同时从合成废水中去除硫化物和二碳酸盐,使用藻类辅助的微生物燃料电池
Amitap Khandelwal1, Piet N L Lens1
1Department of Microbiology, School of Natural Sciences and Ryan Institute, University of Galway, Galway, Ireland.
Environmental technology
|August 3, 2023
概括
这项研究引入了一种藻类辅助的微生物燃料电池 (AMFC),通过去除二氧化碳和硫化来净化沼气,同时产生电力. 该AMFC提供高效的生物气清洁和废物能量回收.
科学领域:
- 环境生物技术 环境生物技术
- 可再生能源系统可再生能源系统
- 生物化学工程 生物化学工程
背景情况:
- 无氧消化 (AD) 是废物整治和能量回收的关键,但由于CO2和H2S等污染物,沼气需要净化.
- 直接生物气利用受到杂质的限制,需要高效的去除技术.
研究的目的:
- 开发和评估一种藻类辅助的微生物燃料电池 (AMFC),用于同时净化生物气和产生生物电力.
- 通过使用AMFC技术,研究从生物气中去除CO2和H2S.
- 评估用于藻类生物质生产的元素硫回收和二氧化碳利用的潜力.
主要方法:
- 在AMFC的阳极和阴极室中使用溶解的硫化物和二碳酸盐进行了实验.
- 硫化物度从100至800毫克/升变化,以确定最佳的去除和发电.
- 性能是根据硫化物去除效率,功率密度,哥伦布效率和二氧化碳减排来评估的.
主要成果:
- 在所有测试度 (100-800 mg/l) 中,AMFC的硫化物去除效率超过97%.
- 最佳性能,硫化物去除率为98.87%,功率密度为24.99mW/m3,在400mg/l硫化物下观察到.
- 该系统将总度 (CO2,碳酸盐,二碳酸盐) 降低了49.54%,并实现了7.25kWh/m3的总能量回收 (电力和藻类脂质能量).
结论:
- 藻类辅助的微生物燃料电池是一个有前途的技术,用于同时净化沼气和产生生物电力.
- AMFC有效地去除H2S和CO2,有潜在的有价值的副产品回收和增强的能源输出.
- 进一步优化是可能的,特别是在低于300毫克/升的硫化物度下,以最大限度地提高工艺效率和发电.
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