Modeling of hydrogen production from biomass bio-digestion under Aspen Plus

This project evaluates how to model the thermodynamics and processes for making hydrogen from biogas that comes from anaerobic digestion of biomass. The study uses Aspen Plus to simulate a system that combines an anaerobic digester—fed with 0.33 L of cow manure per day—with six different methane‑reforming routes for hydrogen production. The approach builds detailed thermodynamic models of three stages: biogas generation, biogas cleaning, and the reforming reactions. By running these models, the study pinpoints which chemical pathway works best. Performance is compared using three main metrics: hydrogen yield, overall thermal‑energy efficiency, and carbon‑dioxide emissions. The simulation of the anaerobic digestion plus steam‑reforming setup (called DA‑Steam Reforming) gives the best

results. It produces about 5.71 L of hydrogen per day, reaches a thermal‑energy efficiency of 82.72 %, and has a carbon footprint of 12.83 kg CO₂ per kilogram of hydrogen. The framework offers step‑by‑step guidance for designing, simulating, and optimizing bio‑hydrogen production systems. It is intended to help academic work in green chemical engineering and renewable‑energy integration.

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