TY  - JOUR
A1  - Stöckl, Markus
A1  - Harms, Svenja
A1  - Dinges, Ida
A1  - Dimitrova, Steliyana
A1  - Holtmann, Dirk
T1  - From CO₂ to bioplastic – coupling the electrochemical CO₂ reduction with a microbial product generation by drop‐in electrolysis
T2  - ChemSusChem
N2  - CO2 has been electrochemically reduced to the intermediate formate, which was subsequently used as sole substrate for the production of the polymer polyhydroxybutyrate (PHB) by the microorganism Cupriavidus necator. Faradaic efficiencies (FE) up to 54 % have been reached with Sn‐based gas‐diffusion electrodes in physiological electrolyte. The formate containing electrolyte can be used directly as drop‐in solution in the following biological polymer production by resting cells. 56 mg PHB L−1 and a ratio of 34 % PHB per cell dry weight were achieved. The calculated overall FE for the process was as high as 4 %. The direct use of the electrolyte as drop‐in media in the bioconversion enables simplified processes with a minimum of intermediate purification effort. Thus, an optimal coupling between electrochemical and biotechnological processes can be realized.
KW  - electrochemical CO2 reduction
KW  - formate
KW  - microbial electrosynthesis
KW  - cupriavidus necator
KW  - polyhydroxy
Y1  - 2020
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/57039
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-570390
SN  - 1864-564X
VL  - 13
IS  - 16
SP  - 4086
EP  - 4093
PB  - Wiley-VCH
CY  - Weinheim
ER  -