 Aspen Plus can improve the accuracy of predictions regarding the chemical species composition in the output streams of anaerobic digestion processes. It provides access to a large library of thermodynamic and transport properties, allowing for more accurate simulations than traditional lumped models. A process simulation model was created to characterize the technical feasibility of anaerobic digestate stabilization using biomass ash-based treatment and biogas upredation with the synthesis of ammonium carbonate. The model requires further development to ensure standards are met in all output streams of stabilized anaerobic digestate, biomethane, and isolated added value chemical fertilizers. This article was authored by Alejandro Moore Abelenda, Abtikhani Ali, Kirk T. Semple, and others.