Journal
BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING
Volume 33, Issue 4, Pages 871-883Publisher
BRAZILIAN SOC CHEMICAL ENG
DOI: 10.1590/0104-6632.20160334s20150314
Keywords
Methane; Anaerobic digestion; Modelling; Co-digestion; Manure
Categories
Funding
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [10/19.315-3 e 13/22.659-4]
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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.
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