Giuseppe Calabrese
A simulation-based evaluation of a direct air capture system with coupled electrochemical and thermochemical processes.
Rel. Massimo Santarelli. Politecnico di Torino, Corso di laurea magistrale in Ingegneria Energetica E Nucleare, 2025
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Abstract
As the climate change has become more pronounced, the limitations around mitigation strategies such as renewable energy deployment and energy efficiency improvements are becoming more visible. While these approaches are indispensable, they are unlikely to achieve the full-scale decarbonization required to meet global climate targets alone. Consequently, technologies that actively remove carbon dioxide from the atmosphere, known as Negative Emission Technologies (NETs), are gaining recognition as essential components of a comprehensive and across-the-board climate strategy. This study focuses on Direct Air Capture (DAC) technology, one of the NETs. A novel system for CO2 capture from the atmosphere that integrates electrochemical and thermochemical processes is studied.
The system captures CO2 using an aqueous NaOH solution, regenerates the sorbent electrochemically via Na2CO3 electrolysis, and releases CO2 through the thermochemical decomposition of NaHCO3
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