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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 Research, 2010, vol. 82, p. 492-498

Water Environment Federation

Author: Dalmau Solé, Jordi
Comas Matas, Joaquim
Rodríguez-Roda Layret, Ignasi
Latrille, Eric
Steyer, Jean Philippe
Date: 2010 June 1
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
Format: application/pdf
ISSN: 1061-4303 (versió paper)
1554-7531 (versió electrònica)
1061-4303
Document access: http://hdl.handle.net/10256/9438
Language: eng
Publisher: Water Environment Federation
Collection: Reproducció digital del document publicat a: http://dx.doi.org/10.2175/106143009X12529484815359
Articles publicats (D-EQATA)
Is part of: © Water Environment Research, 2010, vol. 82, p. 492-498
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: DUGiDocs

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