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Scalable Unseparated Bioelectrochemical Reactors by Using a Carbon Fiber Brush as Stirrer and Working Electrode

Hengsbach, Jan-Niklas; Engel, Mareike; Cwienczek, Marcel; Stiefelmaier, Judith; Tippkötter, Nils; Holtmann, Dirk 1; Ulber, Roland
1 Institut für Bio- und Lebensmitteltechnik (BLT), Karlsruher Institut für Technologie (KIT)

Abstract:

The concept of energy conversion into platform chemicals using bioelectrochemical systems (BES) has gained increasing attention in recent years, as the technology simultaneously provides an opportunity for sustainable chemical production and tackles the challenge of Power-to-X technologies. There are many approaches to realize the industrial scale of BES. One concept is to equip standard bioreactors with static electrodes. However, large installations resulted in a negative influence on various reactor parameters. In this study, we present a new single-chamber BES based on a stirred tank reactor in which the stirrer was replaced by a carbon fiber brush, performing the functions of the working electrode and the stirrer. The reactor is characterized in abiotic studies and electro-fermentations with Clostridium acetobutylicum. Compared to standard reactors an increase in butanol production of 20.14±3.66 % shows that the new BES can be efficiently used for bioelectrochemical processes.

Zugehörige Institution(en) am KIT Institut für Bio- und Lebensmitteltechnik (BLT)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 02.11.2023
Sprache Englisch
Identifikator ISSN: 2196-0216
KITopen-ID: 1000163704
Erschienen in ChemElectroChem
Verlag John Wiley and Sons
Band 10
Heft 21
Seiten Art.-Nr.: e202300440
Vorab online veröffentlicht am 18.10.2023
Schlagwörter Bioelectrochemistry, Clostridium acetobutylicum, Electro-fermentation, Electron transport, Energy conversion
Nachgewiesen in Web of Science
OpenAlex
Dimensions
Scopus
Globale Ziele für nachhaltige Entwicklung Ziel 9 – Industrie, Innovation und InfrastrukturZiel 12 – Nachhaltiger Konsum und Produktion

Verlagsausgabe §
DOI: 10.5445/IR/1000163704
Veröffentlicht am 02.11.2023
Originalveröffentlichung
DOI: 10.1002/celc.202300440
Scopus
Zitationen: 3
Web of Science
Zitationen: 3
Dimensions
Zitationen: 3
Seitenaufrufe: 84
seit 02.11.2023
Downloads: 48
seit 20.11.2023
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