"This review provides an extensive evaluation of recent advances in multiscale models used for the theoretical physical descriptions of #DirectAirCapture."
🧵 1/8
"Reviewed (CO2 mass) transfer works span from the ab initio density functional theory calculation relationships to mesoscale Monte Carlo, molecular dynamics simulations & micro-kinetics, adsorption/desorption, & most commonly-investigated specific macroscale concept." #DAC 2/8
The modelled #DAC processes properties reported in the literature have been compared by the authors of this review paper, which allowed them "to identify the most effective sorbents." 3/8
This paper found that "Amine functionalized metal-organic frameworks exhibit low energy requirements, the lowest reported was 1000 kWh tCO2−1, while the lowest published cost was 60 $ tCO2−1." #DAC 4/8
Researchers also figured out that "the market demand for CO2 is expected to exponentially rise up to 6.1 Gt in 2050, while the cost of implementing #DAC technologies is predicted to be reduced under 125 $ tCO2−1 in the year 2030." 5/8
This paper concluded that, "further #DAC modelling research activities in CO2 (sorption) bed form phenomena could not only break the barriers of current renewable tech., but also couple the CO2 reactions with the sequestration, reactors, or with electrolysis for e-fuels." 6/8
📰 Here's your round-up of top #CarbonDioxideRemoval News / Developments from this week (05 May - 11 May 2025):🧵0/17
Stockholm Exergi and Microsoft have extended their BECCS carbon removal deal from 3.33 to 5.08 million tonnes over ten years, making it the world’s largest annual agreement at 500,000 tonnes per year.
📰 Here's your round-up of top #CarbonDioxideRemoval News / Developments from this week (28 April - 04 May 2025):
🔗:
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Mirova announced a $40M investment in carbon projects across Argentina, Costa Rica, and Madagascar to restore 40,000 hectares, sequester 9.5M tonnes of CO₂, and support local communities.
Brazilian carbon removal startup Mombak has secured $30 million in Series A funding, led by Union Square Ventures (USV), to accelerate reforestation and carbon removal projects across the Amazon.
New research shows that large-scale #CDR—essential for 1.5°C or 1°C climate goals—could demand vast land areas if we rely on energy crops, potentially up to 10% of today’s cropland. But tech-based sol could greatly reduce that burden.
DETAILS🧵1/8
2/ Most CDR plans today focus on bioenergy with carbon capture (#BECCS), reforestation, and afforestation. These options are land-intensive. This study compares them with other portfolios that prioritize low land use, low cost, high tech readiness, and security.
3/ The researchers modeled two total CDR targets:
• 500 GtCO₂ for a 1.5°C pathway
• 1750 GtCO₂ for a 1.0°C pathway
They included not just the land for CDR methods, but also for energy sources like solar and wind to run the full CDR-energy-industry system.