Journal article

Publication year: 2021

Journal: Bioresource Technology

Volume number: 333

ISSN: 0960-8524

eISSN: 1873-2976

DOI Link: https://doi.org/10.1016/j.biortech.2021.125104

Publisher: Elsevier

Abstract: 
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.

Harvard Citation style: Weinrich, S., Mauky, E., Schmidt, T., Krebs, C., Liebetrau, J. and Nelles, M. (2021) Systematic simplification of the Anaerobic Digestion Model No. 1 (ADM1)-Laboratory experiments and model application, Bioresource Technology, 333, Article 125104. https://doi.org/10.1016/j.biortech.2021.125104

APA Citation style: Weinrich, S., Mauky, E., Schmidt, T., Krebs, C., Liebetrau, J., & Nelles, M. (2021). Systematic simplification of the Anaerobic Digestion Model No. 1 (ADM1)-Laboratory experiments and model application. Bioresource Technology. 333, Article 125104. https://doi.org/10.1016/j.biortech.2021.125104