Geoengineering Info Profile picture
May 23, 2023 10 tweets 4 min read Read on X
"Using seawater & low-carbon electricity, @ebbcarbon can remove gigatons of CO2 permanently at competitive costs."

#ElectrochemicalOceanAlkalinityEnhancement
#CarbonDioxideRemoval

Take a step-by-step walkthrough of how their solution works in a 🧵 below ⬇️

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1️⃣ "@ebbcarbon with aquaculture farms, desalination plants, ocean research labs, and other industrial sites that process seawater."
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2️⃣ "Ebb intercepts existing salt water flows at the facility and processes the water before it returns to the ocean."
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3️⃣ "Using low carbon electricity, Ebb run the salt water through a stack of ion-selective membranes that separate it into acidic and alkaline solutions."
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4️⃣ "Ebb measure and monitor the pH level and volume of the alkalinity we produce in real time. This enables us to safely return it at levels within the ocean's natural pH variance."
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5️⃣ "Ebb return the alkaline solution to the sea, where it immediately lowers the acidity of the sea water locally."
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6️⃣ "Over weeks to months, the alkaline solution reacts with dissolved CO2 in seawater to create bicarbonate (HCO3), a stable form of carbon storage for 10,000+ years."
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7️⃣ "With more CO2 locked away as bicarbonate, the ocean will naturally equilibrate and sequester more CO2 from the air. Ebb measures the CO2 removed from the air using sensors in the water and ocean and carbonate chemistry models."
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8️⃣ "By partnering with the ocean, Ebb Carbon has the potential to be one of the most energy efficient and cost effective ways to reverse the impacts of climate change both locally and globally."
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Learn more about @ebbcarbon
here ⬇️ ebbcarbon.com/solution

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More from @geoengineering1

Nov 5
🚨 The Royal Society has published a new briefing today finding that techniques to reflect a small portion of sunlight back into space (#SRM) could help lower global temperatures if deployed worldwide, but cannot replace emissions cuts or fully address climate impacts.

🧵1/7 Image
2/ ➝ The report reviews solar radiation modification (#SRM) approaches, including stratospheric aerosol injection (#SAI) and marine cloud brightening (#MCB), outlining their potential to temporarily reduce warming and associated risks.
3/ ➝ It notes that SRM would only mask the effects of GHG emissions and would not address issues such as ocean acidification.
Read 8 tweets
Oct 31
🚨🌲 New research reveals that even intact boreal forests, some of the planet’s strongest natural carbon sinks, lose their ability to absorb CO₂ as they age.

Here’s what the scientists found & why it matters for our climate models🧵1/9 #CarbonSink #CarbonRemoval Image
2/ Boreal forests cover vast regions across Canada, Russia, and Scandinavia and store enormous amounts of carbon in trees and soil.

They’re often seen as stable, long-term carbon sinks, but this study challenges that assumption with new global-scale data.
3/ Using seven global Net Ecosystem Productivity (NEP) datasets and a high-resolution forest age map, researchers tracked how C uptake changes as forests grow older.

They used a space-for-time substitution method, comparing forests of different ages to infer long-term trends. Image
Read 10 tweets
Oct 29
🚨A major 6-country survey (N=5,310) finds Europeans support -ve emissions to meet climate goals, but strongly prefer nature-based solutions like afforestation over engineered options like Direct Air Capture. Trust hinges on benefits for nature & future generations.

🧵1/10 #CDR Image
2/ When allocating how to tackle emissions, respondents clearly prioritized immediate mitigation:

• Renewables: 37.3%
• Behavior change: 24.0%
• Nuclear: 20.2%
• NETPs: 18.5%

➡️ This shows people support #CDR, but believe deep emissions cuts must come first. Image
3/ So which NETPs do they support most?

2 approaches were evaluated:
🌲Afforestation/Reforestation (AR)
🏭Direct Air Capture + Carbon Storage (DACCS)

AR scored +1.91 vs DACCS +0.64

➡️ This means people are 4.36× more likely to support forests as the favored way to remove CO₂. Image
Read 11 tweets
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

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