Schlagwort: biochar

Wang et al. (2023): Role of biochar toward carbon neutrality

Liuwei Wang, Jiayu Deng, Xiaodong Yang, Renjie Hou, Deyi Hou IN: Carbon Res. 2, 2. https://doi.org/10.1007/s44246-023-00035-7

In this review, the authors highlight the huge potential of biochar application in different fields to mitigate as high as 2.56 × 109 t CO2e total greenhouse gas (GHG) emissions per year, accounting for 5.0% of the global GHG emissions. Soil applications of biochar as either a controlled-release fertilizer or an immobilization agent offer improved soil health while simultaneously suppressing the emissions of CH4 and N2O.

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International Biochar Initiative First Biochar Academy

June 19 – June 30, $2000

The 2023 Biochar Academy is the chance to immerse yourself in all things biochar. Led by IBI Board Chair Kathleen Draper and other Upstate NY biochar experts and practitioners as well as world-renowned experts from around the globe, this two week, in-person program will be held from June 19 – June 30th, 2023. It will provide a unique opportunity to quickly connect with and contribute to scaling the biochar industry. Applications will be accepted until 28 Feb. 2023.

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Nan et al. (2022): Minerals: A missing role for enhanced biochar carbon sequestration from the thermal conversion of biomass to the application in soil

Hongyan Nan, Ondřej Mašek, Fan Yang, Xiaoyun Xu, Hao Qiu, Xinde Cao, Ling Zhao IN: Earth-Science Reviews 234, https://doi.org/10.1016/j.earscirev.2022.104215.

This review focuses on roles of minerals in regulating carbon retention and stability, taking both processes of biochar formation and soil carbon sink into consideration. Carbon retention in biochar can be dramatically increased by adding exogenous minerals prior to pyrolysis, especially P, Si, Ca, Mg, and K containing materials, due to the chemical bonding (P-O-C, C-P, C-Si-C, etc.), the physical encapsulation, and the absorption of CO2 and CH4 by CaO or MgO.

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Funding Opportunity: The Biochar Demonstrator Flexible Fund

Deadline: 3rd February 2023

The Biochar Demonstrator Flexible Fund is open for bids to support early career researcher (ECR) gap-filling biochar projects, with awards of up to £40,000 (80% fEC) to cover salary and other research costs. All bids must be supported by an incumbent UK academic (PI). For more information please see the operational guidelines. Proposals should use the application form available on this page.

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Ganguly et al. (2022): Techno-economic and greenhouse gas emission assessment of carbon negative pyrolysis technology

Arna Ganguly, Robert C. Brown, Mark Mba Wright IN: Green Chemsistry 23, https://doi.org/10.1039/D2GC03172H

This study evaluates the economic and environmental performance of conventional fast pyrolysis (FP) and autothermal pyrolysis (ATP) systems with and without pretreatment of three kinds of biomass to produce sugars, phenolic oil, and biochar as valuable products while achieving carbon negative emissions.

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Puro Standard Biochar methodology edition 2022

on puro.earth

The new version of Puro Standard Biochar carbon removal methodology – edition 2022 – is ready to be used. During last 2.5 years, the Puro project members have been fortunate to gather feedback and learn from our global biochar producers, scientific experts, pioneering CORC buyers, as well as auditors in Europe, Australia and the Americas. All of these learnings are now captured in the updated methodology.

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Janssens et al. (2022): Negative erosion and negative emissions: Combining multiple land-based carbon dioxide removal techniques to rebuild fertile topsoils and enhance food production

Ivan A. Janssens, Dries Roobroeck, Jordi Sardans, Michael Obersteiner, Josep Peñuelas, Andreas Richter, Pete Smith, Erik Verbruggen, Sara Vicca IN: Front. Clim., 07 September 2022, Sec. Negative Emission Technologies, https://doi.org/10.3389/fclim.2022.928403

This paper elaborates on the idea to take these CDR technologies (biochar amendment, soil carbon sequestration) a step further and use them not only to drawdown CO2 from the atmosphere, but also to rebuild fertile soils (negative erosion) in areas that suffer from pervasive land degradation and have enough water available for agriculture. This way of engineering topsoil could contribute to the fight against malnutrition in areas where crop and livestock production currently is hampered by surface erosion and nutrient depletion, and thereby alleviate pressure on intact ecosystems.

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Werner et al. (2022): Potential of Land-Neutral Negative Emissions Through Biochar Sequestration

C. Werner, W. Lucht, D. Gerten, C. Kammann IN: Earth’s Future Vol. 10, Issue 7, https://doi.org/10.1029/2021EF002583

The autors assess feasible negative emissions contributions of alternative, more sustainable pyrogenic carbon capture and storage (PyCCS) based on land-neutral biomass production using biochar-mediated yield increases to maintain calorie production while realizing net CO2 extraction from the atmosphere. Simulations with a biosphere model indicate that such a land- and calorie-neutral PyCCS approach could sequester 0.44–2.62 Gt CO2 yr−1 depending on the assumed biochar-mediated yield increase achievable on (sub-)tropical cropland (15%, 20% and 30%, respectively).

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Policy brief: Soils Research to deliver Greenhouse Gas Removals and Abatement Technologies (SOILS-R-GGREAT)

UK GGR Research Programme

Through new research on global croplands SOILS-R-GGREAT researchers have estimated that arable farming has produced a loss of around 25 Gt carbon relative to the natural state in 1975 but, since that time, there has been an addition of about 4Gt of soil organic carbon (SOC) due to improved agricultural practices. Alongside agricultural management, approaches such as addition of biochar or enhanced weathering of silicate rocks on soils can improve carbon storage. Researchers present possible CO₂ sequestration from these two techniques in Sao Paulo State, Brazil.

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Jaschke and Biermann (2022): The policy discourse on negative emissions, land-based technologies, and the Global South

Gregor Jaschke and Frank Biermann IN: Global Environmental Change, Volume 75, July 2022, 102550, https://doi.org/10.1016/j.gloenvcha.2022.102550

This article analyzes the nascent policy discourse on negative emissions with a focus on land-based technologies (afforestation and reforestation, bioenergy with carbon capture and storage, biochar, soil carbon sequestration). The authors conclude that this policy discourse is largely centered in the Global North (mostly in the United States, the United Kingdom, and Germany), with only five organizations directly linked to the Global South. While the earlier policy discourse on negative emissions was linked to a more general “geoengineering” discourse, this link has loosened in the last years. Overall, in the documents that were studied, negative emissions technologies seem to become more accepted, and parts of the discourse shift towards deployment. 

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