Geoengineering Info Profile picture
May 20, 2023 6 tweets 3 min read Read on X
Rewind "restore the earth's carbon balance by storing #OrganicCarbon in anoxic water."

#CarbonDioxideRemoval

Details in a 🧵 below ⬇️
1/6 Image
Plants are the best option for capturing CO2

"They naturally extract CO2 from the air and use it as feed. The more CO2 plants absorb, the less CO2 remains trapped in the atmosphere."
2/6 Image
As plants decompose, CO2
is released back to the air

"If left alone, plants are eaten by other organisms and releasing the carbon back to the carbon cycle within months."
3/6
Anoxic conditions slow decomposition

"In anoxic waters, plants decompose extremely slowly, effectively storing the carbon much longer."
4/6 Image
The Black Sea is the ideal location

"It is the largest anoxic body of water on earth, 2km deep, surrounded by fertile lands. The Black Sea is the optimal environment allowing affordable, environmentally safe, gigaton scale #CarbonRemoval in this decade."
5/6 Image
Read more about Rewind here ⬇️
rewind.earth

#CarbonDioxideRemoval

6/6 Image

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More from @geoengineering1

Oct 22
🚨A new study warns that efforts to cool the planet through stratospheric aerosol injection (#SAI) could face far greater challenges than models predict, from unpredictable monsoon shifts to material shortages & engineering limits, every step adds new risks.

🧵1/8 #SRM Image
2/ The authors explore both micro-level (engineering) and macro-level (governance & supply) factors that could restrict feasible deployment.

Key finding: these constraints could drastically raise costs, risks, and uncertainty, especially for “solid” (non-sulfate) aerosols.
3/ Traditional SAI uses sulfate aerosols (like volcanoes).

But alternatives, CaCO₃, TiO₂, Al₂O₃, ZrO₂, even diamond, promise less ozone damage.

Yet producing, aerosolizing, and dispersing these solids in submicron form is technically daunting. Image
Read 9 tweets
Oct 19
📝💡𝐖𝐞𝐞𝐤𝐥𝐲 𝐂𝐃𝐑 𝐇𝐢𝐠𝐡𝐥𝐢𝐠𝐡𝐭𝐬💡📝

📰 Here's your round-up of top #CarbonDioxideRemoval News / Developments from this week (13 October - 19 October 2025):

📺:

🧵1/25
Nordbex and Aker Solutions signed an MoU to develop Bio-CCUS plants across Europe.
mynewsdesk.com/se/nordbex-ab/…
Bain & Company has partnered with ZeroEx to scale up enhanced rock weathering projects.
qcintel.com/carbon/article…
Read 25 tweets
Oct 17
🚨Scientists built a device that captures carbon from the seawater and turns it into biodegradable plastic, using bacteria as a living bioreactor.

#CDR #mCDR #CarbonDioxideRemoval #Bioplastics

DETAILS🧵1/8 Image
2/ The system comprises 3 components:

1️⃣ C extraction

Traditional seawater electrolysis systems often fail within hours due to mineral buildup

To solve this, researchers designed a solid-state electrolysis unit that isolates sensitive ions using membranes & a solid electrolyte Image
3/ The modified design acidifies H2O, converting dissolved C (mainly bicarbonate & carbonate ions) into CO₂ gas for collection.

The prototype operated continuously for 22 days, processing 177 liters of seawater & extracting 6.54L of CO₂, with an energy use of 3 kWh/kg of CO₂.
Read 9 tweets
Oct 16
🚨French Academy of Sciences has released a new report on #SolarGeoengineering, stressing that the absolute priority must remain reducing GHG emissions via structural changes & accelerating adaptation to climate impacts.

On #SRM, the report offers several recommendations:🧵1/6 Image
2/ SRM Recommendation 1️⃣

Promote an international agreement aimed at prohibit any initiative, public or private, to deploy SRM, regardless of the framework or scale.

To do this, the entire scientific community will have to be involved.
3/ SRM Recommendation 2️⃣

Support & deepen research on climate, atmospheric physicochemical processes and biodiversity in order to be able to rigorously assess the potential & risks of SRM.
Read 7 tweets
Oct 11
🚨An analysis of forest-based projects funded through the sale of #CarbonCredits shows that 10% of them may have a net warming effect on the climate because of the way they alter the Earth’s #albedo, or how much sunlight is reflected back into space.

DETAILS🧵1/12 Image
2/ Albedo is how much sunlight Earth’s surface reflects vs. absorbs

Forests are darker than grass or snow, meaning they absorb more heat

So when grasslands or snowy areas are turned into forests, Earth’s surface can absorb more heat, partly cancelling out cooling effect of #CDR Image
3/ So, this study analyzed 172 Afforestation, Reforestation & Revegetation projects in the Voluntary Carbon Market - projects that collectively aim to deliver nearly 800 million tons of CDR over the next century.

But none of these projects’ standards account for albedo change. Image
Read 13 tweets
Oct 8
🚨New paper argues that rejecting Carbon Dioxide Removal (#CDR) on moral hazard grounds may itself be unjust.

Using a framework of transitional justice, they propose that CDRs can, if carefully governed, form part of a just transition to a livable climate.

🧵1/9 Image
2/ The authors note that with climate overshoot increasingly inevitable, the IPCC and Climate Overshoot Commission both view CDRs as unavoidable.

The question shifts from whether to use CDRs to how to deploy them justly.
3/ The authors apply transitional justice - a framework for navigating imperfect choices to reach fairer outcomes.

It asks: when can seemingly unjust actions (like risky technologies) be justified to achieve a more just, sustainable future?
Read 10 tweets

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