期刊
BIORESOURCE TECHNOLOGY
卷 276, 期 -, 页码 253-259出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2018.12.064
关键词
Anaerobic digestion; Trace elements; Complexation; Mathematical modeling; ADM1
资金
- Marie Sklodowska-Curie European Joint Doctorate-ABWET - Horizon 2020 program [643071]
- COST Action (European Network on Ecological Roles of Trace Metals in Anaerobic Biotechnologies) [1302]
- Marie Curie Actions (MSCA) [643071] Funding Source: Marie Curie Actions (MSCA)
In this study, a new model based on anaerobic digestion model no. 1 (ADM1) approach has been proposed to simulate trace elements (TEs) complexation, precipitation and their effect on the anaerobic batch methane production. TEs complexation reactions with VFAs and EDTA have been incorporated in an extended ADM1 model which considers TE precipitation/dissolution reactions as well as biodegradation processes. The kinetic model tracks the dynamics of 90 state variables which constitute the components of the proposed anaerobic digestion (AD) model. The incorporation of the complexation reactions required the definition of new inorganic components (EDTA species) and new complexation process rates in the ADM1 framework. The charge balance was modified accordingly to consider the effects of the additional components. The new model is able to predict: a) the effect of TE-EDTA/VFA complexation on methane production, and b) the effect of the initial calcium and magnesium concentrations on process performance.
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