In the context of the current global climate emergency, characterised by record levels of CO₂ emissions recorded in 2024, the development of Carbon Capture, Utilisation, and Storage (CCUS) technologies has become a technical and economic imperative. This thesis analyses an innovative process architecture based on the principle of progressive enrichment of the gas phase through an iterative cycle of physical absorption in pure water. Developed in collaboration with Hydrogen Valley (Denmark), the research aims to validate a ‘zero-chemical’ technology capable of overcoming the degradation and toxicity limitations of conventional amine-based (MEA) systems. The research focused on modelling and optimising the process in the Aspen Plus environment, with the primary objective of identifying an optimal configuration in terms of specific energy consumption.