超越碳酸盐生物矿物化:为什么由 prokaryote 驱动的 CO2 封存需要整体评估
Richard Schinteie1, Veena Nagaraj2, Linda Stalker3
1CSIRO Energy, Lindfield, NSW, Australia.
Frontiers in bioengineering and biotechnology
|December 3, 2025
概括
微生物诱导碳酸盐沉 (MICP) 为大气二氧化碳封存提供了一个生物解决方案. 综合性生命周期评估对于准确的碳核算和可持续的气候变化减缓战略的应用至关重要.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 地质化学 地质化学
背景情况:
- 微生物诱导碳酸盐沉 (MICP) 是一种具有大气二氧化碳封存潜力的生物过程.
- 益生菌驱动的生物矿物化是复杂的,需要评估超出简单的碳酸盐形成.
- 对MICP的精确碳核算必须考虑各种代谢途径和影响净碳储存的因素.
研究的目的:
- 为了突出表现出由 prokaryote 驱动的生物矿物化的复杂性,用于碳封存.
- 强调需要对MICP流程进行整体评估.
- 在MICP应用中确定精确碳核算的关键因素.
主要方法:
- 对参与MICP的关键代谢途径的审查 (例如,碳酸,尿解,光合作用,硫酸盐减少).
- 分析影响碳酸多态稳定性和碳储存耐久性的因素.
- 评估净碳捕获估计值,考虑到呼吸 CO2 释放,生长阶段和基板排放.
主要成果:
- MICP涉及多种不同的代谢途径,对矿物沉和碳足迹的贡献有所不同.
- 碳酸多态体影响储存碳的长期稳定性.
- 净碳捕获估计通常是不准确的,因为忽视了微生物呼吸和基质排放等因素.
结论:
- 精确的碳核算需要区分短暂的微生物有机碳和长期的矿物碳储存.
- MICP的生命周期碳足迹因代谢策略和基质选择而有很大差异.
- 推进MICP作为碳去除技术,需要对微生物生理学,环境相互作用和生命周期排放进行综合评估,以确保环境和经济可行性.
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