 | | | | Links to recent scientific papers, web posts, upcoming events, job opportunities, podcasts, and event recordings, etc. on Carbon Dioxide Removal TechnologySubscribe to stay informed on carbon dioxide removal tech and support our independent reporting through a paid subscription.Support This Newsletter 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 HIGHLIGHTSFinland Launched Call For Proposals For BECCS Projects: Finland has formally adopted a government decree establishing the terms for a €90 million support scheme to build large-scale bio-based CO2 capture capacity, with the first competitive tender set to launch in Jan 2026 as the country moves to accelerate industrial BECCS and BECCU deployment. Durable CDR Hits 1M Deliveries Milestone: The durable carbon dioxide removal market has exceeded 1 million credits delivered, based on data from CDR.fyi. Credits have been delivered by 117 suppliers in 28+ countries to over 521 buyers in 35 countries. In terms of CDR pathways, the majority of the delivered credits came from biochar carbon removal, followed by BECCS, CO2 mineralization, marine CDR, enhanced weathering, and DACCS. 2025 CDR Jobs Report: CDRjobs’ annual CDR Salary Report, drawing on 4,000+ data points, found the median global salary falling to $100,000, down 13% from last year’s $115,000. Excluding U.S. roles drops the median to $70,000, a 30% decline. North America and Europe still host 88% of jobs despite rising activity in the Global South. Engineering, project management, and operations account for over a third of roles, on-site work is up, remote roles have halved, and pay transparency remains just 28%. Request for Proposals: ClimeFi has opened a dual-track RFP on behalf of Adyen to onboard top carbon removal suppliers and back early-stage climate innovation via Adyen’s 1% Fund. Applications close 13 Jan, with selections announced mid-Feb 2026, offering 500–4,000 tCO₂ per supplier. Scholarship Opportunity: CarbonCure has opened its 2026 Sustainability in Concrete Scholarship, offering multiple $2,000 awards to undergrad students in Concrete Industry Management programs to support future sustainability leaders. Deadline to apply: 31 January 2026 Report: Climeworks’ new report examined how much CO₂ can be sustainably removed by 2050, detailing physical and ecological limits, providing pathway estimates, and highlighting the need to combine nature-based and engineered solutions to meet Paris goals. Direct Air Capture Patents: ZeoDAC has been granted two U.S. patents for its breakthrough direct air capture technology that uses advanced zeolitic materials and a low‑energy desorption process to pull CO₂ from ambient air, strengthening its IP and supporting scalable, cost‑effective carbon removal solutions. Read on to unpack more updates: COMMERCIAL NEWS Share RESEARCH PAPERSAuthors: Cathryn A. Wynn-Edwards, Wayne D.N. Dillon, John Akl, Craig Neill, et al.Synopsis: This study reports Australia’s first Ocean Alkalinity Enhancement (OAE) field trial, conducted at a Tasmanian coastal site using continuous sodium hydroxide addition. The modified seawater plume was rapidly dispersed and successfully tracked, with measurable increases in alkalinity and reductions in pCO₂ near the release point. Although downstream signals were small, the trial demonstrates that coastal OAE impacts can be directly observed, supporting the potential of shore-based OAE as a scalable marine carbon dioxide removal approach.
Authors: Kalina C Grabb , Samantha Clevenger , Helen S Findlay , Helen Gurney-Smith, et al.Synopsis: This perspective paper argues that scaling mCDR will inevitably intersect with fisheries, aquaculture, and Indigenous communities, making early and meaningful engagement essential. The authors highlight risks of limited engagement, including opposition, misinformation, and ecosystem harm, and emphasize opportunities for co-developed, mutually beneficial approaches. Drawing on interdisciplinary experience, the paper offers high-level recommendations to guide inclusive, collaborative, and best-practice engagement as mCDR research advances.
Authors: Anusha Sathyanadh, Homa Esfandiari, Timothée Bourgeois, et al.Synopsis: This modeling study evaluates Bioenergy with Carbon Capture and Storage (BECCS) and Ocean Alkalinity Enhancement (OAE), applied individually and together, using the NorESM2-LM Earth system model. Results show largely additive carbon removal, with BECCS and OAE jointly offsetting emissions equivalent to ~5.4 Gt CO₂ per year by 2100, while maintaining their individual efficiencies. However, non-linear feedbacks, including reduced land and soil carbon sinks, highlight the need to account for Earth system interactions when designing effective CDR portfolios.
Authors: A. Lieber, C. Morrow, J. Stabile, K. HornbostelSynopsis: This review surveys CDR methods that extract CO₂ from air and ocean as a complement to point-source capture. CDR approaches are organized into four categories—marine and terrestrial, biological and nonbiological—explaining their underlying separation mechanisms. The paper compares methods by cost, scalability, storage duration, infrastructure needs, and operational footprint, providing quantitative insights to help researchers and decision-makers evaluate trade-offs and select suitable CDR pathways.
Authors: Migo-Sumagang, Maria Victoria, Aviso, Kathleen B., Foo, Dominic C. Y., Tan, Raymond R., Tan, Yin LingSynopsis: This study examines the large-scale deployment of enhanced weathering (EW) as a durable carbon dioxide removal strategy using a mixed-integer linear programming model to optimize EW supply networks. Results show that logistics and supply-chain emissions substantially reduce net CDR, with production and transport dominating the carbon footprint. The analysis highlights that improving rock processing efficiency and reducing production emissions are critical to maximizing EW’s net carbon removal potential at gigaton scale.
Authors: Kamasela, Shinichiro Fujimori, Tomoko Hasegawa and Saritha Sudharmma VishwanathanSynopsis: This study evaluates global soil organic carbon sequestration under three land-use pathways that account for climate and socio-economic change. Results show that a 2 °C climate pathway with large-scale bioenergy expansion could increase SOC stocks by ~7% (~9 Gt CO₂), while a sustainable food system scenario yields only modest gains. The findings highlight that SOC benefits depend strongly on land-use decisions, with bioenergy expansion and strategic land management offering greater mitigation potential than dietary shifts alone.
Authors: Jennie E. Rheuban, Heather H. Kim, Ke Chen, Ivan D. Lima, et al.Synopsis: This study assesses the suitability of ocean alkalinity enhancement (OAE) using machine-learning–based reconstructions of regional carbonate chemistry. By combining pH, calcite saturation state, ΔDIC/ΔTA, and CO₂ equilibration times into a suitability index, the analysis identifies seasons and regions favorable for OAE, particularly nearshore areas of the US Northeast Shelf. Results show that ocean transport processes can reduce OAE efficiency and slow equilibration, underscoring the importance of circulation in evaluating carbon uptake and storage potential.
Authors: Budi SantosoSynopsis: This paper examines the often-overlooked social implications of deploying Carbon Dioxide Removal technologies and smart infrastructure in the global energy transition. Using an interdisciplinary framework, it highlights risks such as resource competition, energy justice concerns, community rights, data privacy, labour disruption, and governance challenges. The authors argue that integrating social considerations through inclusive governance and robust policy design is essential to ensure a just, equitable, and resilient path to meeting Paris Agreement goals.
Authors: Siyu Li, Muhammad Haseeb, Zainab Tahir, Syed Amer Mahmood, Yahia Said, et al.Synopsis: This study analyzes land-use and land-cover change impacts on carbon sequestration from 1993–2023 using Landsat imagery and the InVEST carbon model. Large-scale afforestation under the Billion Tree Tsunami project increased forest area by 54% and substantially boosted carbon storage, while cropland and grassland losses and rapid urban expansion reduced carbon stocks. The findings highlight both the benefits of afforestation and the challenges posed by urban growth, underscoring the value of spatial analysis for climate mitigation planning.
Authors: Aviso, Kathleen B., Migo-Sumagang, Maria Victoria, Tan, Raymond R.Synopsis: This study models how government incentives can steer corporate purchases of carbon dioxide removal credits toward more durable, high-quality options. Using a bi-level optimization framework, the authors show that well-designed economic incentives can significantly increase durable CDR uptake while keeping industry costs substantially lower than under full government control. The results demonstrate the value of policy-driven portfolio design to improve the climate effectiveness of carbon markets.
Authors: Jun Liu, Shaokang Li, Qiang Ma, Shihao Chen, Yingjie Jiang & Zefan WangSynopsis: This study explores producing activated carbon from municipal sludge with amino modification for CO₂ adsorption, combining waste valorization with emission reduction. Results show that NaOH activation and optimized pyrolysis conditions (600 °C for 60 min) create well-developed pore structures and maximize adsorption performance. Under optimal conditions, the sludge-based activated carbon achieves a CO₂ adsorption capacity of 1.369 mmol g⁻¹, with best performance at 25 °C.
Authors: Chengzhen Zhou, Maodian Liu, Brad E. Rosenheim, et al.Synopsis: This study reconstructs Holocene to present-day organic carbon accumulation in Antarctic coastal polynyas (ACPs) to assess their role in Southern Ocean carbon sequestration. Despite covering only ~3% of the region, ACPs account for about 42% of modern organic carbon burial, with accumulation increasing ninefold since the Holocene due to warming-enhanced primary production. The results show that expanding open-water areas and ice-shelf melt have strengthened ACPs as rapidly growing carbon sinks with potential negative climate feedbacks.
Authors: Shuai Wang, Pardis Pourhaji, Dalton Vassallo, Sara Heidarnezhad, Suzanne Scarlata, Nima RahbarSynopsis: This study presents an enzymatic structural material (ESM) designed as a low-energy, carbon-negative alternative to conventional construction materials. Using a capillary suspension technique and enzymes to integrate calcium minerals into a sand–carbon matrix, ESM achieves high water stability and mechanical strength comparable to structural concrete. Notably, its production consumes CO₂ rather than emitting it, highlighting strong potential for sustainable, low-carbon construction.
Authors: Arezoo Taghizadeh-Toosi, Svend Vendelbo Nielsen, Katarina ElofssonSynopsis: This study assesses the potential of crop residue management to enhance soil organic carbon (SOC) across agricultural soils in 27 European countries using scenario-based modeling. Results show that treated residues sequester more SOC than untreated ones, even under rising temperatures that generally reduce SOC accumulation. The findings highlight residue management as a dual strategy for climate mitigation and energy use, while emphasizing the need for integrated, system-level and life-cycle analyses to guide sustainable SOC policies.
Authors: Hannah E Holmes, Jinsu Kim, Matthew J RealffSynopsis: This review examines how Process Systems Engineering (PSE) can address key challenges in scaling solid adsorption–based DAC, including high energy use, water management, sorbent degradation, and integration with variable renewables. It highlights recent PSE advances in process-informed sorbent selection, heat and water integration, and technoeconomic and life cycle viability assessments. The paper outlines workflows linking sorbent properties to system-level optimization and identifies future PSE priorities for robust, scalable DAC deployment.
Authors: Stewart, Tristen; Regier, Peter ; Hinson, Kyle E., et al.Synopsis: This study evaluates the capabilities and limits of current sensor technologies for monitoring, reporting, and verification (MRV) of marine carbon dioxide removal, focusing on ocean alkalinity enhancement. Mesocosm and field experiments show that accurately constraining pH uncertainty is critical for estimating total alkalinity, while pCO₂ uncertainty is less influential. Although sensors can detect mCDR signals under favorable conditions, modeling reveals substantial underestimation of pH changes, highlighting the need to pair in-situ sensors with biogeochemical models for robust MRV.
Authors: Fengchao Sun, Robert Rioux, Tim Suhrhoff, Wyatt Tatge, Boriana Kalderon-Asael, et al.Synopsis: This study evaluates enhanced rock weathering (ERW) using a whole-watershed basalt application experiment to assess how rapidly weathering products are exported to streams. Streamwater chemistry responded within weeks, showing increased alkalinity and elemental signatures of silicate weathering, with strong seasonal effects. Over two years, 9.5–11% of theoretical CDR potential was exported as alkalinity, demonstrating ERW’s rapid response, seasonal sensitivity, and promise for robust monitoring, reporting, and verification.
Authors: Yu-Ou He, Wen-Yi Zheng, Yong Liu, Weng-Da Zhang, et al.Synopsis: This study presents defective Cu₃-based metal–organic frameworks engineered for integrated direct air capture and photocatalytic CO₂ conversion. Creating unsaturated copper sites enhances CO₂ capture kinetics and capacity, enabling in situ photoreduction of captured CO₂ directly to ethylene without added photosensitizers. Defect sites also promote C–C coupling of intermediates, demonstrating a promising pathway for efficient direct air–to–fuel conversion materials.
WEB POSTSCarbon Removal Updates is a reader-supported publication. To support my work, consider becoming a paid subscriber. Get 20% off a group subscription REPORTSUPCOMING EVENTSDecember 20252026We 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 Yale Center for Natural Carbon Capture (YCNCC) and the Yale Department of Earth & Planetary Sciences (EPS) invite applicants for a full-time Postdoctoral Researcher position to begin January 1, 2026, or no later than July 1, 2026.The successful candidate will help build a marine carbon dioxide removal (mCDR) forecasting system to support monitoring, reporting, and verification (MRV) for marine-based carbon dioxide removal. The project is led by Prof. Elizabeth Yankovsky, Dr. Luke Gloege, and Prof. Noah Planavsky.”
“Can carbon dioxide removal turn back the clock on climate change? And if so, when? In this postdoc, you will delve into the crucial issue of the timing of CDR’s benefits, impacts, and risks.”
“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.”
“The role focuses on measurement, reporting, and verification (MRV) of CO₂ storage projects, contributing directly to Carbfix’ international growth and mission of climate recovery.”
“CURA is a climatetech startup building breakthrough electrochemical technology to decarbonize one of the world’s hardest-to-abate sectors: cement.”
“Carbon180 is a new breed of climate NGO on a mission to reverse two centuries of carbon emissions.”
“Alt Carbon is a deeptech science and data company, building agri infrastructure for climate action. We aim to make South Asia a hub for Carbon Dioxide Removal (CDR) through technology pathways like Enhanced Rock Weathering.”
“Capture6 help businesses, governments, and communities mitigate the risks of climate change through direct air capture.”
“Carbonova is a pioneering manufacturing startup leading the charge in sustainability, specializing in carbon capture technology to produce advanced carbon nanofibers.”
“The IPCC has identified that achieving the objectives of the Paris Agreement will require urgent and deep emission reductions combined with the scaled-up deployment of CDR. However, numerous gaps and uncertainties exist. CDR methods differ significantly in their side effects, permanence of storage, technical feasibility, scalability, environmental impacts, and social acceptance. Policy discussions often treat durable/technical CDR in aggregate, without sufficient differentiation between methods. A comprehensive and balanced analysis of different CDR methods is therefore needed to inform decision-making, ensuring that climate plans including CDR are grounded in science and reflect trade-offs, limits, and opportunities.”
“Climeworks is a leading high-quality carbon removal provider, combining decades of expertise in Direct Air Capture (DAC) technology with a holistic approach to carbon removal solutions.”
“OceanX is a nonprofit working to unlock the ocean’s sustainable potential.”
“Varaha is a tech startup at the intersection of climate, agriculture, and technology. We aredecarbonizing the atmosphere while ensuring longevity of investments in emission-capturing natural projects.”
Looking for your dream job in CDR? There are 580 jobs available *right now*: check them all out at: CDRjobs Board
PODCASTSFestive snowy forests - D’Souza | Reviewer 2 does geoengineering | Festive snowy forests - D'Souza Reviewer 2 does geoengineering 1:12:58 |
“What could be more festive than carbon storage in snowy evergreen forests?@geoengineering1 interviews Kevin Bradley D’Souza, a postdoctoral researcher at the University of Waterloo, about the real climate potential of reforesting Boreal forests. Kevin explains the crucial role these forests play in carbon storage, biodiversity, and permafrost protection, while noting that reforestation in the Boreal comes with important challenges. The conversation explores key factors such as albedo effects, wildfire risks, and the importance of Indigenous perspectives in forest management. Kevin also stresses the need for careful, multi-dimensional approaches to reforestation and urges caution around commercial forest-based carbon credits, given the scientific uncertainties that still remain.Papers discussed:Dsouza, K. B., Ofosu, E., Salkeld, J., Boudreault, R., Moreno-Cruz, J., & Leonenko, Y. (2025). Assessing the climate benefits of afforestation in the Canadian Northern Boreal and Southern Arctic. Nature Communications, 16(1), 1964. https://doi.org/10.1038/s41467-025-56699-9Dsouza, K. B., Ofosu, E., Boudreault, R., Moreno-Cruz, J., & Leonenko, Y. (2025). Substantial carbon removal capacity of Taiga reforestation and afforestation at Canada’s boreal edge. Communications Earth & Environment, 6(1), 893. https://doi.org/10.1038/s43247-025-02822-z“
“ In this episode, Lara Pierpoint talks with Phil Goodman, director of Microsoft’s carbon removal portfolio, about what it takes to structure offtake agreements for CDR, the challenges of fostering an emerging market, and some of the company’s most promising CDR partnerships.”
From Corporate Funds to Policy Signals and CDR Reality - Robert Höglund | This Week in Carbon | From Corporate Funds to Policy Signals and CDR Reality - Robert Höglund This Week in Carbon 56:17 |
“In this episode of This Week in Carbon, hosts Edward Smith and Rene Velasquez are joined by Robert Höglund, manager of the Milkywire Climate Transformation Fund, co-founder of CDR.fyi, and policy advisor on carbon removal (including SBTi and EU expert groups).Robert brings deep expertise from his NGO background to managing one of the most catalytic corporate climate funds, sharing candid insights on scaling impact across durable CDR, decarbonization, and nature protection.We discuss: • Robert’s journey: From Oxfam climate policy to co-founding CDR.fyi and leading Milkywire’s fund • Milkywire Climate Transformation Fund: $17M+ allocated across 60+ projects, catalytic pre-purchases, and internal carbon fees • 2025 CDR trends: VC slowdown, concentrated buyers (Microsoft dominance), and the gap between needed scale and financing reality • Corporate demand dynamics: Push for near-term operational net-zero, scope 1-2 incentives, and why long-term arguments fall flat with CFOs • Removals vs. reductions debate: Durable CDR for willful fossil continuation (e.g., aviation), cost-effectiveness of avoidance/nature, and balanced portfolios • SBTi net-zero draft critique: Steps forward on beyond-value-chain mitigation but delays and weakening of durable CDR requirements • EU 2040 target & policy signals: Massive potential demand via international credits, buyers club prospects, and risks of delayed supply • Outlook & incentives: Tough years ahead for durable CDR, the need for labels/claims restoration, and barriers that must fall to avoid lost momentum Essential listening for anyone shaping corporate climate strategy or tracking carbon removal markets—this episode cuts through the hype with pragmatic analysis and forward-looking views.”
The EU’s 2040 Climate Target: Credits and Credibility - with Lambert Schneider | The CDR Policy Scoop | The EU’s 2040 Climate Target: Credits and Credibility - with Lambert Schneider The CDR Policy Scoop 28:29 |
“The EU is preparing to allow the use of international carbon credits towards its 2040 target, a major policy shift. At the same time, the EU is also establishing a domestic carbon crediting scheme: the CRCF.But this raises some important questions:What kinds of credits should be eligible?How can the EU ensure integrity when engaging in international credits?How do the PACM and the CRCF compare in terms of integrity?To unpack what this all means in practice - from the design of the rules to which credit types could qualify - co-hosts Eve Tamme and Sebastian Manhart chat with the brilliant Lambert Schneider, Research Coordinator for International Climate Policy at Oeko-Institut, and a climate policy veteran.”
Dr. Phil Renforth and Dr. Mijndert Van der Spek on a harmonized framework for techno-economic analyses and lifecycle assessments of OAE | Plan Sea: Ocean Interventions to Address Climate Change | Dr. Phil Renforth and Dr. Mijndert Van der Spek on a harmonized framework for techno-economic analyses and lifecycle assessments of OAE Plan Sea: Ocean Interventions to Address Climate Change 49:58 |
“In this episode of Plan Sea, hosts Anna Madlener and Wil Burns sit down with Dr. Phil Renforth and Dr. Mijndert Van der Spek of Heriot-Watt University to unpack their newly published, harmonized framework for evaluating the viability of ocean alkalinity enhancement (OAE) pathways. Moving beyond lab-scale assumptions, their approach integrates techno-economic analysis (TEA) and lifecycle assessment (LCA) to allow the exploration of 54 known OAE variations and how they perform under future, decarbonized energy scenarios. The conversation highlights why real-world data, a cleaner energy grid, and feasibility assessments are important for determining which OAE pathways will deliver results in global scale carbon removal.”
How will this newly launched DAC facility hold up to a Canadian winter? | Carbon Curve Podcast The Carbon CurveEpisode 59 is with Rory Brown, Co-Founder & CEO at Airhive… 5 days ago · 1 like · Na’im Merchant “A chat with Airhive’s CEO on developing their technology, launching their new DAC operation in Alberta, and shooting straight on cost curves.”
YOUTUBE VIDEOSGGR Insights: MRV for sustainable and credible GGR in a global context | CO₂RE - The Greenhouse Gas Removal Hub “This is a recording of the fifth webinar in our “GGR Insights” webinar series. “MRV for sustainable and credible GGR in a global context” examines the need for robust monitoring, reporting and verification as part of the deployment of greenhouse gas removal (GGR).”
The story behind the first CDR Pavilion | Negative Emissions Platform “How do you build the first carbon removals pavilion at a COP?For COP30, more than 140 organisations joined forces to set up the first Carbon Removals Pavilion. The Negative Emissions Platform served as committee lead for the coalition, coordinating the effort to bring many more CDR events and voices into the UN climate space.This video looks back at how it all came about – from the first idea to a full pavilion on the ground.”
How Can Biochar Succeed in Latin America? | Carbonfuture “Central and South America has tremendous potential for biochar and durable carbon removal. In this webinar, held on Dec. 9, 2025, you’ll learn how Latin America is utilizing biochar to drive global climate impact – and what you need to know about the region’s emerging durable carbon removal market.”
The GigaTen Episode #13 December 2025 | Tree+ “In the 13th Episode of the GigaTen, as the number might suggest, there are headwinds in the CDR industry, but overall there is forward movement. Who said building a new industry would be easy? Listen in on this month’s GigaTen with Sebastian Manhart and Leila Conners.”
Why Carbon Dioxide Removal is Essential | Christian Breyer Global Tipping Points: Inside the 2025 Report | Climate Emergency Forum “Dr. Peter Carter and climate system scientist Paul Beckwith dive into why they believe many key tipping points have effectively already been triggered, from permafrost thaw and Arctic feedbacks to West Antarctic ice sheet collapse and the accelerating loss of coral reefs. They discuss the report’s call for an immediate, comprehensive transition away from fossil fuels, the failure of natural carbon sinks, and how sea level rise, extreme weather, and cascading system interactions could drive a “hyper‑emergency” for human societies.”
COP30: Kilaparti Ramakrishna and Hugh Hunt on the role of the oceans | Centre for Climate Repair “Hugh Hunt spoke to Kilaparti Ramakrishna (Director of the Marine Policy Center & Senior Advisor to the President on Ocean and Climate Policy at Woods Hole Oceanographic Institution) at COP30 Brazil last week.They discussed marine carbon dioxide removal, balancing action vs inaction, and the need to bring the public and local communities on board.”
From Shutdown to Scale-Up: What Federal and State Policy Means for Biochar in 2026 | Maureen Walsh | Grain Ecosystem “Recorded live on December 10, this session brings together Maureen Walsh, Executive Director of the U.S. Biochar Coalition (USBC), and Jason Dodier, Co-Founder & CCO of Grain Ecosystem, for a fast, practical briefing on the policy forces shaping biochar’s path in 2026.As federal and state agendas shift, biochar developers, producers, and land managers face new opportunities and new requirements. This conversation breaks down what’s changing, what’s at stake, and how to prepare.”
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