|July 16, 2023
概括
本研究引入了一种用于微生物燃料电池 (MFC) 的新型缓释碳源填充剂 (CPSP),以改善废水处理. CPSP提高了MFC性能,增加了电压和功率密度,同时有效地去除了酸盐和有机物质.
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:
- 微生物燃料电池 (MFC) 有效处理含有有机物和酸盐的废水.
- 在MFC中,传统的碳来源面临着诸如高成本和难以控制剂量的挑战.
- 开发高效和具有成本效益的碳来源对于MFC在污水处理中的应用至关重要.
研究的目的:
- 为MFCs开发和评估一种新的缓释碳源填充剂 (CPSP).
- 调查CPSP对MFC性能的影响,包括脱和发电.
- 了解与CPSP添加相关的动力学和微生物社区变化.
主要方法:
- 玉米和聚烯酸 (PCL) 与聚乙烯醇和藻酸盐相结合,形成了CPSP.
- 将CPSP添加到MFC的解质中,用于结合的固相和阳极脱化.
- 监测MFC性能,包括电压,功率密度和基板降解.
- 使用汉-莱文斯皮尔模型进行了动态分析.
- 分析了微生物社区结构和脱基因合成.
主要成果:
- 带有CPSP (MFC-C) 的MFC的启动时间稍长,但实现了更高的最大输出电压 (648.4 mV) 和功率密度 (2738 mW/m3).
- 降解过程遵循不同的去除和发电阶段.
- 动力学证实CPSP增强了MFC对NO3−-N的亲和力和耐受性,提高了coulombic效率.
- 观察到微生物群落的显著变化和脱功能基因的促进.
结论:
- CPSP是一种可行的缓释碳源,用于提高废水处理中的MFC性能.
- 这种新型的碳来源促进了合脱,并改善了能量回收.
- 这一策略为通过先进的材料设计优化MFC提供了一个有前途的方法.
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