Anaerobic modeling for improving synergy and robustness of a manure co-digestion process

D. M. F. Lima, J. A. D. Rodrigues, Kanokwan Boe, Merlin Alvarado-Morales, L. Ellegård, Irini Angelidaki

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Biogas production is becoming increasingly important in the environmental area because, besides treating wastewaters, it also generates energy. Co-digestion has become more and more powerful since it is possible, with the use of abundant and cheap substrates, to dilute the inhibitory effects of various other substrates, making the process of anaerobic digestion more efficient and stable. Biogas process modelling describes the kinetics and stoichiometry of different steps in the anaerobic digestion process. This mathematical modelling provides an understanding of the processes and interactions occurring inside the biogas system. The present work investigated the interactions between different simple co-substrates (carbohydrate, lipid and protein) and real co-substrates (corn silage, fodder beet, grass and wheat straw) under co-digestion with manure, in order to verify synergetic effects. Subsequently, some experiments were reproduced, in order to evaluate the synergy obtained in the previous simulation and validate the model.
Original languageEnglish
JournalBrazilian Journal of Chemical Engineering
Issue number4
Pages (from-to)871-883
Number of pages13
Publication statusPublished - 2016


  • Methane
  • Anaerobic digestion
  • Modelling
  • Co-digestion
  • Manure


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