|Reference : Gas sensor array applied to the monitoring of biogas process|
|Scientific congresses and symposiums : Paper published in a book|
|Life sciences : Multidisciplinary, general & others|
Engineering, computing & technology : Multidisciplinary, general & others
Engineering, computing & technology : Chemical engineering
|Gas sensor array applied to the monitoring of biogas process|
|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 >]|
|Proceedings of the International Symposium on Olfaction and Electronic Nose 2011|
|Internation Symposium on Olfaction and Electronic Nose|
|from 02-05-2011 to 05-05-2011|
|Engineering Conferences International|
|[en] Biogas ; electronic nose ; mahalanobis ; methanation ; gas sensors array|
|[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.
|Surveillance de l'environnement|
|Researchers ; Professionals ; Students|
|File(s) associated to this reference|
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