Schlagwort: BECCS

Elwee (2022): Advocating afforestation, betting on BECCS: land-based negative emissions technologies (NETs) and agrarian livelihoods in the global South

Pamela Mc Elwee IN: Journal of Peasant Studies, 2022

Negative emissions technologies (NETs) for carbon dioxide removal (CDR) are increasingly important responses to achieve global climate change targets, but to date, there has been insufficient attention to land-based NETs (including afforestation, biochar, and other measures) as an agrarian challenge for the global South. This paper explores the implications of different NETs for land, labor, capital, and politics in rural spaces and contributes to articulating agrarian climate justice by demonstrating the potentially unjust implications of many NETs. The paper concludes with how these measures might be designed to be less negative for rural peoples in future implementation.

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Borchers et al. (2022): Contribution to Net-Zero-2050 Germany – the portfolio of carbon dioxide removal options

Malgorzata Borchers, Daniela Thrän, Yaxuan Chi, Nicolaus Dahmen, Roland Dittmeyer, Tobias Dolch, Christian Dold, Johannes Förster, Michael Herbst, Dominik Heß, Aram Kalhori, Ketil Koop-Jakobsen, Zhan Li, Nadine Mengis, Thorsten B. Reusch, Imke Rhoden, Torsten Sachs, Cornelia Schmidt-Hattenberger, Angela Stevenson, Terese Thoni, Jiajun Wu, Christopher Yeates IN: Front. Clim. Sec. Negative Emission Technologies, doi: 10.3389/fclim.2022.810343

The authors investigated various near-to-market CDR options for Germany, which the authors present in the form of thirteen dedicated model concepts. They cover technical CO2 removal (two models of direct air carbon capture, i.e. DACC), hybrid solutions (six bioenergy with carbon capture technologies, i.e., BECC) and five options for natural sink enhancement, so-called Nature-Based Solutions (NBS).

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Microalgae CDR Road Map Workshop

October 13 4:00 – 6:00 PM PDT (UTC-7) or October 20 8:00 – 10:00 AM PDT (UTC-7)

Ocean Visions is developing a new road map on microalgae cultivation for carbon sequestration and is seeking experts in relevant fields to support the process by identifying information gaps and first-order priorities. Building on an existing set of five ocean-based CDR road maps, the microalgae road map is intended to catalyze global engagement on research and development. We will hold two scoping workshops, one at a Europe-friendly time and one at an Asia/Australia-friendly time. You may nominate yourself or someone else to participate in the workshops.

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Nature – Xu et al. (2022): Delayed use of bioenergy crops might threaten climate and food security

Siqing Xu, Rong Wang, Thomas Gasser, Philippe Ciais, Josep Peñuelas, Yves Balkanski, Olivier Boucher, Ivan A. Janssens, Jordi Sardans, James H. Clark, Junji Cao, Xiaofan Xing, Jianmin Chen, Lin Wang, Xu Tang, Renhe Zhang IN: Nature 609, 299–306 (2022). https://doi.org/10.1038/s41586-022-05055-8

The potential of mitigation actions to limit global warming within 2 °C might rely on the abundant supply of biomass for large-scale bioenergy with carbon capture and storage (BECCS) that is assumed to scale up markedly in the future. However, the detrimental effects of climate change on crop yields may reduce the capacity of BECCS and threaten food security, thus creating an unrecognized positive feedback loop on global warming. The authors quantified the strength of this feedback by implementing the responses of crop yields to increases in growing-season temperature, atmospheric CO2 concentration and intensity of nitrogen (N) fertilization in a compact Earth system model.

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Science-Bai & Cotrufo (2022): Grassland soil carbon sequestration: Current understanding, challenges, and solutions

Yongfei Bai and M. Francesca Cotrufo IN: Science, Vol 377, Issue 6606, pp. 603-608; DOI: 10.1126/science.abo2380

Recent studies show that plant diversity increases soil organic carbon (SOC) storage by elevating carbon inputs to belowground biomass and promoting microbial necromass contribution to SOC storage. Improved grazing management and biodiversity restoration can provide low-cost and/or high-carbon-gain options for natural climate solutions in global grasslands. The achievable SOC sequestration potential in global grasslands is 2.3 to 7.3 billion tons of carbon dioxide equivalents per year (CO2e year−1) for biodiversity restoration, 148 to 699 megatons of CO2e year−1 for improved grazing management, and 147 megatons of CO2e year−1 for sown legumes in pasturelands.

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Bio-oil Sequestration: Prototype Protocol for Measurement, Reporting & Verification

Carbon Direct and Eco-Engineers have developed a prototype protocol (“proto-protocol”) on bio-oil sequestration, the first in a series of science-led draft protocols. In collaboration with Charm Industrial, this analysis focuses on the carbon accounting, life-cycle analysis, and monitoring, reporting, and verification (MRV) foundations for a new carbon removal practice: bio-oil sequestration and geological disposal. It also includes an understanding of the energy requirements in biomass cultivation, harvesting, and conversion as well as a focus on subsurface characterization and operational excellence.

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Briones-Hidrovo et al. (2022): Assessing a bio-energy system with carbon capture and storage (BECCS) through dynamic life cycle assessment and land-water-energy nexus

Andrei Briones-Hidrovo, José Ramón Copa Rey, Ana Cláudia Dias, Luís A.C. Tarelho, Sandra Beauchet IN: Energy Conversion and Management 268, 116014, https://doi.org/10.1016/j.enconman.2022.116014

In this study, a dynamic life cycle assessment (LCA) and land-water-energy nexus are applied to a bioenergy system with carbon capture and storage (BECCS). The results show that harnessing residual forest biomass for electricity generation and carbon storage accomplished a positive climate performance.

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Even et al. (2022): Microalgae-based Bioenergy with Carbon Capture and Storage quantified as a Negative Emissions Technology

Catherine Even, Dyna Hadroug, Youness Boumlaik, Guillaume Simon IN: Energy Nexus, 100117, https://doi.org/10.1016/j.nexus.2022.100117

In this paper, microalgae are considered to produce bioenergy through firing. Emitted CO2 would then be captured and stored. This “negative emissions” process, called Microalgae-based Bioenergy with Carbon Capture and Storage (MBECCS), is quantified and compared to “classical” Bioenergy with Carbon Capture and Storage (BECCS) using plants.

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Jeswani et al. (2022): Environmental sustainability of negative emissions technologies: A review

Harish Kumar Jeswani, Djasmine Mastisya Saharudin, Adisa Azapagic IN: Sustainable Production and Consumption, https://doi.org/10.1016/j.spc.2022.06.028

This paper compares life cycle assessment (LCA) studies of the following options: bioenergy with carbon capture and storage (BECCS), biochar incorporation into soil, afforestation and reforestation, soil carbon sequestration, building with biomass, direct air carbon capture and storage (DACCS), enhanced weathering and mineral carbonation.

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Dooley et al. (2022): Carbon removals from nature restoration are no substitute for steep emission reductions

Kate Dooley, Zebedee Nicholls, Malte Meinshausen IN: One Earth, https://doi.org/10.1016/j.oneear.2022.06.002.

The authors estimate the global removal potential from nature restoration constrained by a “responsible development” framework and the contribution this would make to a 1.5°C temperature limit. They conclude that additional carbon sequestration via nature restoration is unlikely to be done quickly enough to notably reduce the global peak temperatures expected in the next few decades. Land restoration is an important option for tackling climate change but cannot compensate for delays in reducing fossil fuel emissions.

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