Biochemical Conversion Department, Deutsches Biomasseforschungszentrum gemeinnützige GmbH, Torgauer Straße 116, 04347 Leipzig, Germany.
Biochemical Conversion Department, Deutsches Biomasseforschungszentrum gemeinnützige GmbH, Torgauer Straße 116, 04347 Leipzig, Germany; Faculty of Agricultural and Environmental Sciences, Chair of Waste and Resource Management, University of Rostock, Justus-von-Liebig-Weg 6, 18059 Rostock, Germany.
Bioresour Technol. 2021 Aug;333:125124. doi: 10.1016/j.biortech.2021.125124. Epub 2021 Apr 6.
Rigorous process models provide a reliable basis for model-based monitoring and control of anaerobic digestion plants. Due to the complex model structure and non-linear system characteristics, the established Anaerobic Digestion Model No. 1 (ADM1) is rarely applied in industrial plant operation. The present investigation proposes a systematic procedure for successive model simplification and presents the description of five model variants of a mass-based ADM1. Individual model structures greatly differ in their number of implemented process phases, characteristic components and required parameters. Simplified model variants combine nutrient degradation and biogas formation based on first-order sum reactions, whereas complex model structures describe individual degradation pathways and intermediates during acido- and acetogenesis. Characteristic features of the derived model structures as well as the stoichiometric methane potentials and microbial biomass yields of the underlying degradation pathways of individual model variations are evaluated and discussed in detail.
严格的过程模型为基于模型的厌氧消化厂监测和控制提供了可靠的基础。由于模型结构复杂和系统非线性的特点，建立的 Anaerobic Digestion Model No. 1 (ADM1) 很少应用于工业工厂的运行。本研究提出了一种系统的模型简化方法，并描述了基于质量的 ADM1 的五个模型变体。各个模型结构在实施的过程阶段数量、特征组分和所需参数方面有很大的不同。简化的模型变体将营养物质的降解和沼气的形成基于一级总和反应来组合，而复杂的模型结构则在产酸和产乙酸阶段描述了单个降解途径和中间产物。详细评估和讨论了所得到的模型结构的特征以及各个模型变体的基础降解途径的化学计量甲烷潜能和微生物生物质产率。
