Frauke Kracke
@fraukekracke.bsky.social
bio-chemical engineer, dedicated to help build a sustainable future,
looking for solutions to carbon removal as science lead at https://frontierclimate.com/
looking for solutions to carbon removal as science lead at https://frontierclimate.com/
Resources for those tracking the science:
🔗 Carbon to Sea’s 2025 annual convening takeaways: www.carbontosea.org/2025/07/28/2...
🔗 @Ocean_Visions OAE Field Trials database: oceanvisions.org/roadmaps/oae...
🔗 @theNASEM report on Ocean CDR: nap.nationalacademies.org/catalog/2627...
🔗 Carbon to Sea’s 2025 annual convening takeaways: www.carbontosea.org/2025/07/28/2...
🔗 @Ocean_Visions OAE Field Trials database: oceanvisions.org/roadmaps/oae...
🔗 @theNASEM report on Ocean CDR: nap.nationalacademies.org/catalog/2627...
Proceedings of the 2025 Carbon to Sea Annual Convening - Carbon to Sea Initiative
Over the past few months since the 2025 Annual Convening, the Carbon to Sea team has been compiling a comprehensive report of the key insights shared across three days of meaningful conversations, pre...
www.carbontosea.org
August 26, 2025 at 12:03 PM
Resources for those tracking the science:
🔗 Carbon to Sea’s 2025 annual convening takeaways: www.carbontosea.org/2025/07/28/2...
🔗 @Ocean_Visions OAE Field Trials database: oceanvisions.org/roadmaps/oae...
🔗 @theNASEM report on Ocean CDR: nap.nationalacademies.org/catalog/2627...
🔗 Carbon to Sea’s 2025 annual convening takeaways: www.carbontosea.org/2025/07/28/2...
🔗 @Ocean_Visions OAE Field Trials database: oceanvisions.org/roadmaps/oae...
🔗 @theNASEM report on Ocean CDR: nap.nationalacademies.org/catalog/2627...
Importantly, Planetary will make all collected data and metadata on efficacy verification as well as environmental monitoring available to the public following Carbon to Sea’s data management protocol.
www.carbontosea.org/oae-data-pro...
www.carbontosea.org/oae-data-pro...
OAE Data Protocol, Version 1.0.0 - Carbon to Sea Initiative
The OAE Data Management Protocol outlines recommendations for producing consistent data and metadata for Ocean Alkalinity Enhancement (OAE) research projects. With broad adoption, this protocol will m...
www.carbontosea.org
August 26, 2025 at 12:03 PM
Importantly, Planetary will make all collected data and metadata on efficacy verification as well as environmental monitoring available to the public following Carbon to Sea’s data management protocol.
www.carbontosea.org/oae-data-pro...
www.carbontosea.org/oae-data-pro...
Today, Frontier announced an offtake agreement with Planetary, the team behind the world’s first OAE verified tons. Their work is part of a growing set of global projects scaling responsible testing of OAE under real-world conditions.
frontierclimate.com/writing/plan...
frontierclimate.com/writing/plan...
Frontier buyers sign $31M deal with Planetary to advance ocean alkalinity enhancement
Frontier has facilitated offtake agreements with Planetary, a company that removes atmospheric CO₂ and reduces local ocean acidity by adding dissolved alkaline minerals to seawater.
frontierclimate.com
August 26, 2025 at 12:03 PM
Today, Frontier announced an offtake agreement with Planetary, the team behind the world’s first OAE verified tons. Their work is part of a growing set of global projects scaling responsible testing of OAE under real-world conditions.
frontierclimate.com/writing/plan...
frontierclimate.com/writing/plan...
Evidence to date — from mesocosms, oyster hatchery interventions, and > a dozen controlled coastal pilots — shows ability to control pH within safe bounds, measurable CO₂ drawdown, and no acute harm to local biota for alkalinity addition at relevant rates.
August 26, 2025 at 12:03 PM
Evidence to date — from mesocosms, oyster hatchery interventions, and > a dozen controlled coastal pilots — shows ability to control pH within safe bounds, measurable CO₂ drawdown, and no acute harm to local biota for alkalinity addition at relevant rates.
OAE raises alkalinity by adding minerals such as Ca(OH)₂, and Mg(OH)₂. This shifts carbonate chemistry, allowing for additional CO₂ uptake while locally providing relief from acidification.
August 26, 2025 at 12:03 PM
OAE raises alkalinity by adding minerals such as Ca(OH)₂, and Mg(OH)₂. This shifts carbonate chemistry, allowing for additional CO₂ uptake while locally providing relief from acidification.
The ocean absorbs ~25% of human CO₂ emissions. That uptake is acidifying surface waters, stressing calcifiers, and weakening the ocean’s carbon sink.
August 26, 2025 at 12:03 PM
The ocean absorbs ~25% of human CO₂ emissions. That uptake is acidifying surface waters, stressing calcifiers, and weakening the ocean’s carbon sink.
Karbonetiq: uses a low-cost, passive aeration system to mineralize industrial waste into Mg and Ca carbonates.
July 14, 2025 at 1:03 PM
Karbonetiq: uses a low-cost, passive aeration system to mineralize industrial waste into Mg and Ca carbonates.
pHathom Technologies, Inc: develops a storage solution for concentrated CO2 streams (e.g., for biogenic emissions) based on limestone dissolution, storing the CO2 safely and durably in the ocean.
July 14, 2025 at 1:03 PM
pHathom Technologies, Inc: develops a storage solution for concentrated CO2 streams (e.g., for biogenic emissions) based on limestone dissolution, storing the CO2 safely and durably in the ocean.
Limenet: develops an electric kiln for production of carbon-free lime for CDR approaches such as ocean alkalinity enhancement, mineral looping DAC or surficial mineralization.
July 14, 2025 at 1:03 PM
Limenet: develops an electric kiln for production of carbon-free lime for CDR approaches such as ocean alkalinity enhancement, mineral looping DAC or surficial mineralization.
This is all so f**ed. Hope grantees will be able to keep their funding and progress the science! Hold on!
February 28, 2025 at 3:40 PM
This is all so f**ed. Hope grantees will be able to keep their funding and progress the science! Hold on!
and if you speak german: www.linkedin.com/pulse/wie-ei...
Wie ein Münchner Unternehmen die Energieherausforderung der direkten CO2-Abscheidung meistert
Wir wissen, dass wir neben der Emissionsreduktion bis 2050 jährlich 5-10 Gigatonnen CO2 aus der Atmosphäre entfernen müssen, um die schlimmsten Auswirkungen des Klimawandels zu verhindern. Doch viele ...
www.linkedin.com
February 27, 2025 at 1:09 PM
and if you speak german: www.linkedin.com/pulse/wie-ei...