Superstructure optimisation of direct air capture integrated with synthetic natural gas production

Meshkat Dolat, Kamran Keynejad, Melis S. Duyar and Michael Short

Applied Energy, 2025, vol. 384, issue C, No S0306261925001436

Abstract: This study evaluates two integrated pathways for synthetic natural gas (SNG) production via direct air capture (DAC) and utilisation: Dual-Function Material (DFM) technology and Temperature-Vacuum Swing Adsorption (TVSA) combined with a Sabatier reactor. DFM technology, which combines CO₂ capture and methanation in a single unit, is compared against the more established TVSA-Sabatier process regarding techno-economic feasibility. Superstructure optimisation is employed to assess the performance of these two pathways across various upstream and downstream operating units and to examine the impact of different design factors on economic outcomes.

Keywords: Superstructure optimisation; Dual function material; Power-to-methane; Direct air capture; Temperature vacuum swing adsorption; Carbon utilisation; Techno economic analysis (search for similar items in EconPapers)
Date: 2025
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DOI: 10.1016/j.apenergy.2025.125413

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