Journal
BIORESOURCE TECHNOLOGY
Volume 243, Issue -, Pages 30-36Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2017.06.073
Keywords
Microbial electrosynthesis; Acinetobacter baylyi ADP1; Carbon neutral; Oleochemicals; Carbon dioxide fixation
Funding
- Academy of Finland [286450]
- Novo Nordisk Foundation
- Tampere University of Technology Graduate School
- Emil Aaltonen Foundation
- Academy of Finland (AKA) [286450, 286450] Funding Source: Academy of Finland (AKA)
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Microbial electrosynthesis (MES) is a promising technology for the reduction of carbon dioxide into value-added multicarbon molecules. In order to broaden the product profile of MES processes, we developed a two-stage process for microbial conversion of carbon dioxide and electricity into long chain alkyl esters. In the first stage, the carbon dioxide is reduced to organic compounds, mainly acetate, in a MES process by Sporomusa ovata. In the second stage, the liquid end-products of the MES process are converted to the final product by a second microorganism, Acinetobacter baylyi in an aerobic bioprocess. In this proof-of-principle study, we demonstrate for the first time the bacterial production of long alkyl esters (wax esters) from carbon dioxide and electricity as the sole sources of carbon and energy. The process holds potential for the efficient production of carbon-neutral chemicals or biofuels. (C) 2017 Elsevier Ltd. All rights reserved.
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