通过使用单微生物电解细胞从食品废弃物液中有效地生产气
Shuyue Ma1, Yifan Zhang1, Lingli Tu1
1Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510006, China.
Environmental research
|October 16, 2024
概括
这项研究优化了微生物电解细胞 (MECs),用于从食品废弃物液中增强 (H2) 生产. 高pH和高电压显著提高了H2输出和有机物去除.
科学领域:
- 生物技术是生物技术.
- 环境工程 环境工程
- 可再生能源可再生能源是可再生能源.
背景情况:
- 微生物电解细胞 (MEC) 为生物生产提供了一个有前途的途径.
- 食品废弃物液为MEC提供了可行的基质,但需要高效的加工策略.
研究的目的:
- 制定一个有效的战略,以提高单室MEC使用食品废弃物水的 (H2) 产量.
- 调查运行参数,如pH值,应用电压和负压对MEC性能的影响.
主要方法:
- 在单室MEC中对各种pH值 (8.5-11.2),应用电压 (0.8-2.4V) 和负压 (-50kPa) 进行系统测试.
- 使用碳刷作为阳极和不钢刷作为阴极在1.2L MEC设置中.
- 监控电流密度,H2度,H2生产率,H2产量,以及化学氧气需求 (COD) 的去除.
主要成果:
- 在最佳条件下 (pH 11.5,2.4 V),最大电流密度为121.9 A/m3和91.9%的H2度.
- 实现了853.2 L/m3•d的最大H2生产率和26.3 mmol/g的COD的H2产量.
- 已证明有效的有机降解,在21小时内消除68.3%的COD.
结论:
- 高pH值和应用电压对于提高MEC处理食品废弃物浸物的H2生产和发电量至关重要.
- 负压控制在改善MEC性能方面效果不如pH调整.
- 优化的MEC战略为产生H2和废物处理提供了一种可持续的方法.
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