ORBi: Adam Gilles - Gas sensor array applied to the monitoring of biogas process

Reference : Gas sensor array applied to the monitoring of biogas process


	Document type :	Scientific congresses and symposiums : Paper published in a book
	Discipline(s) :	Life sciences : Multidisciplinary, general & others Engineering, computing & technology : Multidisciplinary, general & others Engineering, computing & technology : Chemical engineering
	To cite this reference:	http://hdl.handle.net/2268/93060

Title :	Gas sensor array applied to the monitoring of biogas process
Language :	English
Author, co-author :	Adam, Gilles [Université de Liège - ULg > Département des sciences et gestion de l'environnement > Surveillance de l'environnement >]
	Lemaigre, Sébastien [Centre de Recherche Public Gabirel Lippmann > EVA Environment and Agro-biotechnologies > > >]
	Romain, Anne-Claude [Université de Liège - ULg > Département des sciences et gestion de l'environnement > Département des sciences et gestion de l'environnement >]
	Delfosse, Philippe [Centre de Recherche Public Gabriel Lippmann > EVA Environment and Agro-biotechnologies > > >]
	Nicolas, Jacques [Université de Liège - ULg > Département des sciences et gestion de l'environnement > Surveillance de l'environnement >]
Publication date :	May-2011
Main document title :	Proceedings of the International Symposium on Olfaction and Electronic Nose 2011
Editor :	Gouma, Perena
Publisher :	ECI
Peer reviewed :	Yes
On invitation :	No
Audience :	International
City :	New York
Country :	USA
Event name :	Internation Symposium on Olfaction and Electronic Nose
Event date :	from 02-05-2011 to 05-05-2011
Event organizer :	Engineering Conferences International
Event place (city) :	New York
Event country :	USA
Keywords :	[en] Biogas ; electronic nose ; mahalanobis ; methanation ; gas sensors array
Abstract :	[en] There is a lack of simple online monitoring system to control the performances of biogas reactors. The electronic nose technology appears to be an adapted device to deliver fast information about process disturbances in anaerobic reactors as it is adequate for online monitoring. In this study, twelve anaerobic mini-reactors were supervised with a home-made e-nose to observe process reaction in relation to organic overloads events. Usually, to avoid overload situations, on farms reactors are not fed at maximum load capacity, resulting in non optimized biogas production. The objective of the experiment was to determine if the gas sensors array feature can be related to the process state and if an indirect state variable, giving early warning of process faults, can be derived from the e-nose response. The results demonstrated that focusing on gas phase of anaerobic reactors with a simple device composed of an array of non-specific gas sensors helped in the warning of disorders of the anaerobic digestion process. Mahalanobis distance from a cautious feeding group (group of observations indicating a good process) can be used as an indirect variable to evaluate the intensity of the state disorder. Euclidean distance has been also calculated but it was less informative than the Mahalanobis distance.
Research units :	Surveillance de l'environnement
Name of the research project :	Optibiogaz
Target :	Researchers ; Professionals ; Students
Permalink :	http://hdl.handle.net/2268/93060

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