Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/78890
Título: | Modelling anaerobic digestion of sewage sludge: mechanistic models vs machine learning |
Autor(es): | Duarte, Maria Salomé Lira Martins, Gilberto Oliveira, João Vítor Oliveira, P. Silva, Sérgio Alves Novais, Paulo Pereira, M. A. Alves, M. M. |
Palavras-chave: | Anaerobic digestion Sewage sludge Mathematical modelling |
Data: | 22-Jun-2022 |
Editora: | IWA Publishing |
Citação: | Duarte, Maria Salomé; Martins, Gilberto; Oliveira, João V.; Oliveira, Pedro; Silva, Sérgio A.; Novais, Paulo; Pereira, M. Alcina; Alves, M. Madalena, Modelling anaerobic digestion of sewage sludge: mechanistic models vs machine learning. 17th World Conference on Anaerobic Digestion. Ann Arbor, USA, June 17-22, 2022. |
Resumo(s): | Anaerobic digestion processes are one of the technologies most used by wastewater treatment plants (WWTPs) to stabilize and decrease the organic content of sludge. This process decreases the costs of disposal while increasing the energetic efficiency of WWTPs. In order to optimize this process, three model approaches were implemented. First, we calibrated and validated the anaerobic digestion model no.1 (ADM1) using data from an anaerobic lab digester treating sewage sludge (Phases I, II, III), and further receiving glycerol pulses (Phases IV, V). Then, to optimize the calibration and parameter estimation, an iterative procedure was applied by minimizing the root mean square error (RMSE). The second approach consisted of applying a machine learning (ML) model to the biogas and methane produced. The results showed that the ADM1 model adjusted well to the experimental results, especially to biogas, methane and pH. The optimization routine was useful to identify the most sensitive parameters, improving model calibration. Overall, the ML approach was more reliable to predict anaerobic reactors performance but did not respond so well to process perturbations (glycerol pulses). |
Tipo: | Artigo em ata de conferência |
URI: | https://hdl.handle.net/1822/78890 |
Versão da editora: | https://www.iwa-ad17.org/ |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CEB - Artigos em Livros de Atas / Papers in Proceedings |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
document_55639_1.pdf | 197,49 kB | Adobe PDF | Ver/Abrir |