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从CO2中选择性生产黄油酸,并在微生物电合成细胞中将其升级为butanol

Meritxell Romans-Casas¹, Laura Feliu-Paradeda², Michele Tedesco³

¹LEQUiA, Institute of the Environment, University of Girona. Campus Montilivi, Carrer Maria Aurèlia Capmany 69, E-17003, Girona, Spain.

Environmental science and ecotechnology

|August 28, 2023

概括

这项研究优化了微生物电合成 (MES) 以从二氧化碳有效地产生黄油酸,实现了高速率和低能耗. 它还证明了一条将黄油酸升级为butanol的途径.

科学领域:

生物技术是生物技术.
电化学电化学电化学
微生物学微生物学

背景情况:

微生物电合成 (MES) 提供了碳利用,但面临着低价值产品和高能源需求的挑战.
工业采用MES受到经济可行性和能源效率的限制.

研究的目的:

开发一个电效的MES系统,从CO2中生产更高价值的化学品.
优化选择性生产黄油酸及其随后升级为butanol的操作条件.

主要方法:

使用静电操作的MES电池,在输入批次模式下具有低欧米电阻.
操纵CO2和H2的可用性和阴极区条件 (pH2,pH),以控制微生物代谢.
雇佣社区丰富和细胞注射以提高生产率并减少滞后阶段.

主要成果:

通过Megasphaera* sp.的链延长,在14.5 g m-2 d-1 时实现了选择性黄油酸生产 (78%以碳为基础).
通过加索利特注射,通过乳酪酸生产显著减少82%的滞后阶段.
通过改变二氧化碳养并保持高pH2.2,成功触发了溶剂性butanol生产.
获得了 34.6 kWh_el kg-1 的低能耗,用于生产黄油酸.

结论:

优化的 MES 操作使得从 CO2 中节能生产黄油酸成为可能.
开发的系统提供了一个可行的战略,用于将二氧化碳升级为有价值的化学物质,如黄油酸和butanol.
进一步的研究可以集中在提高coulombic效率和扩大过程.

关键词:

生物阴极是一种生物阴极.生物电化学系统生物电化学系统链条的延长链条的延长的部分压力巨类动物群 (Megasphaera) 是一个大类动物群.

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