Gouveia Bruno, Duarte Elizabeth, Dos Santos Aires, Fernandes Edgar
IN+ Centre for Innovation, Technology and Policy Research, LARSyS, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1, 1049-001 Lisbon, Portugal.
LEAF - Linking Landscape, Environment, Agriculture and Food, Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisbon, Portugal.
Heliyon. 2022 Mar 26;8(3):e09194. doi: 10.1016/j.heliyon.2022.e09194. eCollection 2022 Mar.
The ability of anaerobic digestion to create value from waste gives it an important role in reducing greenhouse gas emissions and in the transition to a circular economy. For a better understanding of the digestion process and in order to reduce the number of time-consuming batch tests, an analytical model was developed to describe the kinetics of biogas production. Assuming that the organic fraction of the substrate has different degradation rates, the whole process was modelled as two groups of 1 order reactions. The model was tested with published data and showed an excellent performance in reproducing the experimental information. Moreover, its kinetic constants provided a useful insight into the internal processes of anaerobic digestion and the substrate characteristics. Given its accuracy in fitting the data, the model can be used as an auxiliary tool to determine the biogas potential, presenting itself as the most complete empirical model currently available.
厌氧消化从废物中创造价值的能力使其在减少温室气体排放和向循环经济转型中发挥重要作用。为了更好地理解消化过程并减少耗时的批次试验次数，开发了一个分析模型来描述沼气生产的动力学。假设底物的有机部分具有不同的降解速率，整个过程被建模为两组一级反应。该模型用已发表的数据进行了测试，在再现实验信息方面表现出色。此外，其动力学常数为厌氧消化的内部过程和底物特性提供了有用的见解。鉴于其在拟合数据方面的准确性，该模型可作为确定沼气潜力的辅助工具，是目前可用的最完整的经验模型。
