Scalable Electro-Biosynthesis of Ectoine from Greenhouse Gases.

Autor: Guo S; Xi'an Key Laboratory of C1 Compound Bioconversion Technology, School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, 710049, P. R. China., Li C; School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, 611731, P. R. China., Su Y; Xi'an Key Laboratory of C1 Compound Bioconversion Technology, School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, 710049, P. R. China., Huang X; Xi'an Key Laboratory of C1 Compound Bioconversion Technology, School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, 710049, P. R. China., Zhang C; Xi'an Key Laboratory of C1 Compound Bioconversion Technology, School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, 710049, P. R. China., Dai Y; School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, 611731, P. R. China., Ji Y; School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, 611731, P. R. China., Fu R; Shaanxi Key Laboratory of Degradable Biomedical Materials, School of Chemical Engineering, Northwest University, Xi'an, 710069, China., Zheng T; School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, 611731, P. R. China., Fei Q; Xi'an Key Laboratory of C1 Compound Bioconversion Technology, School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, 710049, P. R. China., Fan D; Shaanxi Key Laboratory of Degradable Biomedical Materials, School of Chemical Engineering, Northwest University, Xi'an, 710069, China., Xia C; School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, 611731, P. R. China.
Jazyk: angličtina
Zdroj: Angewandte Chemie (International ed. in English) [Angew Chem Int Ed Engl] 2024 Oct 15, pp. e202415445. Date of Electronic Publication: 2024 Oct 15.
DOI: 10.1002/anie.202415445
Abstrakt: Converting greenhouse gases into valuable products has become a promising approach for achieving a carbon-neutral economy and sustainable development. However, the conversion efficiency depends on the energy yield of the substrate. In this study, we developed an electro-biocatalytic system by integrating electrochemical and microbial processes to upcycle CO 2 into a valuable product (ectoine) using renewable energy. This system initiates the electrocatalytic reduction of CO 2 to methane, an energy-dense molecule, which then serves as an electrofuel to energize the growth of an engineered methanotrophic cell factory for ectoine biosynthesis. The scalability of this system was demonstrated using an array of ten 25 cm 2 electrochemical cells equipped with a high-performance carbon-supported isolated copper catalyst. The system consistently generated methane at the cathode under a total partial current of approximately -37 A (~175 mmol CH4  h -1 ) and O 2 at the anode under a total partial current of approximately 62 A (~583 mmol O2  h -1 ). This output met the requirements of a 3-L bioreactor, even at maximum CH 4 and O 2 consumption, resulting in the high-yield conversion of CO 2 to ectoine (1146.9 mg L -1 ). This work underscores the potential of electrifying the biosynthesis of valuable products from CO 2 , providing a sustainable avenue for biomanufacturing and energy storage.
(© 2024 Wiley-VCH GmbH.)
Databáze: MEDLINE
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