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Apr 26 3 tweets 9 min read Read on X
📝💡𝐖𝐞𝐞𝐤𝐥𝐲 𝐂𝐃𝐑 𝐇𝐢𝐠𝐡𝐥𝐢𝐠𝐡𝐭𝐬💡📝

📰 Here's your round-up of top #CarbonDioxideRemoval News / Developments from this week (20 April - 26 April 2026):

📺:

🧵1/
Carbonyx raised $1.2M to convert mining waste into silica & carbonates for CDR.
betakit.com/carbonyx-raise…

@AltCarbonIndia delivered 2,500t ERW credits to Mitsui O.S.K. Lines.
altcarbon.com/press-releases…

BCarbon issued 80,000 verified CDR credits from Carbon Rho’s Red River pilot project.
decarbonfuse.com/posts/bcarbon-…

CURA Climate and TITAN Group partnered to validate low-carbon cement technology.
curaclimate.com/press/cura-and…

Mangrove Systems acquired biochar CDR platform Grain Ecosystem.
esgtoday.com/mangrove-syste…

@kita_earth & Gallagher launched risk intelligence service for CDR projects.
kita.earth/blog/kita-gall…

Capture6 secured financing to scale brine-to-freshwater while removing up to 25,000 tCO₂/yr.
linkedin.com/posts/carbonre…

Verra issued the first credits under its afforestation, reforestation, and revegetation (ARR) methodology, VM0047.
verra.org/verra-approves…

Elkem sold biocarbon assets to CHAR Technologies, entering a 5-year supply agreement for 62,500 tonnes.
biochartoday.com/news/elkem-and…

Altitude partnered with Engrow for +425,000t CDRs from Biochar Facilities in India.
altitudecarbon.com/news/altitude-…

@Isometric_HQ expanded into Environmental Attribute Certificates, becoming the first certifier to support CDR, superpollutant reduction, and EACs on a single registry.
isometric.com/writing-articl…

Chestnut Carbon doubled its footprint in Southeast U.S. to nearly 70,000 acres of restored forests.
prnewswire.com/news-releases/…

Three Tigasfera biochar facilities added to Puro.earth's supplier list.
linkedin.com/posts/announce…

Climate Impact Partners partnered with Aviva Investors on Colombian afforestation project.
climateimpact.com/news-insights/…

Climeworks & Stockholm Exergi partnered on BECCS project and targets 800,000 tCO₂/yr from 2028.
linkedin.com/posts/climewor…

Verde Resources & Oregon Biochar Solutions partnered to integrate biochar into asphalt.
biochartoday.com/news/verde-res…

NoviqTech’s Coralia and A Healthier Earth launched 2Mt biochar project generating 550k credits.
biochartoday.com/news/noviqtech…

Canadian Discovery Ltd. released the geological carbon storage atlas of Eastern Canada.
cdl.canadiandiscovery.com/news/new-atlas…

The Rainbow Biogenic carbon capture and storage methodology is open for public consultation. Deadline: 21 May 2026
docs.rainbowstandard.io/~/changes/229/…

Gold Standard has launched its first methodology for biochar-based CDR. Consultation closes: 22 May 2026
goldstandard.org/consultations/…

The UpLink–World Economic Forum Innovation Challenge is open for CDR startups. Applications close 4 June 2026.
uplink.weforum.org/systems-indust…

Italy could reach net-zero by 2050 via CDR scale-up, per new @CarbonGap & B3 Carbon report.
carbongap.org/deploying-cdr-…

CO2RE published a report on the challenges of scaling up CDR across the UK, EU, US and beyond & how they can be addressed.
co2re.org/publication/sc…

Report by @CarbonGap and Deloitte North and South Europe (NSE) highlighted untapped CDR potential in wastewater, concrete, and mining waste sectors
carbongap.org/new-report-hig…

@xprize Carbon Removal released its Post-Prize Impact Report, highlighting major progress like 2,800+ jobs created, 243,552 tonnes of CO₂ removed, and over $3.3B in capital mobilized.
xprize.org/news/post-priz…

@cdr_fyi noted gaps between projected vs real CDR performance in new article.
cdr.fyi/blog/durable-c…

Forest-based BECCS likely to raise emissions for decades, per new study.
nature.com/articles/s4189…

Myno Carbon technical paper showed biochar improves hydrocarbon remediation and removes up to 2.08 kg CO₂e/kg.
…-corp-46516649.hubspotpagebuilder.com/biochar-for-hy…
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More from @geoengineering1

Apr 22
🚨Green roofs + enhanced rock weathering (#ERW) could turn cities into carbon sinks.

A new assessment finds Europe’s rooftops could remove tens of millions of tonnes of CO₂ by 2060, with global potential reaching hundreds of MtCO₂/yr under ideal conditions.

Details🧵1/12 Image
2/ The work is a conceptual, literature-based assessment combined with geochemical scaling.

It estimates CO₂ removal using theoretical maximum reactivity (100% mineral conversion) and extrapolates across urban roof availability in Europe and globally.
3/ Roof availability is a key input:

The study uses estimates that roofs cover ~30–32% of urban land area, and up to ~50% of impervious surfaces in dense cities, highlighting a large, currently underused surface for carbon removal deployment. Image
Read 14 tweets
Apr 16
🚨A new study details that the climate value of algae & cyanobacteria lies not in CO₂ uptake alone, but in their capacity to generate long-lived, chemically recalcitrant C compounds, such as algaenan & carbonates that may contribute to durable sequestration pathways.

🧵1/11 Image
2/ The study adopts a conceptual synthesis framework, integrating biochemical & geochemical evidence to examine carbon fate post-photosynthetic fixation, moving beyond uptake rates to study the thermodynamic and structural persistence of biogenic carbon. Image
3/ It constructs a functional distinction between:

1) Labile carbon fractions, which are rapidly cycled through microbial respiration

2) Recalcitrant fractions, which resist degradation & contribute to long-term carbon storage across terrestrial & marine systems.
Read 12 tweets
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

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