Ali et al. (2025): State-of-the-Art Membrane Solutions for Direct Air Carbon Capture (DACC): An Overview on the Current Status and Future Directions
Syed Awais Ali, Syed Nasir Shah, Malik Abdul Karim, Syed Abdul Moiz Hashmi, Farooq Ahmad, Khairul Habib, Abdul Sami and Muhammad Abdullah, IN: ACS Energy & Fuels, https.://doi.org/10.1021/acs.energyfuels.5c00793
he UK Parliament’s climate change committee suggests that direct air carbon capture (DACC) could remove 1 billion tons of CO₂ globally. The same report raises concerns over the inflated costs of CO₂ removal associated with DACC (£250–400/ton of CO₂). Indeed, the highly diluted concentration of CO₂ in air (0.04%) imposes a high energy penalty and increases processing costs. The current state-of-the-art DACC involves an adsorption process that uses an amine adsorbent to remove CO₂ from the air. The literature review reveals very few investigations reported on membranes for DACC until recently. Theoretically, membrane-based CO₂ removal presents several advantages over conventional sorbent methods, including higher energy efficiency and lower operational costs.