A Microbial Biosensor Platform for Inline Quantification of Acetate in Anaerobic Digestion: Potential and Challenges

Real‐time measurement of volatile fatty acids (VFA) in anaerobic digestion (AD) is crucial for process monitoring and management. It is essential for establishing demand‐driven biogas production, however, to date it is not commercially available. A novel microbial electrochemical sensor for inline m...

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Bibliographic Details
Published in:Chemical engineering & technology 2016-04, Vol.39 (4), p.637-642
Main Authors: Kretzschmar, Jörg, Rosa, Luis F. M., Zosel, Jens, Mertig, Michael, Liebetrau, Jan, Harnisch, Falk
Format: Article
Language:English
Subjects:
Acetates
Anaerobic digestion
Bioelectrochemistry
Biogas
Biosensors
Electroanalysis
Fatty acids
Management
Microorganisms
Sensors
Volatile fatty acids
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Summary:Real‐time measurement of volatile fatty acids (VFA) in anaerobic digestion (AD) is crucial for process monitoring and management. It is essential for establishing demand‐driven biogas production, however, to date it is not commercially available. A novel microbial electrochemical sensor for inline measurement of acetate and other VFA in AD is proposed. The measurement range as well as the measurement resolution and dynamic behavior of the biosensor were investigated under flow conditions. For application in AD the achieved measurement range is still too low, therefore, measures to improve it as well as further application properties of the sensor are discussed. A microbial electrochemical sensor for quantification of volatile fatty acids within anaerobic digestion and other biotechnological applications is proposed. It provides inline data for process control and management, especially allowing automation. Particularly in the case of anaerobic digestion for biogas and electric energy generation, this sensor offers an excellent application potential.
ISSN:0930-7516
1521-4125
DOI:10.1002/ceat.201500406