Multi-Objective Optimization of a Pressure-Temperature Swing Adsorption Process for Biogas Upgrading

Biomethane has been proven to be a valuable alternative to replace fossil fuels. In order to reduce the energetic cost of production, biogas upgrading technologies have to be improved. In this contribution, a temperature/pressure swing adsorption process is proposed to remove CO2from the biogas flow, exploiting a non-conventional material and a suitable adsorption cycle. In such processes, the optimization is a particularly challenging task as it typically involves conflicting objectives, such as energy efficiency and productivity, and non-linear constraints, which enforce the separation targets.