 | | | | Links to recent scientific papers, web posts, upcoming events, job opportunities, podcasts, and event recordings, etc. on Carbon Dioxide Removal TechnologyThis service costs us around $XXXX each month and relies entirely on your donations. Help ensure its future by subscribing to a paid plan.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 HIGHLIGHTSTrump Administration Revokes EPA Endangerment Finding: U.S. President Donald Trump has revoked the 2009 “endangerment finding,” a U.S. Environmental Protection Agency ruling that determined greenhouse gas emissions endanger public health and welfare. The repeal removes the legal basis for federal emissions regulation, significantly weakening U.S. climate policy. Experts warn the shift creates new uncertainty for CDR, blurs distinctions between residual removals and offsets, and undermines the regulatory support and long-term demand signals needed to attract investment in durable carbon removal solutions. The decision is expected to face legal challenges. European Commission Launches Consultations on Post-2030 Climate Framework: The European Commission has launched two public consultations to help shape the EU’s post-2030 climate policy framework. The process will define national climate targets, possible flexibilities, and the role of carbon credits in achieving a proposed 90% greenhouse-gas cut by 2040. Consultations also cover the role of carbon removals and ways to support all regions and sectors in moving toward a climate-neutral economy. Citizens and stakeholders can submit input until 04 May 2026, guiding draft legislation due late 2026. Rainbow Opens Consultation on New Biochar Methodologies: Rainbow has launched a public consultation on two new biochar methodologies for distributed production using closed and open kilns. Stakeholders can submit feedback until 11 March to help refine the standards ahead of final approval. Report: Supercritical has released new market data indicating that biochar suppliers delivered 54% fewer tonnes of carbon removal than originally forecast, highlighting delivery gaps in one of the most established carbon removal pathways. CDR Messaging & Lexicon Guide: The Carbon Business Council and Potential Energy Coalition have released the Carbon Dioxide Removal Messaging & Lexicon Guide. Drawing on research and message testing, it provides clear, credible language for communicating carbon removal, helping the sector engage diverse audiences, build trust, and navigate complex conversations. Request for Proposals: goodcarbon has launched a global RFP to source up to 600,000 tCO₂ of nature‑based CDR credits for a major (unnamed) food & beverage company, with delivery targeted by 2030. Call for Proposals: Carbon to Sea is soliciting proposals for a four-month, $125,000 project to produce a technical report on integrating ocean alkalinity enhancement with municipal wastewater treatment. The report will assess potential risks, environmental and climate benefits, co-benefits for communities, and implementation opportunities. Deadline: 20 March 2026 Read on to unpack more updates: COMMERCIAL NEWS Share RESEARCH PAPERSAuthors: X. L. Zhao, H. Y. Zhao, J. W. Chen, H. L. Chen, X. Y. Yu, W. Jia, G. Chen, T. T. Xu, Y. Z. Yao, X. L. TangSynopsis: Using 668 field observations and a Random Forest model (R² = 0.86), this study maps litter carbon decomposition across Chinese forests at 1 km resolution. Litter C release rises toward lower latitudes, while net C sink peaks at mid-latitudes. From 2000–2018, C release increased and net sink declined, largely driven by shifting water availability, highlighting forest carbon cycling’s sensitivity to climate variability.
Authors: Ying Tu, Radine Rafols, Yangyang Xu, Natalia Butler, et al.Synopsis: This study models global adoption of enhanced rock weathering (ERW) using historical diffusion analogs and a coupled human–nature framework. Across five scenarios, ERW removes 0.35–0.76 GtCO₂/yr by 2050 and 0.7–1.1 GtCO₂/yr by 2100. While high-income countries lead early, India and Brazil dominate by mid-century. Low- and lower-middle-income countries could supply ~60% of removals by 2100, highlighting ERW’s equity potential.
Authors: Zeyan Liu, Huajie Ze, Bosi Peng, Charles B. Musgrave III, Mohammad K. Shehab, et al.Synopsis: This study introduces an electrified CO₂ capture system based on reversible manganese redox chemistry. MnO₂ is electrochemically activated to mineralize CO₂ and release it under oxidative potential, enabling air capture at 4.1 GJ per ton—lower than many liquid systems. The process shows high oxygen tolerance, 80% single-pass efficiency, >90% capacity retention over 1,000 hours, and scalable performance, though optimization challenges remain.
Authors: Aidan Byrne, Jake Williams, Nathalie PettorelliSynopsis: Using satellite observations (2007–2024), this study finds Congo Basin swamp forests expanded from ~195,000 to 222,000 km², reversing earlier drying trends. Increased wetness boosted forest productivity and methane emissions, but overall reduced CO₂-equivalent emissions by ~2 Mt per year. The results suggest the region is strengthening as a net carbon sink, with important implications for global greenhouse gas budgets.
Authors: Shashank Kumar Anand, Matteo Bertagni, Felipe Aburto, Salvatore CalabreseSynopsis: This study develops a soil-physics-based framework to quantify the fraction of rock powder surface area actively weathering in enhanced weathering (EW) soils. Soil pore structure, particle size, and mixing degree nonlinearly control water–rock contact, affecting weathering rates by up to two orders of magnitude. Integrating this scaling factor into EW models improves predictions of carbon removal, offering a mechanistic, efficient approach for continuum-scale simulations.
Authors: Benjamin SovacoolSynopsis: This study examines risk–risk tradeoffs in Arctic climate interventions in Alaska, based on expert interviews, site visits, and photography. Case studies of coastal protection in Utqiagvik ($360M) and boreal forest management for carbon removal ($50M) reveal that measures to mitigate flooding, erosion, and warming can create countervailing risks—permafrost thaw, wildfires, invasive species, and migration. Findings highlight complex risk dynamics, policy challenges, and the importance of local and non-governmental engagement.
Authors: Muhammad Yaseen, Waseem Razzaq Khan, Ping Li, et al.Synopsis: Mangroves, seagrass, and salt marshes are critical Blue Carbon Ecosystems (BCEs) for climate mitigation, yet quantifying their carbon sequestration remains uncertain. This review evaluates methods—from isotopes and direct sampling to remote sensing, modeling, and machine learning—highlighting limitations in cost, scalability, and GHG measurement. Standardized regional protocols exist, but a global framework is lacking. Advancing technology integration and ecosystem-specific data is key to reliable accounting and climate policy impact.
Authors: Ryo Dobashi, David T. Ho, Christa A. Marandino, Peter SchlosserSynopsis: This study quantifies air–sea gas exchange in the nearshore Baltic Sea using a ³He/SF₆ dual tracer method. Gas transfer velocity (k) was ~39% lower than in open coastal/offshore regions at similar winds, especially at high wind speeds and developing waves. Overestimation by existing parameterizations likely stems from limited fetch, wind–wave interactions, and surfactants, highlighting the need for accurate k estimates to assess coastal carbon dioxide removal efficacy.
Authors: Qinglian Deng, Yuqi Guan, Xiong Duan, Bin Chen, Kun ZengSynopsis: This study examines land use/cover change (1980–2020) and carbon storage in Sichuan Province, revealing stable “high-west, low-east” patterns with spatial heterogeneity. Land conversions like water-to-grassland and farmland-to-forest increased storage, while urbanization reduced it. Temperature and elevation dominated controls, with human activities playing moderate roles. Projections to 2050 show SSP1–1.9 largely stable, SSP2–4.5 and SSP5–8.5 causing notable declines, informing land-use and carbon sink management strategies.
Authors: Xinyu Li, Zhe Zhou, Heng Xiao, Jiangtao Li, Shouye YangSynopsis: This study evaluates coastal ocean alkalinity enhancement (OAE) using olivine, basalt, fly ash, and steel slag. Fly ash showed the fastest alkalinity release and highest projected CO₂ uptake (1.24 Tg/month), with low environmental risks and waste valorization benefits. Olivine and basalt had limited sequestration, while steel slag induced secondary carbonate formation. Findings highlight material-specific trade-offs, identifying fly ash as a promising, scalable, and cost-effective option for short-term coastal OAE deployment.
Authors: Mojtaba FakhraeeSynopsis: This Perspective highlights the synergy between blue carbon ecosystems and coral reef restoration. Carbon captured by mangroves and other coastal habitats can support reef recovery, linking climate mitigation with marine conservation. Aligning ecological benefits with innovative funding strategies offers a practical pathway for resilient coastlines and durable climate solutions.
Authors: Xinkai Wu, Hao Chen, Haibo Liu, Arup K. SenGuptaSynopsis: This study introduces a new direct air captur process using a hybrid polymeric ion exchanger (DeCarbon-HIX) that captures CO₂ and regenerates via waste brine, mineralizing CO₂ as CaCO₃. Unlike other thermal- or electrochemical DAC methods, it avoids geological storage, enabling rapid deployment in regions without storage infrastructure and offering scalable, safe carbon removal solutions.
Authors: Yuwen Fu, Wang Li, Zheng Niu, Fang Chen, Bing Zhang, Hailang Qiao, Li Wang & Jens-Christian SvenningSynopsis: Using 1-km GEDI data, this study finds China’s protected forests store 68.3 Mg C ha⁻¹ on average—~13% more than unprotected areas—with national parks and managed regenerating forests showing the highest gains. Integrating CMIP6 projections, strongly protected areas could sequester an additional ~600 Tg C by 2100 under SSP5‑8.5. Results highlight the climate mitigation potential of robust protection and optimized forest management.
Authors: Mengjie Han, Chenyi Yuan, Philippe Ciais, Daniel S. Goll, et al.Synopsis: This study evaluates a hybrid biochar–bioenergy crop system (BCBE) in China, combining biochar production with dedicated bioenergy crops to overcome biomass and CCS limitations. BCBE achieves 25.8 Tg CO₂ yr⁻¹ at $9.6 t⁻¹—far cheaper than BECCS ($90.9 t⁻¹)—while large-scale deployment could reach 1880 Tg CO₂ yr⁻¹. Findings highlight BCBE’s cost-effective potential for carbon removal, though uncertainties remain around plant retrofits, integration, and biomass supply.
Authors: Shiteng Zhang, Jiarui Liu, Zhongming Xiong, Xuan Chen, Yue Liu, Junjie Zeng & Yan ZhugeSynopsis: This review compares Ca- and Mg-based mineral carbonation for durable CO₂ sequestration and cement decarbonization across polymorphism, influencing factors, carbonation extent, products, applications, and sequestration efficiency. It links microstructure and mechanical performance to CO₂ uptake and outlines energy requirements, application windows, and research priorities to guide design of low-carbon, resilient cementitious materials.
Authors: Fazal Um Min Allah, Rodrigo Nogueira De Sousa, Elena Trim, Adriano da Silva Marques, Monica CarvalhoSynopsis: This study evaluates BECCS retrofits for pulverized coal (PC) and NGCC power plants in Brazil using the IECM model. Techno-economic assessments estimate LCOE, CCS costs, and CO₂ avoidance, while sensitivity analysis identifies key drivers such as capacity factor, CO₂ removal efficiency, and fuel prices. Results highlight BECCS’s potential to reduce emissions cost-effectively in existing thermoelectric plants, informing environmentally and economically viable decarbonization strategies.
Authors: Shinichiro Fujimori, Thanakon Sukuman, Shotaro Mori, et al.Synopsis: This study introduces the TPCC scenario, in which carbon dioxide removal and carbon capture and storage (CCS) are deployed transiently and phased out over time to address long-term sustainability concerns. Short-term renewable deployment and electrification, mid-term diversified CDR, and long-term synthetic fuels and hydrogen allow temporary negative emissions while minimizing land pressure and residual fossil emissions, offering a plausible framework for sustainable energy transitions.
Alkaline materials for coastal ocean alkalinity enhancement: A comparative study of natural silicates and industrial byproducts (Source)WEB POSTSShare Carbon Removal Updates REPORTSUPCOMING EVENTSFebruary 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: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“Vaulted is a waste management company that removes carbon. We take organic waste that can pollute our environment above ground and safely inject it ultra deep underground—permanently removing carbon from the atmosphere while protecting local land, air, and water.”
“Carbfix presents a revolutionary solution, converting CO₂ into stone within two years.”
“Carbon Gap exists to close the knowledge, policy, and ambition gaps that are holding back a carbon removal ecosystem that delivers real progress on climate change.”
“CDR at COP30 is hiring a Project Manager to lead the end-to-end delivery of the Carbon Removals Pavilion at COP31. This role owns the integrated delivery plan across governance, sponsorship, programme, design/build, logistics, hybrid delivery, communications, partnerships, and on-site operations.”
“This interdisciplinary PhD will combine experimental characterisation (School of GeoSciences, Prof Saran Sohi) with atomistic molecular modelling and simulation (School of Chemistry, Dr Valentina Erastova) to build a mechanistic understanding of biochar ageing in soils. The project will:(i) characterise fresh and soil-aged biochars to quantify changes in bulk composition and surface functional groups;(ii) develop and validate representative atomistic models of fresh and aged biochars; and(iii) use molecular simulations to probe how evolving functionality controls stability and interactions with key soil components, including minerals and dissolved organic matter.”
“Patch exists to put the planet back in balance by scaling unified climate action through software, market infrastructure, and culture-driven execution.”
“Equatic addresses one of mankind’s most pressing problems, climate change, by removing carbon dioxide (CO2) the atmosphere, while co-producing hydrogen (H2) as a green fuel, both at very low cost.”
“Arca is an Industrial Mineralization company that uses alkaline waste and byproducts to permanently remove carbon dioxide from the atmosphere.”
“The California Air Resources Board (CARB) is the state agency responsible for reducing greenhouse gas emissions in California. CARB leads the development and implementation of strategies to achieve carbon neutrality by 2045 and tracks progress toward that goal. Carbon dioxide removal (CDR) is a critical component of California’s carbon-neutrality pathway, as directed by Senate Bill 905 (Caballero, 2022).”
“Heirloom is building the next generation of direct air capture technology, combining first-of-a-kind industrial thermal systems, automated material handling, and control systems to safely operate and iterate on the process.”
“CREW’s technology and services make wastewater treatment cheaper and more efficient, while permanently sequestering CO₂.”
“Black Bull Biochar (BBB) is a growing UK company scaling the use of biochar, a carbon-rich material that improves soil health and removes carbon from the atmosphere.”
Looking for your dream job in CDR? There are 622 jobs available *right now*: check them all out at: CDRjobs Board
PODCASTSWhy Do We Labor in Carbon Removal? | Reversing Climate Change | 386: Why Do We Labor in Carbon Removal? Reversing Climate Change 50:06 |
“In today’s monologue show, host Ross Kenyon reflects upon the nature of vocation, aesthetics, and what it means to labor at something as hard as carbon dioxide removal, climate tech, and so many things adjacent.”
From solar cells in India to gigantic carbon sponges, with Paul Needham | The Impact Equation | From solar cells in India to gigantic carbon sponges, with Paul Needham The Impact Equation 35:06 |
“In this episode, we go deep into chemistry and mining with Paul Needham, CEO of ARCA, a company using carbon mineralisation to turn mine waste into giant, permanent carbon sponges. In 2025, Arca signed a 10-year deal with Microsoft to remove 300,000 tonnes of carbon from the atmosphere. Certain rocks naturally react with CO₂, pulling it out of the air and locking it away forever as stone. ARCA has found a way to massively accelerate that natural process, transforming mining tailings from an environmental liability into a climate solution. Paul’s no stranger to scaling impact: he previously built Simpa Networks, bringing pay-as-you-go solar to hundreds of thousands of people in rural India. In this episode we learn about scaling pay-as-you go solar in India and how carbon mineralisation turns mining waste into carbon removal at scale.”
“In this episode of The CDR Policy Scoop, Sebastian Manhart and Eve Tamme are joined by Jannick Buhl, Head of CCUS, CDR and Biomass at the Danish District Heating Association, to unpack what happened in Denmark’s highly anticipated CCS subsidy tender.Recorded in early February, the conversation examines why nine out of ten pre-qualified bidders withdrew from a tender worth nearly €4 billion, leaving just two final applications. Jannick explains why Denmark’s approach - requiring bidders to take responsibility for the entire CCS value chain, from capture to transport to storage - proved too risky for most projects under the current market conditionsThe episode dives into the key bottlenecks behind the withdrawals, including limited access to CO₂ storage, strict delivery timelines tied to Denmark’s 2030 climate target, and heavy penalties for delays. The discussion explores why Aalborg Portland, Denmark’s largest emitter, was still able to submit a bid, and what assumptions it is making around onshore storage availability.Sebastian, Eve, and Jannick also examine broader lessons for governments designing CCS and CDR funding schemes: whether tenders should cover the full value chain or be broken into separate components, how much delivery risk the state should absorb, and how tight climate deadlines can unintentionally undermine project development.The episode concludes with a forward-looking discussion on what Denmark might do next, how withdrawn projects could be revived under different tender designs, and what other countries can learn from Denmark’s experience as they roll out large-scale CCS and CDR support mechanisms.”
YOUTUBE VIDEOSScrubbing the Skies - The Vancouver Declaration | Institute for Responsible Carbon Removal “Scrubbing the Skies: The Role of Carbon Dioxide Removal in Combating Climate Change” is a webinar focusing on scientific, technological, legal, political, and justice-focused issues associated with carbon dioxide removal. It is hosted by Institute for Responsible Carbon Removal Co-Director Wil Burns.”
Global capacity building for Carbon Dioxide Removal Masterclass | Heriot-Watt Professional Academy | Heriot-Watt Online “This masterclass brings together leading experts to explain how Carbon Dioxide Removal (CDR) works in practice and what it will take to scale it responsibly.You’ll learn about key approaches including Enhanced Rock Weathering and Direct Air Capture and Storage, alongside emerging solutions shaping the sector. The session also explores the global skills, infrastructure and policy frameworks required to grow CDR, with insights from East Africa and South Asia.”
Enhanced Rock Weathering for Improved Smallholder Farmer Welfare | Energy Institute, University of Texas at Austin Navigating the Land Sector and Removals Standard | 3Keel “Navigating the final Land Sector & Removals standard is designed to help you understand the impact for agricultural supply chain action and reporting. The standard was published on 30 January and our experts have put together this practical session that goes through all the key points you need to know. Join 3Keel’s Head of Agriculture & Landscapes, Catherine McCosker, and Consultant Megan MacGillivray, who specialises in scope 3 FLAG sector carbon accounting.”
The Billion-Tonne Promise of Carbon Removal Isn’t Working | Ep244: Robert Höglung | Cleaning Up Podcast “This week on Cleaning Up, Michael Liebreich sits down with carbon removal insider Robert Höglund, CEO of Marginal Carbon, co-founder of CDR.fyi and architect of MilkyWire’s Climate Transformation Fund, for a deep dive into what’s working and what’s not in carbon dioxide removal and corporate climate action.Drawing on five years of hands-on experimentation funding everything from biochar to direct air capture and policy advocacy, Robert challenges the dominant “speed and scale” narrative. Instead, he makes the case for a new phase: prove and learn.Together, Michael and Robert unpack why the highest-impact climate interventions are often the least measurable, why corporate net-zero targets are more conditional than we admit, and what it will actually take to make carbon removal credible, scalable, and worth paying for.”
How much carbon removal and by when? | Tito - AirMiners How to Remove Your Carbon Footprint Properly (Not Just Offset It) | Remove Carbon Today “Remove Carbon Today exists to make certified, ex-post, durable carbon removal accessible to individuals worldwide with public registry proof provided within one month of purchase.”
CSEi Seminar Featuring Lou Derry (Cornell University) | UChicago Climate Systems Engineering initiative “In this talk, Louis Derry discusses how basalt weathering shapes long-term carbon storage and landscapes—and what that science tells us (and doesn’t yet) about using enhanced weathering as a viable CO₂ removal strategy.”
Harnessing Photosynthesis at Scale: A New Era of Ocean Carbon Removal | Imagination in Action “At Davos, Seema Gupta speaks with Ori Shaashua, Co-Founder of GigaBlue, about a breakthrough methodology called MFS that harnesses the ocean’s natural biological pump to remove carbon at scale. By deploying floating, nutrient-rich substrates that mimic natural dust storms, GigaBlue enables phytoplankton to capture CO₂ through photosynthesis and sink it to deep ocean sediments—powered only by sunlight and gravity.”
Charm Industrial - From Oil & Gas to Carbon Removal | Charm Industrial “Our approach to carbon removal provides new opportunities in energy communities for former oil & gas workers.Repurposing their incredible operational expertise and leveraging our team’s years of experience from refining and in-field oil & gas operations has helped accelerate Charm’s efforts to reduce cost per ton.In this interview, our COO JZ shares how we are focusing on areas like 24/7 continuous operations and disciplined asset management and the parallels he sees in his past experiences.”
This is CDR: The CDR Startup Journey - CRC 20226 Webinar #4 | OpenAir “This is the fourth webinar in the OpenAir Collective’s 2026 Carbon Removal Challenge monthly webinar series! We’re proud to present a panel with founders from two CDR startups, Greg Rau of Planetary Technologies (ocean alkalinity enhancement, Canada) and Silvia Pugliese of Norma (direct air capture, France). Hear about their journeys from academia, to founding, to prototyping, to demo plant (Planetary), to selling carbon removals to Milkywire (Norma) and Frontier (Planetary).”
Fireside chat: the Like-for-Like principle | Carbon Gap “We explore how the Like-for-Like principle can offer a clearer and more durable route to net-zero by matching different types of emissions to appropriate forms of carbon removal.Sylvain Delerce was joined by Beth Weed from Isometric, Ken Branson, Advisor to Senator Josh Becker in California, and Professor pierre friedlingstein from the University of Exeter. Together, they unpack the paper and discuss real-world pathways for turning the Like-for-Like principle into policy, with a focus on Europe.”
Weekly Carbon Removal Updates from 09 February - 15 February 2026 | Carbon Removal Updates BulletinDEADLINESFollow us on:Twitter | Bluesky | LinkedIn | YouTube | Substack | Podcast 1 | Podcast 2
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