在新设计的生物反应器系统中,由Methanococcus maripaludis将CO2生物转化为甲能量:动力特征,参数优化和电网质量生产
Lei Zhou1, Jie Gao2, Le-Gang Chen2
1State Key Laboratory of Bioreactor Engineering and School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, PR China; Engineering Research Center of Microbial Enhanced Oil Recovery, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, PR China.
Bioresource technology
|September 9, 2025
概括
生物转化捕获的二氧化碳 (CO2) 转化为甲能源使用甲原体提高了石油回收效率. 这项研究优化了生物反应器过程,以获得适合天然气网的高纯度甲.
科学领域:
- 生物技术是生物技术.
- 环境科学 环境科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 二氧化碳增强石油回收 (CO2-EOR) 对中国油田的碳捕获,利用和储存 (CCUS) 至关重要.
- 从EOR回收的二氧化碳降低了整体的碳减排效率.
- 由甲基生物体将二氧化碳生物转化为甲提供了一个解决方案,但在实现高效率和满足天然气电网标准方面面临挑战.
研究的目的:
- 通过使用一种新的三生物反应器,研究二氧化碳转化为甲的过程.
- 为了确定Methanococcus maripaludis的甲生动力学.
- 为高效的甲生产优化运营参数.
主要方法:
- 使用新设计的三生物反应器,将二氧化碳转化为甲.
- 在气体透模式下运行,测量甲产量,OD600和辅酶F420含量.
- 使用修改后的Gompertz模型计算了甲生动力学.
主要成果:
- 确定了最佳条件:每分钟150转,H2/CO2比为4:1,以及20mL·min-1气体注入40分钟.
- 实现了10.95 mmol·L-1·d-1的多阶段连续转化甲生产率.
- 生产的甲比例为97.4%,残留的H2和CO2水平低于2%,符合电网标准.
结论:
- 该研究提供了CO2转化为甲的优化操作参数.
- 证明了从CO2中实现高效率,电网标准的甲生产的可行性.
- 提供理论支持和洞察力,用于扩大CCUS技术在油田.
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