Anaerobic digestion modelling: innovative characterization tool and extension to micropollutant fate
Résumé
Advanced dynamic anaerobic digestion models, such as ADM1, requires both detailed organic matter characterisation and intimate knowledge of the involved metabolic pathways. In the current study, a methodology for municipal sludge characterization previously developed is used to describe two key parameters: biodegradability and bioaccessibility of organic matter. The methodology is based on coupling sequential chemical extractions with 3D fluorescence spectroscopy. Experimental data, obtained from two different laboratory scale reactors, were used to validate the model. The proposed approach showed a strong application potential for reactor design and advanced control of anaerobic digestion processes. In order to complete the modified model, the organic micropollutants fate modeling is considered, since their degradation is strongly linked with the organic matter biodegradation, and addition of micropollutants kinetics terms in the overall model is proposed.
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