Combined amperometric/field-effect sensor for the detection of dissolved hydrogen
- Real-time and reliable monitoring of the biogas process is crucial for a stable and efficient operation of biogas production in order to avoid digester breakdowns. The concentration of dissolved hydrogen (H₂) represents one of the key parameters for biogas process control. In this work, a one-chip integrated combined amperometric/field-effect sensor for monitoring the dissolved H₂ concentration has been developed for biogas applications. The combination of two different transducer principles might allow a more accurate and reliable measurement of dissolved H₂ as an early warning indicator of digester failures. The feasibility of the approach has been demonstrated by simultaneous amperometric/field-effect measurements of dissolved H₂ concentrations in electrolyte solutions. Both, the amperometric and the field-effect transducer show a linear response behaviour in the H₂ concentration range from 0.1 to 3% (v/v) with a slope of 198.4 ± 13.7 nA/% (v/v) and 14.9 ± 0.5 mV/% (v/v), respectively.
Author: | Christina Huck, Arshak PoghossianORCiD, Patrick Wagner, Michael Josef SchöningORCiD |
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DOI: | https://doi.org/10.1016/j.snb.2012.10.050 |
ISSN: | 0925-4005 |
Parent Title (English): | Sensors and actuators B: Chemical |
Publisher: | Elsevier |
Place of publication: | Amsterdam |
Document Type: | Article |
Language: | English |
Year of Completion: | 2012 |
Volume: | 187 |
First Page: | 168 |
Last Page: | 173 |
Note: | Part of special issue "Selected Papers from the 14th International Meeting on Chemical Sensors" |
Link: | https://doi.org/10.1016/j.snb.2012.10.050 |
Zugriffsart: | campus |
Institutes: | FH Aachen / Fachbereich Medizintechnik und Technomathematik |
FH Aachen / INB - Institut für Nano- und Biotechnologien | |
collections: | Verlag / Elsevier |