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Title (Primary) Microbial electrochemical sensors for anaerobic digestion process control – performance of electroactive biofilms under real conditions
Author Kretzschmar, J.; Böhme, P.; Liebetrau, J.; Mertig, M.; Harnisch, F.;
Journal Chemical Engineering & Technology
Year 2018
Department UMB;
Volume 41
Issue 4
Language englisch;
POF III (all) R31; T15;
Supplements https://onlinelibrary.wiley.com/action/downloadSupplement?doi=10.1002%2Fceat.201700539&attachmentId=2201855542
Keywords Anaerobic digestion; Biosensor; Electroactive biofilms; Geobacter anodireducens; Microbial electrochemical technologies
UFZ wide themes RU4;
Abstract The autonomous growth of Geobacter sp.‐dominated biofilms on electrodes and their sensitivity on volatile fatty acids (VFAs) allows their application as biosensor. In this study, the implementation of a microbial electrochemical sensor in the anaerobic digestion (AD) process is reported. The amperometric sensor signal follows the acetate concentration profile in the AD process. Yet, the sensor's stability is impaired by the process conditions. Therefore, potential biofilm inhibitors are individually examined, i.e., high salt and NH4+ concentrations as well as fumarate as potential alternative electron acceptor. The results show no influence of high salinity on the signal, whereas ammonia at a concentration ≥ 5 g L−1 NH4+ acts as inhibitor, and fumarate is used as substrate for current generation.
ID 20112
Persistent UFZ Identifier http://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=20112
Kretzschmar, J., Böhme, P., Liebetrau, J., Mertig, M., Harnisch, F. (2018):
Microbial electrochemical sensors for anaerobic digestion process control – performance of electroactive biofilms under real conditions
Chem. Eng. Technol. 41 (4), 687 - 695