试点微生物电解电池关闭了用于将水热湿废物转化为喷气式燃料的循环
Jinyue Jiang1, Lin Du1, Buchun Si2
1Department of Civil and Environmental Engineering, Princeton University, Princeton, NJ 08544, USA; The Andlinger Center for Energy and the Environment, Princeton University, Princeton, NJ 08544, USA.
Water research
|October 26, 2024
概括
这项研究表明,将微生物电解 (MEC) 与水热液化 (HTL) 结合起来,可以处理废水并产生 (H2). 该过程支持闭环生物原料升级,以实现可持续的燃料生产.
科学领域:
- 环境科学 环境科学
- 生物技术是生物技术.
- 化学工程是化学工程的重要组成部分.
背景情况:
- 全球向净零排放过渡需要有效的湿废物管理和资源回收.
- 水热液化后的废水 (PHW) 提出了资源利用的处理挑战和机会.
研究的目的:
- 评估试点规模微生物电解细胞 (MEC) 与水热液化 (HTL) 的整合可行性.
- 为了实现同时进行PHW处理和高效的 (H2) 生产,用于生物原料的升级.
主要方法:
- 单个MEC反应堆的长期运行,具有固定的阳极潜力.
- 优化阴解物pH值和盐度以抑制甲生成和乙生成.
- 多个MEC的现场并行和串行操作使用实际的PHW.
主要成果:
- 通过固定阳极潜力实现了快速MEC启动.
- 记录的高电流密度为16.6 A m-2 (合成废水) 和9.3 A m-2 (PHW).
- 创纪录的H2生产率为0.5 L L<0xE1><0xB5><0xA3> day−1 在MECs>10 L尺度下实现.
- 最佳的化学氧需求 (COD) 到H2产量达到0.127kg-H2每公斤-COD.
结论:
- 组合的MEC-HTL系统为PHW处理和H2生成提供了可行的解决方案.
- 该过程支持生物原料到喷气式燃料的自给自足,闭环升级.
- 阳极生物膜适应环境条件影响性能.
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