Geoengineering Info Profile picture
Apr 22, 2023 8 tweets 6 min read Read on X
🚨NEW REVIEW PAPER🚨

"This review provides an extensive evaluation of recent advances in multiscale models used for the theoretical physical descriptions of #DirectAirCapture."

🧵
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"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
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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."
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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
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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."
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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."
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Read the open-access review paper based on multiscale modelling of Direct Air Capture ⬇️
sciencedirect.com/science/articl…

#DirectAirCapture
#DAC
#MultiscaleModellingSimulations

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More from @geoengineering1

May 15
🚨NEW STUDY: We could trap 18 billion kilos of CO₂ a year by tweaking how we treat our wastewater.

How? By adding alkaline rocks like olivine—turning treatment plants into climate allies. A quick thread🧵1/7

#CDR #CarbonRemoval #ClimateSolutions Image
2/ Carbon dioxide removal is about pulling CO₂ out of the air and locking it away.

One such technique, OAE, helps the ocean absorb more CO₂ by increasing its alkalinity, which reduces surface ocean acidity. Image
3/ This study tested something new: adding olivine-rich rock to urban wastewater before it hits the ocean.

The result? A big jump in both alkalinity and CO₂ capture in the treated water. Image
Read 8 tweets
May 12
📝💡𝐖𝐞𝐞𝐤𝐥𝐲 𝐂𝐃𝐑 𝐇𝐢𝐠𝐡𝐥𝐢𝐠𝐡𝐭𝐬💡📝

📰 Here's your round-up of top #CarbonDioxideRemoval News / Developments from this week (05 May - 11 May 2025):🧵0/17 Image
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.

1/17
esgnews.com/microsoft-expa…
@Climeworks and NYK have signed a multi-year agreement to remove CO₂ using a portfolio of carbon removal solutions like ERW, biochar and BECCS.

2/17
climeworks.com/press-release/…
Read 20 tweets
May 6
🚨🗓CDR REMINDERS!🗓🚨

Here's a list of what's coming up this week (06 May - 12 May 2025) in the field of #CarbonDioxideRemoval:

🔗🗓️Link to the CDR Events Calendar:


#CDREvents #CDRJobs #Deadlines

🧵1/13 teamup.com/kshqbfhrqkw36s…Image
EVENT—Sponsored CarbonX Info Session: Millions of USD for CDR and more! by @openaircollect

🗓06 May 2025 | Online
🔗

2/13lu.ma/05mrg40o
EVENT—Bio-CO2 Use and Removal 2025

🗓06 May 2025 | Helsinki, Finland
🔗

3/13bioenergia.fi/bio-co2-use-an…
Read 16 tweets
May 4
📝💡𝐖𝐞𝐞𝐤𝐥𝐲 𝐂𝐃𝐑 𝐇𝐢𝐠𝐡𝐥𝐢𝐠𝐡𝐭𝐬💡📝

📰 Here's your round-up of top #CarbonDioxideRemoval News / Developments from this week (28 April - 04 May 2025):

🔗:

🧵0/21
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.

1/21
impact-investor.com/mirova-invests…
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.

2/21
esgnews.com/brazils-mombak…
Read 24 tweets
May 2
🚨How much land will CDR take?

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 Image
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. Image
Read 9 tweets
Apr 29
🚨🗓CDR REMINDERS!🗓🚨

Here's a list of what's coming up this week (29 April - 05 May 2025) in the field of #CarbonDioxideRemoval:

🔗🗓️Link to the CDR Events Calendar:


#CDREvents #CDRJobs #Deadlines

🧵1/13 teamup.com/kshqbfhrqkw36s…Image
EVENT—Marine Carbon Removal Fireside by Seoi.Cure CDR x Women in Carbon

🗓29 April 2025 | London, England
🔗

2/13lu.ma/1vyqin0b
EVENT—European Carbon Removal Policy in 2025: The Trailblazers Moving CDR Forward by Carbonfuture

🗓29 April 2025 | Online
🔗

3/13carbonfuture.com/events/europea…
Read 14 tweets

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