来自CO2的乳酸:基于生物催化方法的碳捕获和利用策略
Albert Carceller1, Marina Guillén1, Gregorio Álvaro1
1Department of Chemical, Biological and Environmental Engineering, Universitat Autònoma de Barcelona, Bellaterra, Catalonia 08193, Spain.
Environmental science & technology
|December 11, 2023
概括
这项研究展示了一种生物催化系统,将二氧化碳和乙醇转化为乳酸,这是一个关键的碳捕获和利用 (CCU) 战略. 更绿色的方法实现了高产量,并证明了工业废气的可行性.
科学领域:
- 生物技术是生物技术.
- 绿色化学 绿色化学
- 生物催化剂是一种生物催化剂.
背景情况:
- 欧盟的目标是到2050年将二氧化碳排放量减少80%,需要先进的碳捕获和利用 (CCU) 技术.
- 生物催化剂为化学催化剂提供了一个可持续的替代方案,与CCU策略的绿色化学原则保持一致.
研究的目的:
- 研究一种多酶系统,用于将二氧化碳和乙醇转化为乳酸,并实现100%的原子经济.
- 通过反应介质工程和酶比率调整来优化系统的性能.
- 评估该系统在模拟的工业环境中使用高炉废气的适用性.
主要方法:
- 开发一种利用酒精脱酶 (ADH),酸盐脱酶 (PDC) 和乳酸脱酶 (LDH) 的多酶系统.
- 实施辅助因子再生以降低工艺成本.
- 反应条件的优化和用合成工业废气进行测试.
主要成果:
- 使用100%的CO2获得了250μM的最大乳酸度,这代表了这种多酶方法的记录.
- 使用模拟高炉排气的合成气体证明成功生产乳酸 (62μM).
- 证实了该系统对辅因子再生的能力,提高了经济可行性.
结论:
- 开发的多酶系统为二氧化碳利用和乳酸生产提供了一个有希望的绿色途径.
- 该系统在模拟的工业条件下表现出的性能凸显了其在真实世界CCU应用中的潜力.
- 这种生物催化方法通过有效的碳捕获和利用,有助于实现欧盟的低碳经济目标.
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