Systematic simplification of the Anaerobic Digestion Model No. 1 (ADM1) – Laboratory experiments and model application
| Autor: | Christian Krebs, Jan Liebetrau, Sören Weinrich, Thomas J. Schmidt, Michael Nelles, Eric Mauky |
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| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
Environmental Engineering Silage Bioengineering 010501 environmental sciences Bacterial growth 01 natural sciences Hydrolysis Bioreactors Biogas 010608 biotechnology Animals Anaerobiosis Process simulation Waste Management and Disposal 0105 earth and related environmental sciences Renewable Energy Sustainability and the Environment General Medicine Pulp and paper industry Manure Anaerobic digestion Biofuels Environmental science Cattle Stillage Laboratories Methane |
| Zdroj: | Bioresource Technology. 333:125104 |
| ISSN: | 0960-8524 |
| Popis: | Due to a limited number of available measurements on agricultural biogas plants, established process models, such as the Anaerobic Digestion Model No. 1 (ADM1), are rarely applied in practise. To provide a reliable basis for model-based monitoring and control, different model simplifications of the ADM1 were implemented for process simulation of semi-continuous anaerobic digestion experiments using agricultural substrates (maize silage, sugar beet silage, rye grain and cattle manure) and industrial residues (grain stillage). Individual model structures enable a close depiction of biogas production rates and characteristic intermediates (ammonium nitrogen, propionic and acetic acid) with equal accuracy as the original ADM1. The impact of different objective functions and standard parameter values on parameter estimates of first-order hydrolysis constants and microbial growth rates were evaluated. Due to the small number of required model parameters and suitable system characteristics, simplified model structures show clear advantages for practical application on agricultural biogas plants. |
| Databáze: | OpenAIRE |
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