 | | | | Links to recent scientific papers, web posts, upcoming events, job opportunities, podcasts, and event recordings, etc. on Carbon Dioxide Removal Technology.
If you find this work valuable, consider supporting us with a paid 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. COMMERCIAL NEWS Share RESEARCH PAPERSKar, S., Kim, D., Bin Mohamad Annuar, A., Sarma, B. B., Stanton, M., Lam, E., ... & Reisner, E. (2025). Direct air capture of CO2 for solar fuel production in flow. Nature Energy, 1-12.Synopsis: This study presents a dual-bed direct air carbon capture and utilization flow reactor that converts atmospheric CO₂ into syngas (CO + H₂) using sunlight, without the need for high temperatures or pressures. The reactor captures CO₂ via a silica-amine adsorbent, then releases and converts it to syngas with a silica/alumina-titania-cobalt photocatalyst under concentrated light. The system operates diurnally, capturing CO₂ at night and converting it to syngas during the day, using the oxidation of depolymerized plastics as the counter-reaction.
Fuhr, M., Dale, A. W., Wallmann, K., Bährle, R., Kalapurakkal, H. T., Sommer, S., ... & Geilert, S. (2025). Calcite is an efficient and low-cost material to enhance benthic weathering in shelf sediments of the Baltic Sea. Communications Earth & Environment, 6(1), 106.Synopsis: This study evaluates calcite and dunite for enhanced benthic weathering in the Baltic Sea as a marine carbon dioxide removal strategy. Laboratory experiments and modeling show that calcite achieves up to 10 times higher CO₂ uptake efficiency than dunite, making it the preferred material. Sequestration costs range from €82–462 per tonne for calcite, compared to €558–1920 for dunite. These findings may inform similar coastal carbon removal efforts globally in geochemically comparable regions.
Braun, J., Werner, C., Gerten, D., Stenzel, F., Schaphoff, S., & Lucht, W. (2025). Multiple planetary boundaries preclude biomass crops for carbon capture and storage outside of agricultural areas. Communications Earth & Environment, 6(1), 102.Synopsis: Six of nine planetary boundaries are currently exceeded, with land use changes contributing significantly. This study models the potential for BECCS using Miscanthus plantations while considering constraints from planetary boundaries like nitrogen flows, freshwater change, land system change, and biosphere integrity. The results show that BECCS potential under these constraints is minimal (0.1 gigatons CO₂ per year), with biosphere integrity being the most impactful factor. The study emphasizes the need for a holistic approach to balancing climate mitigation and ecosystem preservation.
Lehmann, N., & Bach, L. T. (2025). Global carbonate chemistry gradients reveal a negative feedback on ocean alkalinity enhancement. Nature Geoscience, 1-7.Synopsis: Ocean alkalinity enhancement shifts seawater carbonate equilibrium to sequester CO₂. However, it may affect calcifying organisms, like coccolithophores, by promoting increased calcification, potentially reducing alkalinity enhancement efficiency. Using satellite data, this study shows that the ratio of inorganic to organic carbon in coccolithophores is influenced by factors like nutrient stoichiometry and carbonate chemistry. Extreme alkalinity enhancement could reduce CO₂ removal potential by 2–29% by 2100, highlighting the need to consider biogeochemical feedbacks in evaluating ocean alkalinity strategies.
Guo, X., Liu, Y., Xie, T., Li, Y., Liu, H., & Wang, Q. (2025). Impact of Ecological Restoration on Carbon Sink Function in Coastal Wetlands: A Review. Water, 17(4), 488.Synopsis: This study explores carbon dioxide removal via enhanced weathering (EW), where crushed silicate minerals are added to soils. The majority (92.7–98.3%) of weathering products remain in the soil profile, termed the retarded fraction. Some products precipitate as carbonate minerals or adsorb to soil surfaces. While soil-based mass balance methods help quantify weathering rates, actual CDR can only be accurately determined by accounting for the retarded fraction, influencing long-term carbon storage estimates.
Shindell, D., & Rogelj, J. (2025). Preserving carbon dioxide removal to serve critical needs. Nature Climate Change, 1-6.Synopsis: Carbon dioxide removal is essential for net-zero pathways, particularly to offset hard-to-abate (H2A) emissions and overshoot. Analyzing least-cost 1.5°C scenarios, this study finds that 78 of 81 pathways require all available sustainable CDR for H2A emissions. Using CDR for easier-to-decarbonize sectors raises long-term costs and risks unattainable net-zero goals. Shifting CDR use exclusively to H2A emissions and overshoot is crucial to minimizing system-wide costs and ensuring climate targets remain feasible.
Favour, A. A. (2025). Direct Air Capture with Graphene-Based Adsorbents.Synopsis: Graphene-based materials show strong potential for enhancing Direct Air Capture technology due to their high surface area, tunable porosity, and stability. This study examines graphene oxide, reduced graphene oxide, and functionalized graphene frameworks, analyzing CO₂ capture mechanisms and material modifications that improve efficiency. Integration with renewable energy and economic feasibility are also explored. Findings highlight graphene’s promise for scalable, energy-efficient CO₂ removal, supporting net-zero goals.
Skrzypczak, D., Gorazda, K., Mikula, K., Mironiuk, M., Kominko, H., Sawska, K., ... & Chojnacka, K. (2025). Towards carbon neutrality: Enhancing CO2 sequestration by plants to reduce carbon footprint. Science of The Total Environment, 966, 178763.Synopsis: This research emphasizes plant-based CO₂ sequestration as a key strategy for carbon neutrality and climate change mitigation. It integrates process optimization, sustainable practices, precision agriculture, and bioengineering to enhance CO₂ absorption and ecosystem carbon storage. Using Life Cycle Assessment and Carbon Footprint Analysis, the study evaluates the environmental effectiveness of these strategies. Case studies highlight the importance of combining technology with sustainable farming practices to reduce carbon footprints and move toward global carbon neutrality.
Costa, C. R., de Souza, A. M., dos Santos, M. G. B., da Silva, I. G. R., Moraes, T. V., dos Santos, J. R., ... & Figueiredo, C. C. D. (2025). Stability and carbon sequestration potential of bamboo biochar. Biomass Conversion and Biorefinery, 1-16.Synopsis: Biochar is a durable carbon sequestration technology, but its effectiveness depends on pyrolysis conditions. This study examined how temperature and residence time affect carbon stability in bamboo biochars. Higher temperatures increased stability, while longer residence times had a greater impact at lower temperatures. Key stability indices showed strong correlation, suggesting they can be used interchangeably. These findings improve understanding of biochar stability and enhance carbon credit assessment methods.
Diekmeier, S., Reiter, K., Henk, A., & Friebe, C. (2025). Storage potentials for carbon-rich products in Germany–a database and outlook on final storage of products derived from negative emission technologies. Earth System Science Data Discussions, 2025, 1-30.Synopsis: To achieve the EU's net-zero emissions target by 2050, carbon dioxide removal and negative emissions technologies (NET) are crucial. The NETPEC project proposes using (photo-)electrochemical methods to convert CO₂ into stable products for long-term storage. The study identifies promising sites in Germany, focusing on repurposing mining areas for carbon storage. A database cataloging mining activities and storage potentials suggests that just 1% of these areas could provide significant storage capacity. This initiative offers a sustainable, cost-effective solution for large-scale carbon sequestration.
Barker, J., Voorhis, J., & Crotty, S. M. (2025). Assessing costs and constraints of forest residue disposal by pile burning. Frontiers in Forests and Global Change, 7, 1496190.Synopsis: Pile burning reduces wildfire risk in fire-prone forests, but cost estimates remain limited. This study quantified costs via USFS data and expert interviews, finding that machine pile burning costs 80% more than reported, while hand pile burning costs 135% more. Key cost drivers include road proximity and terrain. Pile burning also emits significant pollutants, including >1.7 million MT CO2 annually. Shifting residues to carbon-negative uses, supported by policy incentives, is recommended for climate and economic benefits.
Guo, X., Liu, Y., Xie, T., Li, Y., Liu, H., & Wang, Q. (2025). Impact of Ecological Restoration on Carbon Sink Function in Coastal Wetlands: A Review. Water, 17(4), 488.Synopsis: Coastal blue carbon ecosystems, including mangroves, seagrass beds, and salt marshes, contribute over 50% of marine carbon reserves despite covering less than 0.5% of the seafloor. However, human activities have severely impacted these ecosystems, limiting their carbon sequestration potential. Ecological restoration, focusing on restoring hydrological conditions, managing invasive species, and rebuilding habitats, has become crucial to enhance carbon sinks. This paper reviews the research on coastal wetland carbon sinks and restoration strategies, emphasizing the integration of carbon sink enhancement into ecological restoration efforts.
Elias, M., Yackulic, E., Duffy, K., Saksa, P., Sanchez, D. L., Pevzner, N., ... & Bracer, C. (2025). Carbon finance for forest resilience in California. Frontiers in Forests and Global Change, 7, 1507554.Synopsis: Restoring resilient forests in California’s American River watershed can generate up to $6,100 per acre in carbon revenue, potentially funding forest management. Using a dynamic performance benchmark (DPB) framework, this study finds that thinning and prescribed fire initially reduce carbon but ultimately lower wildfire emissions and boost storage by 35 tCO2e per acre. Biomass utilization adds 6–23 tCO2e. These treatments enhance carbon stability and highlight the role of innovative conservation finance in climate mitigation.
Cho, F. H. T., Aglonucci, P., Bateman, I. J., Lee, C., Lovett, A., Mancini, M. C., ... & Day, B. H. (2025). Resilient tree-planting strategies for carbon dioxide removal under compounding climate and economic uncertainties. Proceedings of the National Academy of Sciences.Synopsis: Nations worldwide have pledged to expand forests to meet decarbonization targets, but planting decisions—species, locations, and numbers—are fraught with uncertainty. Using the UK as a case study, we assess climate and economic uncertainties and explore decision-making methods. Findings show that optimal strategies differ based on emissions scenarios, with mismatches incurring high costs. Despite risks, tree planting remains a cost-effective carbon removal method compared to alternatives.
Jacobson, M. Z., Fu, D., Sambor, D. J., & Mühlbauer, A. (2025). Energy, Health, and Climate Costs of Carbon-Capture and Direct-Air-Capture versus 100%-Wind-Water-Solar Climate Policies in 149 Countries. Environmental Science & Technology.Synopsis: This study examines whether 149 countries can transition to 100% wind-water-solar (WWS) energy, reducing air pollution, CO₂ emissions, and energy insecurity. WWS cuts end-use energy by 54.4%, energy costs by 59.6%, and total social costs by 91.8%, with rapid payback times. In contrast, carbon capture (CC) and synthetic direct air capture (SDACC) raise social costs by $60–80 trillion per year, increasing pollution and energy use. Findings suggest prioritizing WWS over CC/SDACC for sustainable climate solutions.
WEB POSTSREPORTSIf you find this work valuable, consider supporting us with a paid subscription. We put a lot of time, effort and money into compiling this resource for you. UPCOMING EVENTS1) Mar 12, 20252) Apr 9, 20253) May 14, 2025
DC Climate Week | 28 April – 02 May 2025 | Washington, D.C.LAC Soil Carbon 2025 | 25-28 June 2025 | Reo de Janeiro (Brazil)We 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 GUIDELINES:Sync selected events to your default calendar in these simple steps:1) Click on the event you want to sync.2) Tap the menu icon (three vertical lines) at the top left.3) Choose 'Share.'4) Pick your default calendar.5) Save the event.Sync the entire Teamup Calendar to your default calendar with these simple steps:1) Tap the menu icon (three vertical lines) at the top right.2) Choose 'Preferences.'3) Click 'iCalendar Feeds.'4) Copy the URL shown for 'CDR Events / CDR General Guidelines / CDR Job Deadlines.'’5) Paste the URL into your default calendar settings.6) Click 'Subscribe' or 'Add Calendar.'
You can directly sync all Carbon Removal events to your default calendars by pressing the link below: Sync CDR Events to your Default Calendar JOB OPPORTUNITIES"The Environment, Policy and Social Initiatives team works with teams across Apple to apply the same level of innovation toward our social and environmental values as we do toward our products. Areas of work include Environment, Accessibility, Education policy and Racial Equity & Justice. Join the team that creates and leads initiatives demonstrating our commitment to leaving the world better than we found it.Are you passionate about scaling nature-based solutions and emerging removal technologies to combat climate change? As the Carbon Removal Lead on Apple's Environment, Policy and Social Initiatives team, you will lead the team driving development and implementation of projects and partnerships which remove otherwise unavoidable emissions from Apple’s scope 3 footprint.You will partner closely with internal teams as well as external partners and vendors to execute on Apple’s carbon removal commitments to meet its 2030 goal. This includes working with direct reports to assess the environmental and social impacts of project investments as well cross-functional engagement with finance, tax, legal and operational teams to execute on complex transactions globally."
"Meta’s mission is to give people the power to build community and bring the world closer together. We recognize the urgency of climate change and are committed to help tackle this global challenge. We are taking action by minimizing our emissions, using renewable energy and reducing our energy and water usage, protecting workers and the environment in our supply chain, and partnering with others around us to develop and share solutions for a more sustainable world."
"The Carbon Removal Alliance works to build a gigaton-scale carbon removal industry that is categorically good for the climate, economy, and people. Our members — innovative companies, buyers, and experts — represent billions of dollars of investment in climate technologies and virtually all of the permanent carbon removal deployed globally to date. We work to advance science-driven U.S. federal policy that supports carbon removal technologies that can bring carbon removal to gigaton scale."
"44.01 eliminates CO2 by turning it into rock. Their pioneering technology accelerates the natural process of CO2 mineralisation to remove captured CO2 permanently in less than 12 months."
"At neustark, we’re all in for one mission: permanently removing one million tons of CO2 in 2030, and even more every year beyond that. Why? It’s a no-brainer: we want to enable a bright future for all future generations on our planet. And for that, we need to reduce and remove CO2, now."
"Carbon Direct's mission is to enable organizations to reduce, remove, and utilize their emissions with carbon science."
"Cascade Climate works to accelerate progress in climate interventions that leverage Earth’s natural systems—from soils to oceans to glaciers—to stabilize our climate."
"The Faculty wishes to recruit a Postdoctoral Research Associate or Fellow to participate in European Space Agency (ESA) and EU Horizon (NextGenCarbon) projects, contributing cutting-edge research on the terrestrial carbon cycle. This joint ESA and EU Horizon funded post is available 1 April 2025 to 31 March 2028.The successful applicant will integrate Earth Observation (EO) data and land surface models, such as JULES, to accurately quantify carbon stocks and fluxes across European and global ecosystems. This research supports international carbon monitoring efforts, including the Global Carbon Budget, and informs EU and global climate policies. The candidate will leverage remote sensing to track forest disturbance (e.g. fire, harvesting, deforestation) and regrowth across the globe, building upon recent advances from the supervision team."
"Carbon Removal Canada is dedicated to advancing inclusive policies and innovations to scale up carbon removal."
"Brimstone is an innovative industrial startup with a proprietary, efficient, and deeply decarbonized process for producing Ordinary Portland Cement."
"Skytree enables a transition to a world with cleaner Air for everyone. We do this by developing and deploying smart technology that captures atmospheric carbon dioxide, enabling its use or storage to combat climate change and aid society and businesses around the world."
"InPlanet's mission is to remove 1GT of CO2 while regenerating tropical soils to create a livable Planet with nutritious food and healthy ecosystems for future generations."
"Octavia Carbon is the Global South's first Direct Air Capture company, dedicated to combating climate change by removing carbon dioxide from the atmosphere."
"Vaulted is an emerging leader in permanent carbon removal. As a Biomass Carbon Removal and Storage (BiCRS) solution, Vaulted delivers permanent, high quality carbon removal at scale through the geologic sequestration of carbon-filled organic waste."
"Greenlyte's breakthrough direct air capture technology captures CO2 from the atmosphere and produces hydrogen in parallel."
"SeaO2 uses their patented technology to achieve large scale carbon dioxide removal (CDR) from the ocean using an electrochemical approach."
"Carbon Gap is focused on addressing the knowledge, policy, and ambition gaps that are holding us back from a carbon removal ecosystem that delivers real progress on climate change."
Looking for your dream job in CDR? There are 688 jobs available *right now*: check them all out at: CDRjobs Board PODCASTS"Bipartisan support is key to scaling carbon management," Savita Bowman, ClearPath | Carbonsations | "Bipartisan support is key to scaling carbon management," Savita Bowman, ClearPath Carbonsations 32:59 |
"Joining us for this episode is Savita Bowman, Senior Program Manager in Carbon Management at ClearPath - a nonprofit that collaborates with public and private sector stakeholders to advance American innovation while working to reduce global carbon emissions. Savita discusses the importance of policy in scaling carbon management solutions and shares her perspective on where this industry may be headed in the future."
Could Canada be a global leader in the carbon removal industry? | Powering Sustainable Ideas | Could Canada be a global leader in the carbon removal industry? Powering Sustainable Ideas 21:28 |
"At the recent Energy Disruptors UNITE Summit, Damien Steel, CEO of Deep Sky, spoke about the promise of carbon removal technology, and why he believes Canada can become the global epicenter of the carbon removal industry."
Policy Voices | What is the cost of not doing Carbon Dioxide Removal? | Friends of Europe podcasts | Policy Voices | What is the cost of not doing Carbon Dioxide Removal? Friends of Europe podcasts 27:38 |
"This year, the European Union will be working on amending the European Climate Law. The importance of this law cannot be understated: it is the European Climate Law that defines the goal set out in the European Green Deal to become climate-neutral by 2050. Of the many ways possible to become climate-neutral, in this episode of Policy Voices we are focusing on what is a rather niche topic: carbon dioxide removal. Host Catarina Vila Nova speaks with Anna Costova, Senior Policy Analyst at Carbon Gap, an organization focusing on scaling up just and effective carbon dioxide removal. They talk about what carbon dioxide removal (CDR) is and disentangle the concepts surrounding this conversation, such as net zero and climate neutrality. Anna also explains the different ways CDR occurs – from trees to the most technologically advanced methods – and what is the cost of not doing CDR."
Eion: Removing carbon from agriculture | Wharton Tech Toks | Eion: Removing carbon from agriculture Wharton Tech Toks 36:33 |
"Please join us for this episode with Anastasia Pavolvic, the CEO of Eion. Eion helps agriculture companies reduce their carbon emissions through enhanced rock weathering, a technique of natural carbon capture well suited for agriculture among other industries. In this episode, we dive into how this solution actually works, the benefits to both farmers and others who claim the carbon credits as well as how the business model for Eion works. This is a fascinating episode on a promising technology that has the potential to make a real difference combating climate change."
YOUTUBE VIDEOSDirect Air Capture with Ocean Storage (DACOS) Methodology Webinar | puro_earth "Nasdaq-backed Puro.earth is the world’s first B2B marketplace, standard and registry focused solely on carbon removal. Aiming at climate and economic impact, its mission is to mobilize the world’s economy to reward carbon net-negative emissions. Puro.earth provides voluntary corporate buyers long-term carbon removal."
Talking high-tech artisan Biochar - Pawel Kuznicki, CEO, WasteX | Biochar Life "Pawel is a tech entrepreneur with a past experience in healthcare, fintech and e-commerce. Currently in climate tech, Pawel started WasteX in mid-2022 to tackle the climate crisis by developing biochar solutions for carbon removal and agricultural benefits. He lives in Indonesia, where most of the WasteX operations are based."
Whales, Humans, We All Need Iron! | Ocean Iron Fertilization | Liquid Trees "In this video Matthew and Daniel engage in a thorough discussion on Ocean Iron Fertilization, focusing on the restoration of whale populations and the potential for carbon sequestration. They provide insights into Matthew's research on whale ecology off the coast of South Africa and delve into the broader implications of iron addition to ocean waters. The conversation covers the effects of climate change, krill population health, and the role of marine organisms in the biological carbon pump. Both express the need for more scientific data to guide responsible and effective interventions in marine ecosystems."
Advancing CDR: From Start-Up to Scale-Up with Robert Höglund and Jason Dodier | Grain Ecosystem "The carbon removal space is evolving fast, and scaling durable solutions is more critical than ever. In this webinar, we sit down with Robert Höglund, co-founder of CDR.FYI and Climate Fund Manager at Milkywire, alongside Jason Dodier, co-founder and CCO of Grain Ecosystem, to explore how Carbon Dioxide Removal (CDR) technologies can move from early-stage innovation to large-scale implementation."
Who is the person behind every major carbon purchase? | Tito - AirMiners Steen Rasmussen: The Economics of Biochar Just Make Sense | Biochar Today "In this episode of The Biochar Show, host Meghan K. Lees interviews Steen Rasmussen of Ikigai Carbon, who discusses the innovative work being done in the field of biochar and sustainability. The conversation covers the mission of Ikigai Carbon, Steen's journey into biochar solutions, the community impact of their projects, and the transformative power of biochar in addressing environmental and socioeconomic challenges. Steen also shares insights on the challenges of scaling biochar solutions, the importance of carbon credits, and the unique aspects of biochar as a sustainable resource."
The GigaTen Ep. 3 February 2025 | Tree Media "Sebastian Manhart updates us on the CDR (carbon dioxide removal) industry in conversation with Leila Conners. The GigaTen is a newsletter that Sebastian posts monthly and Leila thought it would be an interesting conversation to update monthly as well. We think that CDR is important and a unifying pathway as it creates jobs, proposes new ways to manufacture materials and can remove CO2 as needed."
What’s pH Swing? The Science Behind Aeon Blue’s Carbon Capture Tech | Bite-Size Climate Tech "This time, we're diving into pH Swing Carbon Capture with Deóis Ua Cearnaigh, CTO of Aeon Blue. pH Swing is a clever chemistry trick used to capture CO₂ . But how does it actually work? We explore this concept using a fun baking analogy—just like making bread requires both sour (yogurt) and bitter (baking soda) for balance, pH Swing leverages shifts in acidity to trap and release CO₂ efficiently."
Teen CEO Seeks to Transform Farming with Biochar | Biochar Today "In this episode, we dive into the latest developments in the world of biochar. First, we spotlight a teenage CEO who’s making waves by using biochar to transform farming practices. Learn how this young entrepreneur is pushing the boundaries of sustainable agriculture.We also explore the role of biochar in soil remediation. With soil degradation on the rise, biochar is emerging as a powerful tool to improve soil health, boost microbial activity, and sequester carbon. What does the latest research say, and how can farmers and environmentalists apply these insights?"
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