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Apr 12 3 tweets 7 min read Read on X
📝💡𝐖𝐞𝐞𝐤𝐥𝐲 𝐂𝐃𝐑 𝐇𝐢𝐠𝐡𝐥𝐢𝐠𝐡𝐭𝐬💡📝

📰 Here's your round-up of top #CarbonDioxideRemoval News / Developments from this week (06 April - 12 April 2026):

📺:

🧵1/
Microsoft paused all carbon removal purchases.
heatmap.news/carbon-removal…

JPMorgan signed 10-year biomass-based carbon removal deal with Graphyte.
esgtoday.com/jpmorgan-signs…

Chestnut Carbon issued 95,909 U.S. improved forest management credits using Verra removals tag.
esgnews.com/chestnut-carbo…

Grassroots Carbon signed a multi-year deal with Boeing for at least 40,000 t of soil-based CDR credits.
esgtoday.com/boeing-signs-4…

ZEN Carbon partnered with a concrete plant, marking first live industrial deployment of its tech.
linkedin.com/posts/zencarbo…

Varhad Capital and Velocys partnered to scale biomass-to-SAF and biochar production in India
prnewswire.com/news-releases/…

Cowboy Clean Fuels partnered with Absolute Climate to certify CDR under the ACS registry.
globenewswire.com/news-release/2…

Concept Lab signed an MOU with CURA to explore the use of low-carbon cement.
linkedin.com/posts/conceptl…

Exomad Green and Beston Group partnered to expand biochar capacity in Bolivia to remove 1Mt CO₂/yr by 2027.
biochartoday.com/news/exomad-gr…

VodafoneZiggo invested in carbon removal via Klimate partnership.
vodafoneziggo.nl/en/nieuws/co%E…

CURA and Progressive Planet Alberta agreed on cement testing collaboration for low-carbon cement.
linkedin.com/posts/curaclim…

Earthly and Nattergal partnered to bring biodiversity credits alongside high-integrity CDR.
linkedin.com/posts/natterga…

Svante and Meadow Lake Tribal Council (MLTC) secured a Microsoft offtake for 626,000 t CDR from a BECCS project in Saskatchewan.
svanteinc.com/press-releases…

Verra released updated Article 6 and CORSIA guidance plus a new buyer resource for carbon credit compliance.
verra.org/verra-releases…

US EPA issued a Class VI permit for Indiana CCS project led by Vault 44.01 and Cardinal Ethanol.
carbonherald.com/first-indiana-…

Isometric released draft biochar mobile reactor module for public consultation (deadline: 30 Apr 2026).
isometric.com/writing-articl…

ETH Zurich launched a survey to map carbon removal ecosystem in Sub-Saharan Africa. Dedline to respond: 24 April 2026
mtecethz.qualtrics.com/jfe/form/SV_26…

Fraunhofer-Institut für Solare Energiesysteme ISE published a new study on role of NETs in Germany’s 2045 climate neutrality goal.
ise.fraunhofer.de/de/veroeffentl…

ClimeFi Q1 2026 report highlighted CDR contracts hit 1,860 ktCO₂, nearly 3× YoY, with strong biochar dominance.
climefi.com/reports/cdr-ma…

CRIA, MANT and Energiva released report on ERW practices and policy framework for India.
…9-447c-a87c-c176b5767f20.usrfiles.com/ugd/098df0_43a…

Milkywire released a white paper explaining how companies can reach net zero by reducing emissions they control and using durable carbon removal for their residual emissions.
milkywire.com/white-papers/o…Image
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More from @geoengineering1

Apr 3
🚨🗞️Monthly Solar Geoengineering Updates (March'26 Edition)🗞️🚨

From UN review of #SRM tech & its human rights impacts, to US organizations resisting SRM bans, plus new tools & research awards – SRM headlines you need to know from the past month:🧵1/13

🔗 …largeoengineeringupdates.substack.com/p/monthly-sola…Image
🚨Top 10 SRM Updates from March 2026:

1️⃣ @OHCHR_MENA seeks input on climate technologies - The UN Human Rights Office is collecting submissions on how SRM & CDR may impact human rights, with a report due later this year.

2/13 Image
2️⃣ US National Security Framing – ACCF report urges federal research and international governance to prevent rivals from gaining strategic advantage.

3/13 Image
Read 14 tweets
Apr 1
🚨Direct air capture (#DAC) using amine-based sorbents is one of the "most promising ways" to remove CO₂, but a core challenge remains: the materials degrade over time, raising costs and limiting scale.

A new study examines why that happens and how to fix it.🧵1/12 Image
2/ Degradation here means any chemical or physical change that reduces CO₂ uptake or increases energy needed for regeneration.

Over time, even small losses compound, turning a promising material into a costly bottleneck.
3/ The paper highlights that degradation is not a single process.

It emerges from a combination of oxidative, thermal, and environmental pathways, each interacting with the sorbent’s molecular structure in different ways. Image
Read 14 tweets
Mar 26
🚨New research from WashU shows that diamond dust, long proposed as an ideal solar geoengineering (#SRM) material for #SAI, may lose much of its cooling potential when real-world chemistry & manufacturing constraints are taken into account.

DETAILS🧵1/11 Image
2/ Solar geoengineering, particularly stratospheric aerosol injection (#SAI), seeks to mimic volcanic cooling by dispersing reflective particles into the upper atmosphere, reducing incoming solar radiation and temporarily offsetting warming.
3/ Sulfate aerosols (from volcano-like approaches) can cool the planet, but they come with risks: acid rain, ozone damage, and health impacts.

So scientists have been searching for safer alternatives like diamond.
agupubs.onlinelibrary.wiley.com/doi/10.1029/20…
Read 13 tweets
Mar 18
🚨Where should Direct Air Capture (#DAC) be deployed to scale carbon removal?

New research shows: costs are driven less by the technology itself and more by location, climate, and energy systems, making DAC a fundamentally geo-dependent solution.

Details🧵1/10 Image
2/ DAC needs to scale to 0.5–5 GtCO₂/year by 2050, yet current capacity is ~0.00004 Gt.

Scaling requires massive cost reductions, and smart siting.
3/ The study evaluates two leading approaches:
• Solid sorbent DAC (S-DAC)
• Liquid solvent DAC (L-DAC)

Using global, high-resolution data on weather and renewable energy availability.
Read 12 tweets
Mar 12
🚨Could massive volcanic events trigger natural carbon dioxide removal (#CDR)?

New study suggests that during the Emeishan supervolcanic eruptions (~260M yrs ago), enhanced weathering of uplifted rocks removed huge amounts of atm CO₂, cutting levels nearly in half.

How?🧵1/11 Image
2/ Large igneous provinces (LIPs) are among the largest volcanic events in Earth’s history, typically releasing huge volumes of lava over 1-5 million years.

They’re widely thought to drive CO₂ spikes, warming, and environmental crises through massive volcanic degassing.
3/ To test this assumption, researchers reconstructed atmospheric CO₂ levels across the Emeishan volcanic episode using carbon isotopes from chlorophyll-derived biomarkers preserved in marine sediments from the Shangsi section in China.
Read 13 tweets
Mar 11
🚨How much does the shape of particles matter for #SolarGeoengineering?

A new study tests whether non-spherical particles could improve the cooling efficiency of #SAI.

The result: shape can help slightly, but particle size & refractive index dominate the cooling effect.🧵1/11 Image
2/ SAI aims to cool Earth by injecting particles into the lower stratosphere that scatter incoming sunlight back to space, increasing planetary reflectivity (albedo).

The effectiveness of these particles depends on their optical properties, how they scatter and absorb sunlight.
3/ Most previous studies optimized SAI particles assuming they're perfect spheres, focusing on 2 parameters: particle radius & refractive index.

But real particles in the atm are often irregular or elongated, raising an imp Q: could particle shape improve solar reflection?
Read 13 tweets

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