Publication Details |
| Category | Text Publication |
| Reference Category | Journals |
| DOI | 10.1002/cssc.202002611 |
Licence  |
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| Title (Primary) | Redox potential heterogeneity in fixed bed electrodes leads to microbial stratification and inhomogeneous performance |
| Author | Rodrigo Quejigo, J.; Korth, B.
; Kuchenbuch, A.; Harnisch, F.
|
| Source Titel | ChemSusChem |
| Year | 2021 |
| Department | UMB |
| Volume | 14 |
| Issue | 4 |
| Page From | 1155 |
| Page To | 1165 |
| Language | englisch |
| Topic | T7 Bioeconomy |
| Supplements | https://chemistry-europe.onlinelibrary.wiley.com/action/downloadSupplement?doi=10.1002%2Fcssc.202002611&file=cssc202002611-sup-0001-misc_information.pdf |
| Keywords | electron transfer; electrochemical analysis; cyclic voltammetry; 3D-printing; bed electrode |
| Abstract | Bed electrodes provide high electrode area‐to‐volume ratios representing a promising configuration for transferring bioelectrochemical systems close to industrial applications. Nevertheless, the intrinsic electrical resistance leads to a poor polarization behavior. Therefore, the distribution of Geobacter spp. and their electrochemical performance within exemplary fixed bed electrodes were investigated. A minimally invasive sampling system allowed characterization of granules from different spatial locations of bed electrodes. Cyclic voltammetry of single granules (n=63) demonstrated that the major share of electroactivity (134.3 mA L −1 ) was achieved by ca. 10% of bed volume, specifically that being close to the current collector. Nevertheless, analysis of the microbial community revealed that Geobacter spp. dominated all sampled granules. These findings clearly demonstrate the need for engineered bed electrodes to improve electron exchange between microorganisms and granules. |
| Persistent UFZ Identifier | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=24053 |
| Rodrigo Quejigo, J., Korth, B., Kuchenbuch, A., Harnisch, F. (2021): Redox potential heterogeneity in fixed bed electrodes leads to microbial stratification and inhomogeneous performance ChemSusChem 14 (4), 1155 - 1165 10.1002/cssc.202002611 |
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