Co-gasification of biomass and plastic waste for green and blue hydrogen Production: Novel process development, economic, exergy, advanced exergy, and exergoeconomics analysis

This project framework lets students evaluate both the thermodynamics and the economics of a co‑gasification process that turns biomass and plastic waste into green and blue hydrogen. Using Aspen Plus, the model combines a waste‑to‑energy gasifier with an alkaline electrolysis cell (AEC) that runs on excess electricity produced by the gasifier. Students first develop complete mass and energy balances. Then they perform exergy, advanced exergy, and exergo‑economic analyses. The thermodynamic study pinpoints where most exergy is destroyed, focusing on the gasifier and the steam turbine. Economic feasibility is judged by key performance indicators such as the internal rate of return (IRR) and the unit cost of hydrogen. The framework assumes

a processing capacity of 20 t/h and helps evaluate both the power generated and the amount of hydrogen produced by electrolysis. By following these steps, M.Tech candidates can see how thermodynamic efficiency and capital cost trade off in waste‑to‑hydrogen systems, giving them a solid base for optimizing processes and assessing sustainability in green chemical engineering.

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