微生物电化学刺激法从乙醇和二氧化碳生产己酸。
Microbial electrochemical stimulation of caproate production from ethanol and carbon dioxide.
机构信息
Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China.
Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China.
出版信息
Bioresour Technol. 2020 Jan;295:122266. doi: 10.1016/j.biortech.2019.122266. Epub 2019 Oct 15.
The production of value added chemicals from CO is of critical importance for the practical application of microbial electrosynthesis (MES). Here, a binary electron donor (ED) design (using electrode and ethanol) was introduced to provide an efficient caproate production with the bioconversion of both CO and ethanol. A maximum caproate production rate of 2.41 ± 0.69 g L d, and a final concentration of 7.66 ± 1.38 g L was achieved. Caproate production selectivity based on the substrate increased to 91.47 ± 0.58% (Binary EDs) from 32.22 ± 32.58% (open circuit Electrode ED). An observed amount of 23.43 ± 0.69% of carbon within the final binary ED products originated from the CO. This work proves for the first time the potential of caproate production from CO utilization and ethanol upgrading using solid electrodes to regulate the chain elongation process.
从 CO 生产增值化学品对于微生物电合成（MES）的实际应用至关重要。在这里，引入了二元电子供体（ED）设计（使用电极和乙醇），以通过 CO 和乙醇的生物转化提供高效的己酸生产。实现了 2.41 ± 0.69 g L d 的最大己酸生产速率和 7.66 ± 1.38 g L 的最终浓度。基于底物的己酸生产选择性从 32.22 ± 32.58%（开路电极 ED）增加到 91.47 ± 0.58%（二元 EDs）。最终二元 ED 产物中观察到的 23.43 ± 0.69%的碳源自 CO。这项工作首次证明了使用固体电极从 CO 利用和乙醇升级生产己酸的潜力，以调节链延长过程。
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