Publication Details |
| Category | Text Publication |
| Reference Category | Journals |
| DOI | 10.1016/j.jcou.2025.103136 |
Licence  |
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| Title (Primary) | Evaluation of single chamber electrochemical reduction of CO2 to formate for application under biocompatible conditions |
| Author | Ul, Z.; Sulonen, M.; Haus, P.; Izadi, P.
; Baeza, J.A.; Harnisch, F.
; Guisasola, A. |
| Source Titel | Journal of CO2 Utilization |
| Year | 2025 |
| Department | MIBITECH |
| Volume | 97 |
| Page From | art. 103136 |
| Language | englisch |
| Topic | T7 Bioeconomy |
| Supplements | Supplement 1 |
| Keywords | Biocompatible; CO2 reduction; Electrocatalysis; Indium; Single chamber |
| Abstract | The electrochemical CO2 reduction reaction (eCO2RR) facilitates high rates and yields for the selective production of formate, a quintessential C1-compound that can serve as a valuable carbon and energy source for biosynthesis. The use of double-chamber (DC) electrochemical cells with membranes is deemed essential to avoid mixing of electrochemical products (i.e. anodic oxygen and cathodic formate) and thus cross-reactions that lower yields, Faradaic efficiency (FE) and effective rate. However, single-chamber (SC) setups for eCO2RR can be more suitable to combine with bioprocesses. This work comprehensively evaluates, using different experimental set-ups, the conditions under which SC operation can obtain results comparable to DC systems. At a 50 mL scale, under biocompatible conditions, formate production in the SC setup achieved a 14 % reduction in the production rate (146 mg L−1 h−1 for SC and 170 mg L−1 h−1 for DC) and a 15 % decrease in FE (72.2 % in SC and 84.7 % in DC). The highest formate concentration produced in 24 h SC experiments was 1.8 g·L−1 with FE of 41 %, a concentration appropriate for fermentation processes. The SC operation of eCO2RR to formate without a membrane could reduce energy losses and capital costs, although at the cost of an expected reduction in rate and FE. |
| Ul, Z., Sulonen, M., Haus, P., Izadi, P., Baeza, J.A., Harnisch, F., Guisasola, A. (2025): Evaluation of single chamber electrochemical reduction of CO2 to formate for application under biocompatible conditions J. CO2 Util. 97 , art. 103136 10.1016/j.jcou.2025.103136 |
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