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Selecting the most relevant variables for anaerobic digestion imbalances : Two case studies

In this study, a wrapper approach was applied to objectively select the most important variables related to two different anaerobic digestion imbalances, acidogenic states and foaming. This feature selection method, implemented in artificial neural networks (ANN), was performed using input and output data from a fully instrumented pilot plant (1 m 3 upflow fixed bed digester). Results for acidogenic states showed that pH, volatile fatty acids, and inflow rate were the most relevant variables. Results for foaming showed that inflow rate and total organic carbon were among the relevant variables, both of which were related to the feed loading of the digester. Because there is not a complete agreement on the causes of foaming, these results highlight the role of digester feeding patterns in the development of foaming

Water Environment Federation

Author: Dalmau Solé, Jordi
Comas Matas, Joaquim
Rodríguez-Roda Layret, Ignasi
Latrille, Eric
Steyer, Jean Philippe
Abstract: In this study, a wrapper approach was applied to objectively select the most important variables related to two different anaerobic digestion imbalances, acidogenic states and foaming. This feature selection method, implemented in artificial neural networks (ANN), was performed using input and output data from a fully instrumented pilot plant (1 m 3 upflow fixed bed digester). Results for acidogenic states showed that pH, volatile fatty acids, and inflow rate were the most relevant variables. Results for foaming showed that inflow rate and total organic carbon were among the relevant variables, both of which were related to the feed loading of the digester. Because there is not a complete agreement on the causes of foaming, these results highlight the role of digester feeding patterns in the development of foaming
Document access: http://hdl.handle.net/2072/239930
Language: eng
Publisher: Water Environment Federation
Rights: Tots els drets reservats
Subject: Digestió anaeròbia
Anaerobic digestion
Title: Selecting the most relevant variables for anaerobic digestion imbalances : Two case studies
Type: info:eu-repo/semantics/article
Repository: Recercat

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