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Article Abstract
The valorization of CO to chemicals beyond C products is receiving significant interest; however, the direct electrosynthesis of C molecules (n > 4) remains a challenge. Here, we present a two-step abiotic-biotic system for upgrading CO into the biopolymer, poly(3-hydroxybutyrate). In the electrolysis system, CO is converted into C oxygenates using a Cu-Ag tandem electrocatalyst. The electrolysis process generates a liquid stream containing ~ 200 mM acetate in a bio-compatible electrolyte. This electrosynthesized acetate is then fed to a bioreactor, where the substrate is upgraded by to biopolymer with a maximum rate of 32 ± 3.5 mg L h. We further demonstrate the purification of the resulting biopolymer into a powder. The high productivity of the abiotic-biotic system demonstrates its feasibility for sustainable chemical manufacturing.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC12403087 | PMC |
| http://dx.doi.org/10.1073/pnas.2512565122 | DOI Listing |
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