在床反应堆中扩大生物甲化:性能和技术经济可行性分析
Alexandros Chatzis1, Aikaterini Xirostylidou1, Konstantinos N Kontogiannopoulos2
1Laboratory of Chemical and Environmental Technology, Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece; Soil and Water Resources Institute, Hellenic Agricultural Organisation Dimitra, Thermi-Thessaloniki 57001, Greece.
Bioresource technology
|March 13, 2026
概括
床反应堆 (TBR) 中的生物甲化成功扩展到试点水平,实现了高甲纯度. 这种可持续的过程显示了成本竞争力,特别是可再生电力,用于低碳燃料生产.
科学领域:
- 生物技术和生物工程 生物技术和生物工程
- 可持续能源 可持续能源
- 化学工程是化学工程的重要组成部分.
背景情况:
- 生物甲化利用微生物联盟在流床反应堆 (TBR) 中是将CO2和H2转化为甲的一个有希望的途径.
- 从实验室扩展到工业应用的TBR系统带来了重大的工程和生物挑战.
研究的目的:
- 通过将微生物联盟优化的TBR系统扩展100倍,弥合实验室和工业规模的生物甲化之间的差距.
- 评估试点规模的TBR系统的性能,运营挑战和技术经济可行性.
主要方法:
- 进行了微生物联盟优化TBR系统 (1L到100L) 的100倍扩展.
- 在热友条件下 (55°C) 进行了364天的连续试点规模运行.
- 气体保留时间 (GRT),液压加载率,营养补充量和微量金属含量被监测和调整.
主要成果:
- 试点规模的TBR系统在1小时的GRT中达到>95%的CH4纯度,在3小时的GRT中达到99.7%的CH4峰值度.
- 代谢水稀释和低H2转化被确定为关键挑战,通过运营调整来缓解.
- 微量金属分析证实了足够的Fe/Ni/Co,但在产生大量水的情况下观察到稀释效应.
结论:
- 在TBR中扩大生物甲化过程在技术上是可行的,并实现了高甲纯度.
- 技术经济分析表明,基线生产成本为2.47欧元/千克液化天然气,可降至~1.7欧元/千克,低成本可再生电力.
- 生物甲化证明了具有成本竞争力,可持续的低碳甲生产的巨大潜力.
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