CO2-removal News

Peer-reviewed Publications

Favaro et al. (2025): Nutrient-Rich Mineral-Associated Organic Matter Limits Carbon Storage Under Elevated Carbon Dioxide in a Low Phosphorus Eucalyptus Woodland Soil

Anna Favaro, Yolima Carrillo, Balwant Singh, Charles Warren and Feike A. Dijkstra, IN: Soil Biology & Biochemistry, www.doi.org/10.1111/gcb.70585

A rise in atmospheric CO₂ concentration can have positive or negative effects on soil organic carbon (SOC) pools, with likely impacts on soil nutrient availability, which can in turn, drive ecosystem-level impacts. Much of the soil nutrients are locked in the more stable mineral-associated organic matter (MAOM) pool compared to the more labile particulate organic matter (POM) pool, but how elevated CO₂ (eCO₂) affects these pools is unclear. In this study, the authors examined how 12 years of eCO₂ affected the POM and MAOM C, nitrogen (N), and phosphorus (P) pools at two different depths (0–10 and 10–20 cm) in a low P, native Eucalyptus woodland.

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Peer-reviewed Publications

Wynn-Edwards et al. (2025): Alkalinity enhancement with sodium hydroxide in coastal ocean waters

Cathryn A. Wynn-Edwards, Wayne Dillon, John Akl Uhril, Craig Neill, Harris Anderson, Hui Sheng Lim, Mathieu Mongin and Elizabeth H. Shadwick, IN: Research Square, https://doi.org/10.21203/rs.3.rs-7042100/v1

Carbon Dioxide Removal (CDR) is increasingly recognised as essential for achieving net zero emissions to limit the impacts of climate change. Ocean Alkalinity Enhancement (OAE) presents a scalable marine CDR (mCDR). Here the authors report on the first OAE field trial in Australia, conducted at a coastal site in Tasmania using continuous addition of aqueous sodium hydroxide (NaOH).

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Peer-reviewed Publications

Kuwae et al. (2025): Empirical analysis of project–purchaser dynamics in Japan’s blue carbon dioxide removal credit scheme

Tomohiro Kuwae, Yuka Suzuki and Masanori Furuya, IN: Research Square, https://doi.org/10.21203/rs.3.rs-7525613/v1

Carbon dioxide removal (CDR) and associated credit mechanisms are gaining prominence in carbon neutrality strategies, yet empirical evaluations of their sustainability remain limited. Here, the authors analyzed 61 blue carbon projects and 471 certified transactions under Japan’s J-Blue Credit scheme to examine the characteristics of projects and purchasers and their interrelationships.

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Peer-reviewed Publications

Presty et al. (2025): Global Collaboration in Carbon Dioxide Removal: Navigating a Fragmented Landscape

Romain Presty, Olivier Massol and Pascal Da Costa, IN: Clean Technologies and Environmental Policy, https://doi.org/10.1007/s40518-025-00280-x

As carbon dioxide removal (CDR) becomes an increasingly important component of net-zero strategies, understanding how scientific collaboration is structured globally is essential. This review applies bibliometric methods to map and analyze co-authorship networks, institutional communities, and thematic structures in CDR-related research from 2015 to 2024, using Web of Science data.

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Peer-reviewed Publications

Laktuka et al. (2025): Policy Coherence of the EU Carbon Removal Certification Framework: Integration of Carbon Farming in Climate and Agricultural Policy

Krista Laktuka, Ilze Luksta and Dagnija Blumberga, IN: ProQuest, www.doi.org/10.2478/rtuect-2025-0045

Adoption of the “Regulation (EU) 2024/3012 of the European Parliament and of the Council establishing a Union certification framework for permanent carbon removals, carbon farming and carbon storage in products” represents a significant policy shift, introducing a voluntary, harmonised EU certification framework. This study assesses the policy coherence of the CRCF Regulation and related EU regulatory and policy documents, examining how the certification framework for carbon removals, including carbon farming, is integrated into the EU’ broader climate and agricultural policy landscape. A qualitative content analysis was conducted on 31 EU documents, which were selected using snowballing sampling approach and nine search terms related to carbon removals, soil emissions and carbon farming. The identified text fragments were coded and grouped into nine thematic groups and qualitatively analysed to assess whether they reflect horizontal and vertical policy coherence or, indicate gaps and ambiguities.

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Peer-reviewed Publications

Zhang et al. (2025): Performance analysis of direct air capture-based renewable power-to-methanol (P2M) system in different regions of China: An annual intermittency investigation

Lanlan Zhang, Kai Han, Yongzhen Wang, Yibo Han, Tao Cui and Yuyao Xia, IN: Energy, https://doi.org/10.1016/j.energy.2025.139082

The direct air capture (DAC) integrated power-to-methanol (P2M) is a promising approach to reverse the carbon emission and energy demand. However, the intermittent character of renewable power and low response speed of DAC bring operation challenge. To evaluate the overall performance under different response time-scale, in this study, the operation strategies based on DAC stages, the number of its units are proposed from the view of reducing the energy storage of battery (strategy Ⅰ) or enhancing the amount of methanol production (in strategy Ⅱ) according to the fluctuating renewable power. Then the annual overall system performance is further distinguished in regions located at Northwest China, which own excellent renewable energy resource and have unsatisfactory wind, solar power curtailment rate.

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Peer-reviewed Publications

Kasidoni et al. (2025): Interrelations Between the EU ETS Carbon Price and the Associated CCU and CDR Technologies Research

Maria S. Kasidoni, Konstantinos P. Christopoulos and Maria D. Loizidou, IN: Environmental Management, https://doi.org/10.1007/s10666-025-10069-3

The European Union Emissions Trading System (EU ETS) serves as an environmental policy tool that aims to reduce carbon emissions, but the potential impact of novel carbon management technologies on the carbon price itself remains largely unknown. The aim of this study is to investigate the interrelations between carbon capture and utilization (CCU) and carbon dioxide removal (CDR) technologies and the EU ETS carbon price. To this end, the authors analyze the relevant detrended time series to examine short-term relationships between energy stock prices, carbon management technologies, and the EU ETS price.

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Peer-reviewed Publications

Jin & Cao (2025): Simulated carbon cycle response to ocean iron fertilization and artificial ocean alkalinization

Xiao-Yu Jin and Long Cao, IN: Advances in Ocean Science and Limnology, https://doi.org/10.1016/j.aosl.2025.100717

Ocean iron fertilization (OIF) and artificial ocean alkalinization (AOA) are two proposed ocean-based carbon dioxide removal methods to mitigate the effects of anthropogenic climate change. In this study, the authors use an Earth system model of intermediate complexity to compare the effects of OIF and AOA on the ocean carbon cycle and ocean biogeochemistry under the RCP8.5 high-emission scenario. In these simulations, both OIF and AOA are applied uniformly over the global ocean.

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Peer-reviewed Publications

Lu et al. (2025): Key role of river deltas in carbon sequestration through biospheric organic carbon burial

Taian Lu, Thomas S. Bianchi, Michael R. Shields, Naishuang Bi, Xiao Wu, Limin Hu, Xiaoyan Ning and Houjie Wang, IN: Geology, https://doi.org/10.1130/G53573.1

Biospheric organic carbon (OC) burial and petrogenic OC oxidation are fundamental controls in the regulation of global CO₂ concentrations. River deltas are among the largest OC sinks in the ocean, storing substantial amounts of terrestrial OC originating from both the biosphere and lithosphere. However, the extent of biospheric and petrogenic OC storage in deltas remains poorly understood. Here, the authors quantified biospheric and petrogenic OC burial rates in a dynamic river delta, the Yellow River Delta, using geomorphology and carbon isotopic analyses.

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Peer-reviewed Publications

Schinteie et al. (2025): Beyond carbonate biomineralization: Why prokaryote-driven CO₂ sequestration demands holistic evaluation

Richard Schinteie, Veena Nagaraj, Linda Stalker, Nai Tran-Dinh and David Midgley, IN: Frontiers in Bioengineering and Biotechnology, https://doi.org/10.3389/fbioe.2025.1690042

Microbially induced carbonate precipitation (MICP) offers a promising biological approach to sequester atmospheric CO₂ as stable mineral carbonates, mitigating climate change impacts. This perspective highlights the complexity underpinning prokaryote-driven biomineralization processes, emphasizing the necessity for holistic evaluation beyond simple carbonate formation.

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