Journal
BIOCHEMICAL ENGINEERING JOURNAL
Volume 194, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.bej.2023.108886
Keywords
ADM1; Parameters estimation; Simulation; Variable and constant stoichiometry; Volatile fatty acids
Ask authors/readers for more resources
The study modified the ADM1 to simulate VFA production from municipal sludge. The model was calibrated using experimental data and showed good accuracy in simulating acetic, propionic, and butyric acids. However, it underestimated acetic acid production in the validation using an independent data set. The results extend the applicability of the ADM1 in simulating VFA during anaerobic fermentation.
The present study modified the anaerobic digestion model No.1 (ADM1) to simulate biological volatile fatty acids (VFA) production from municipal sludge. A variable and constant stoichiometric approach was used to modify the ADM1. The model was implemented in the AQUASIM 2.0 modeling platform and calibrated with experi-mental data from the bench-scale semi-continuous flow acid fermenters to assess the model's performance in simulating the VFA generation under different operating conditions. After parameter estimation, the modified ADM1 simulated experimental results of acetic, propionic, and butyric acids with reasonable accuracy and goodness of fit values ranging from 0.90 to 0.99. The model validation using an independent data set from the calibration data successfully simulated propionic (goodness of fit of 0.89) and butyric acids (goodness of fit of 0.88) but underestimated acetic acid production (goodness of fit of 0.73). The presented results extend the applicability of the ADM1 to simulate VFA during anaerobic fermentation.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available