 | | | | Links to recent scientific papers, web posts, upcoming events, job opportunities, podcasts, and event recordings, etc. on Carbon Dioxide Removal Technology2025 key purchases (ktCO2) / 2025 key yearly purchases (MtCO2) (Source)Subscribe to stay informed on carbon dioxide removal tech and support our independent reporting through a paid subscription.Donate < $10 Get 20% off a group subscription TABLE OF CONTENTSNote: Click on the headings listed in the table of contents above to easily navigate to the sections you’re interested in.THIS WEEK’S TOP CDR HIGHLIGHTSCall for Proposals: Milkywire has launched a 2026 open call for durable CDR proposals, inviting innovators and project developers to submit ideas by February 9, 2026. The initiative seeks both early-stage breakthroughs and more advanced CDR solutions to help fight climate change. 2025 CDR Year in Review: Carbon Removal Updates released 2025 Year in Review report that highlights major CDR trends, including market growth, key projects, policy rollbacks, government initiatives, startup funding, high-profile announcements, and essential CDR resources and reads. Report: According to a new analysis by Sabin Center For Climate Change Law, existing US federal and state laws create potential regulatory obstacles for enhanced rock weathering (ERW) projects in Minnesota, while targeted legal reforms could help close gaps and enable the carbon dioxide removal pathway to scale. Resource: BloombergNEF has launched its Carbon Removals Purchasing Database, tracking private-sector carbon removal credit purchases since 2019, and partnered with CDR.fyi to include future off-registry offtake agreements. Government Initiative: The Netherlands has launched a new €10 million ($11.5 m) carbon removal innovation programme under RVO to accelerate R&D in CDR technologies, offering grants up to €4 m per project. The scheme targets collaborative research into carbon capture, durable storage, and novel removal methods, with applications open March 17-April 16. Read on to unpack more updates: COMMERCIAL NEWS Share RESEARCH PAPERSAuthors: Christopher T. Reinhard & Noah J. PlanavskySynopsis: Carbon removal is debated because scaling it could delay conventional mitigation efforts. This article argues for radical transparency in data supporting carbon removal claims and cost evaluations. Such transparency, though a major shift from current practice, could reduce negative impacts on near-term mitigation and ensure that future carbon removal efforts genuinely serve the public good.
Authors: Kelsey E. Roberts, Tyler Rohr, Morgan R. Raven, Michael S. Diamond, Daniele Visioni, et al.Synopsis: Rising global temperatures threaten marine ecosystems, biodiversity, and fisheries, with warming likely exceeding 1.5–2°C this century. Climate interventions - CDR and solar radiation modification (SRM) - could reduce warming but carry uncertain impacts on marine ecosystems. This review outlines proposed marine CDR and SRM methods, highlights knowledge gaps, and emphasizes the need for pathway- and region-specific assessments to quantify trade-offs, minimize risks, and guide scaling of interventions that protect marine biodiversity and ecosystem function.
Authors: Yide Han, Olajide Otitoju, Ariane D. N. Kamkeng, Meihong Wang, Hui Yan, Fisher Millard, Wenli Du & Feng QianSynopsis: This study presents a 1 MtCO₂/year renewable-powered direct air capture process using a hydrogen fluidised solar calciner and onsite conversion to sustainable aviation fuel. Replacing fossil heating with solar thermal energy cuts electricity use by 63% and onsite CO₂ emissions by 59%, while producing fuel cost-effectively at US$4.62/kg. Geographical analysis highlights low-risk, high-solar regions with cheap hydrogen as ideal deployment sites, demonstrating both economic viability and a pathway for circular-economy decarbonisation.
Authors: Walter Leal Filho, Johannes M. Luetz, Maria Alzira Pimenta Dinis, Julian David Hunt, Gustavo J. NagySynopsis: This article examines the feasibility of large-scale CDR in the Arctic, where rapid warming and permafrost dynamics pose challenges. It reviews nature-based solutions (peatland restoration, blue carbon, afforestation), enhanced rock weathering, ocean alkalinity enhancement, and direct air capture, finding most approaches constrained by ecological, energy, monitoring, and governance limits. Peatland restoration and blue carbon are most actionable, while DACCS and OAE require major infrastructure. Arctic CDR is technically possible but highly context-dependent, requiring strict operational conditions, robust governance, and ongoing global emissions reductions.
Authors: Iwona Galeczka, Martin Voigt, Daniel Andres Duque Carrillo, et al.Synopsis: This study evaluates using seawater for subsurface CO₂ mineralization in basalt at Straumsvík, Iceland. Experiments show similar trace element mobility in freshwater and seawater, with minor Al, Fe, and Mn exceeding WHO limits, and reaction modelling predicts up to 100% mineralization efficiency. Mixing with reservoir water minimally affects chemistry or secondary minerals. Findings indicate seawater is a feasible medium for CO₂ storage, but complex hydrogeology and regulatory considerations require integrated planning for safe, large-scale implementation.
Authors: Stéphane Polteau, P. Craig Smalley, Vani N. Devegowda, et al.Synopsis: This study assesses CO₂ storage potential in basalt by analyzing 87Sr/86Sr variations in pore waters and carbonate cements. Smooth isotope trends through a 100 m basalt section indicate a well-connected fluid reservoir, with low-permeability lava interiors not impeding lateral flow. Overlying unconsolidated sediments act as effective seals, preventing seawater intrusion and CO₂ leakage. Findings confirm that basaltic sequences are viable targets for permanent CO₂ storage, with fractures potentially enhancing reservoir connectivity.
Authors: Sinchan Banerjee, Abhisek Santra, Tuhin Bhadra, et al.Synopsis: This study evaluates blue carbon stocks in the Indian Sundarbans, estimating a total of 10 Tg C, and projects a potential loss of 11 Tg C by 2100 due to anthropogenic and environmental pressures. Using historical data, field measurements, remote sensing, and modeling, the research identifies threats to carbon storage and proposes comprehensive land management strategies. Recommendations focus on addressing knowledge gaps and enhancing mangrove conservation and restoration to protect and sustain the Sundarbans’ climate mitigation potential.
Authors: Joris Herbermann, Bob van der Zwaan & Drielli PeyerlSynopsis: This study evaluates the Bioenergy with Carbon Capture, Utilization, and Storage (BECCUS) value chain against all 17 Sustainable Development Goals (SDGs) using a Value Chain Assessment and PESTLE analysis. BECCUS impacts 15 SDGs and 53 of 169 targets, with 107 positive (55 direct, 52 indirect) and 46 negative (9 direct, 37 indirect) effects. While supporting climate action (SDG 13), concerns arise around technology access (SDG 9). The work provides an evidence-based framework and policy guidance for sustainable BECCUS deployment.
Authors: Robert J. Allen, Taylor Adkins & Olivia E. CliftonSynopsis: This study examines how doubled atmospheric CO₂ affects the climate mitigation potential of large-scale afforestation. Using a coupled atmosphere–land–slab–ocean model, simulations show that changes in albedo, evapotranspiration, and biogenic emissions slightly reduce warming by 0.06 ± 0.04 K, while carbon sequestration adds 0.20 K of cooling. Overall, even under doubled CO₂, tree restoration retains nearly its full climate mitigation potential.
Authors: William C. G. Burns, Romany WebbSynopsis: Meeting the Paris Agreement requires deep decarbonization and large-scale carbon dioxide removal, including marine CDR (mCDR). While mCDR could draw down substantial CO₂, it carries ecological and societal risks, and current governance is fragmented. This article highlights the upcoming Biodiversity Beyond Jurisdiction Agreement, effective January 2026, as a potential framework to coordinate governance, set guardrails, and guide responsible research and deployment of marine carbon dioxide removal.
Authors: Wenguang Tang, Jefferson S. Hall, Oliver L. Phillips, et al.Synopsis: This study examines nutrient limitation of carbon sequestration during tropical forest recovery in Central America. Nitrogen strongly limits biomass accumulation in young forests, boosting growth by 95% in abandoned pastures and 48% in 10-year-old forests, while older forests show no nitrogen or phosphorus limitation. Extrapolating globally, nitrogen limitation in young tropical forests could constrain the sequestration of 0.69 (0.47–0.84) Gt CO₂ annually, highlighting the importance of nutrient availability for forest-based climate mitigation.
Authors: Tanvi Nagwekar, Christopher Danek, Miriam Seifert and Judith HauckSynopsis: This study evaluates OAE globally and in subduction regions of the Southern Ocean, Northwest Atlantic, and Norwegian-Barents Sea using an emissions-driven Earth System Model. By 2100, regional OAE achieves nearly comparable efficiency to global deployment, though deep ocean carbon storage is limited by climate feedbacks and internal variability. Scenario-dependent effects and early-decade uncertainties challenge monitoring and verification. Despite these constraints, subduction regions remain viable for OAE, with first-order carbonate chemistry effects robustly represented and feedbacks accounting for 13–20% of variability.
Authors: Epaminondas BellosSynopsis: This study presents four sustainability scenarios illustrating potential futures along Sustainability–Collapse and Environment–Economy axes. The Grey Sky Scenario depicts recurring crises that undermine the 2030 Agenda. The Orange Sky Scenario warns of diminishing options amid energy–climate tensions. The White Sky Scenario shows risks from misguided solar geoengineering and irreversible biodiversity loss. The Blue Sky Scenario envisions a recovering, equitable planet where technology and wise decision-making support sustainable development, guided by an added Sustainable Development Goal for collective governance.
Authors: Yanli Dong, Zhen Yu, Thomas Pugh, et al.Synopsis: This study evaluates China’s planned 49.5 Mha forest expansion, showing that forest edge effects, higher tree mortality from wind, drought, pests, and fire, substantially reduce carbon storage. Using a spatial optimization strategy to minimize edge impacts, forestation could achieve a 51% higher carbon gain (986 ± 22 Tg by 2060), with half of the increase from reduced edge effects. Results highlight that accounting for edge effects is essential for accurately estimating carbon sink potential and maximizing climate mitigation and ecological benefits.
Authors: Abby Lunstrum, Alex Wyckoff, Alec Wallace, Rylie Pelton, Anastasia O’RourkeSynopsis: This study evaluates ex situ CO₂ mineralization - reacting CO₂ with silicate minerals - as a climate mitigation strategy using a parameterized lifecycle assessment. Case study results with olivine in Washington State show outcomes ranging from net CO₂ positive to highly CO₂ negative, with some scenarios exceeding 100% efficiency when avoided emissions are included. Capture efficiency depends on low-carbon electricity, short transport, passive CO₂ capture, and co-product use in cement or metal recovery. The model is technology- and mineral-agnostic, providing a tool for project assessment and comparison.
Authors: Alice Favero & Kemen G. AustinSynopsis: This study assesses the future potential and costs of forest-based carbon mitigation across 215 countries using dynamic economic modelling and FAO data. At a carbon price of $100/tCO₂ in 2050, forests could sequester 8 GtCO₂, split between afforestation/reforestation (38%), avoided deforestation (26%), and improved management (37%), mostly in the tropics. Limiting afforestation to historical rates reduces mitigation by up to 42%, especially in temperate forests. Results inform policymakers on the scale, cost, and strategies for effective forest-based climate action.
Authors: Gunter Flipkens, Greet Lembregts, and Filip J.R. MeysmanSynopsis: This study evaluates cement kiln dust (CKD) and lime kiln dust (LKD) as feedstocks for ocean alkalinity enhancement (OAE) to remove atmospheric CO₂. Laboratory experiments show rapid dissolution of reactive fractions, releasing alkalinity and enabling CO₂ sequestration of ~297 g/kg for LKD and ~88 g/kg for CKD. Global potential reaches 8.7 Mt CO₂/yr for LKD and 25 Mt CO₂/yr for CKD. Residual calcite may provide additional sequestration, but deployment risks elevated turbidity, highlighting the need for careful application to minimize ecological impacts.
Forest-based mitigation potential by country across CO₂ price scenarios in 2050 (Source)WEB POSTSShare Carbon Removal Updates REPORTSCumulative CDR market commitments (ktCO2) (Source)UPCOMING EVENTSJanuary 2026February 2026DeCarbon | 24-26 February 2026 | CopenhagenMarch 2026We have curated a “Carbon Removal Events Calendar.” Explore and stay informed about upcoming events, conferences, and webinars on Carbon Dioxide Removal technology. Sync specific events / all events to your default calendar to ensure you never miss out on important CDR updates. Carbon Removal Events Calendar Add our Carbon Removal Events Calendar to your default calendar in 2 ways: Head to this link: https://teamup.com/kshqbfhrqkw36sxymd Sync specific event: Click the event → menu (≡) → Share → choose your calendar → Save. Or sync all events: Menu (≡) → Preferences → iCalendar Feeds → Copy URL → Add to your calendar settings → Subscribe. JOB OPPORTUNITIES“The Carbon Dioxide Removal team coordinates overall science-based, measurable, and scalable sustainability investments and outcomes across the company – engaging with business groups on the environmental impacts of business operations and positive environmental outcomes resulting from technology and policy development.”
“The Alaska Future Ecology Institute (AFEI) is a nonprofit organization committed to rigorous scientific testing and responsible implementation of Arctic Rewilding as a nature based solution to mitigate climate change.”
“Climate Impact Partners delivers solutions for climate action. We are carbon market specialists and a go-to partner for every stage of the net zero journey.”
“Atoco, Inc. is a startup company founded by the distinguished scientist Prof. Omar Yaghi, the inventor of MOF and COF chemistry. Atoco is currently working on technologies in the fields of atmospheric water harvesting and CO2 capture. Learn more about Atoco.”
“Goodcarbon empower leading companies to achieve their net-zero goals with confidence through high-integrity Nature-Based Solutions (NbS).”
“CarbonRun is an international climate tech company headquartered in Nova Scotia, Canada. CarbonRun is the pioneer and world leader in river alkalinity enhancement (RAE), a new form of carbon dioxide removal (CDR) that was founded in river restoration technology.”
“[C]Worthy is a Focused Research Organization operating in partnership with Convergent Research. We develop science-backed tools for Monitoring, Reporting, and Verification (MRV) by adapting advanced oceanographic models to quantify carbon removal and assess ecosystem impacts with scientific credibility.”
“Research Fields:Biogeochemical Cycles; Carbon Sequestration;Ocean Acidification; Iron Cycle; Diatoms;Coccolithophores; Plankton Ecology;Paleorecontructions”
“AIRCO is a world leader in carbon conversion technology, paving the way to global energy security by transforming CO₂ into a valuable resource. Its proprietary AIRMADE™ Technology is an adaptable platform that allows any industry to efficiently produce high-demand, fully-formulated synthetic fuels from waste CO₂ and hydrogen.”
“Living Carbon is a public benefit company with a mission to fight climate change by transforming marginal land into high-value environmental assets. Our team specializes in restoring abandoned mineland and degraded agricultural land into diverse, thriving forests.”
Looking for your dream job in CDR? There are 625 jobs available *right now*: check them all out at: CDRjobs Board
PODCASTSSilicates vs. Carbonates: How the 1996 IPCC Report Created Enhanced Rock Weathering Path Dependency—w/ Dr. Tyler Kukla, CarbonPlan | Reversing Climate Change | 382: Silicates vs. Carbonates: How the 1996 IPCC Report Created Enhanced Rock Weathering Path Dependency—w/ Dr. Tyler Kukla, CarbonPlan Reversing Climate Change 59:32 |
“Some decisions we don’t expect to have big consequences. And yet, sometimes you wake up thirty years later in a world deeply altered by that little moment. Today’s show is about when that happens in science.Dr. Tyler Kukla is a Research Scientist at CarbonPlan, one of carbon removal’s preeminent watchdog nonprofits. He returns to the show to explore how a conservative estimation of how much carbon returns to the atmosphere after agliming with carbonate rock (all of it) in the 1996 IPCC report has led us into a commercial carbon removal future that focuses almost entirely on silicate rock.This isn’t a story about whether silicates or carbonates are better for enhanced weathering (it really depends upon a number of geographic factors and design decisions around system boundaries and additionality), but about how some good faith placeholders can reify to such an extent that they do so much more than they were ever expected to.”
How Switzerland is Pioneering CO2 Infrastructure - with Sophie Wenger | The CDR Policy Scoop | How Switzerland is Pioneering CO2 Infrastructure - with Sophie Wenger The CDR Policy Scoop 28:03 |
“In this episode of The CDR Policy Scoop, Sebastian Manhart and Eve Tamme are joined by Sophie Wenger, Climate Policy Officer at the Federal Office for the Environment, for a deep dive into Switzerland’s approach to scaling carbon capture and removal.Recorded on January 12, the conversation explores how Switzerland is developing a holistic strategy for CCS and CDR, with a strong focus on CO₂ transport infrastructure as the key enabler for scale. Sophie explains why transport is often the missing link in national CDR strategies and why getting regulation right is both technically and politically challenging.The episode also unpacks the main regulatory sticking points around CO₂ transport in Switzerland, what lessons other countries can draw from the Swiss experience, and how infrastructure planning, cross-border cooperation, and long-term climate targets need to align to unlock durable removals at scale.”
Biochar & Future of Carbon Credits | Carbogenics | Biochar and the Future of Carbon Credits - with Grain Ecosystem, Carbonfuture & Puro.earth Carbogenics Episode |
“In the latest episode of the carbogenics podcast, our Co-Founder & CCO Jason E. Dodier joins Sebastian Manhart (Carbonfuture) and Benno Fuchs (Puro.earth) for a conversation led by Leah Herrgen on what it takes to build credible, scalable carbon removal systems.”
YOUTUBE VIDEOS72 hour project - Let’s send this Launchpad team to Carbon Unbound! | Tito - AirMiners Local Ocean Fertilization | ToSaveTheWorld “Peter Fiekowsky, along with Brian von Herzen and Robert Tulip, favors research into spreading iron into the ocean, thereby getting phytoplankton to increase and remove CO2, cooling the planet.”
Biochar and the Case for Carbon Removal | Western Washington University “Biochar is an alternative use for biomass that may otherwise burn or decay, releasing multiple greenhouse gases. The process of creating biochar locks carbon in a more stable form, keeping it in soils or other materials like concrete for hundreds to thousands of years. Biochar does occur naturally, and one of the oldest documented human uses dates back over 2,000 years. Fast forward to the 2018 Intergovernmental Panel on Climate Change Special Report, that in order to limit warming, reducing emissions alone would not be sufficient; there was an additional need to remove CO2 from the atmosphere and existing carbon cycles. So began a rapid evolution of an industry which in 2020 transacted 18,000 metric tonnes of stored carbon dioxide and grew to 43.5 million tonnes as of January 2026 (CDR.fyi). We will dive into the science of biochar, the complexities of carbon credit markets, and the “boots on the ground” stories of navigating commercial deployment. From project feasibility to equitable scaling, we will discuss what it takes to turn biomass waste into a powerful tool for climate change mitigation.”
Leveraging African Innovation for Marine Carbon Dioxide Removal | Carbon to Sea “Leveraging African Innovation for Marine Carbon Dioxide Removal” panel conversation, held at the Africa Ocean-Climate Solutions Pavilion during the 2025 Africa Climate Summit 2 in Addis Ababa, Ethiopia.”
Risks and Long-Term Liabilities of Subseabed Carbon Sequestration | European Marine Board “This edition focused on the “Risks and Long-Term Liabilities of Subseabed Carbon Sequestration” linked to EMB’s Future Science Brief No. 13 ‘Monitoring, Reporting and Verification for marine Carbon Dioxide Removal’, with a presentation by Gabriela Argüello.”
A Practical Guide to Low Carbon Construction - Lesson 1 | St Albans Greener Together “The University of Hertfordshire delivered this course - A Practical Guide to Low Carbon Construction - in 2025 as part of St Albans Greener Together. This is lesson 1 of 6 lessons.”
Decarbonising Concrete With Carbon-Neutral Climate Tech | Tom Raftery: Sustainability & Climate Talks “In this episode of the Climate Confident Podcast, I’m joined by Ana Luisa Vaz, VP of Product at Paebbl, to unpack one of the most overlooked climate challenges hiding in plain sight: cement and concrete.”
Weekly Carbon Removal Updates from 12 January - 18 January 2026 | Carbon Removal Updates BulletinDEADLINESFollow us on:Twitter | Bluesky | LinkedIn | YouTube | Substack | Podcast 1 | Podcast 2
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