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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/15844

Title: Combined amperometric/field-effect sensor for the detection of dissolved hydrogen
Authors: HUCK, Christina
Poghossian, A.
WAGNER, Patrick
Schoening, M. J.
Issue Date: 2013
Publisher: ELSEVIER SCIENCE SA
Citation: SENSORS AND ACTUATORS B-CHEMICAL, 187, p. 168-173
Abstract: 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 (H-2) 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 H-2 concentration has been developed for biogas applications. The combination of two different transducer principles might allow a more accurate and reliable measurement of dissolved H-2 as an early warning indicator of digester failures. The feasibility of the approach has been demonstrated by simultaneous amperometric/fieldeffect measurements of dissolved H-2 concentrations in electrolyte solutions. Both, the amperometric and the field-effect transducer show a linear response behaviour in the H-2 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. (C) 2012 Elsevier B. V. All rights reserved.
Notes: [Huck, C.; Poghossian, A.; Schoening, M. J.] Aachen Univ Appl Sci, Inst Nano & Biotechnol INB, D-52428 Julich, Germany. [Huck, C.; Poghossian, A.; Schoening, M. J.] Forschungszentrum Julich, Peter Grunberg Inst PGI 8, D-52525 Julich, Germany. [Wagner, P.] Hasselt Univ, Inst Mat Res IMO, B-3590 Diepenbeek, Belgium. schoening@fh-aachen.de
URI: http://hdl.handle.net/1942/15844
DOI: 10.1016/j.snb.2012.10.050
ISI #: 000324298300027
ISSN: 0925-4005
Category: A1
Type: Journal Contribution
Validation: ecoom, 2014
Appears in Collections: Research publications

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