Monat: September 2023

Reports

Report: International Policy Framework for Blue Carbon Ecosystems

by Conservation International and IUCN; IUCN-2023-022, En

The International Policy Framework for Blue Carbon Ecosystems was designed to facilitate cooperation and alignment between international policy processes and support countries and other stakeholders in raising ambition and implementing commitments on the ground. It considers several key policy processes relevant to coastal blue carbon ecosystems and identifies opportunities to accelerate and enhance conservation, restoration and sustainable management of these ecosystems through integrated approaches.

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Reports

Report: Removing carbon responsibly: A guide for business on carbon removal adoption

World Business Council for Sustainable Development, 20 Sep 2023

This business guide provides practical direction for sustainability professionals to develop effective CDR investment strategies. It outlines seven key principles for responsible CDR investments and a decision-making framework empowering companies to evaluate different CDR methods based on company-specific preferences. A complementary excel tool is provided to help companies tailor their own assessments.  

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Peer-reviewed Publications

Zhai et al. (2023): Enhancing Aqueous Carbonation of Calcium Silicate through Acid and Base Pretreatments with Implications for Efficient Carbon Mineralization

Hang Zhai, Qiyuan Chen, Mehmet Yilmaz, Bu Wang IN: Environ. Sci. Technol. 2023, 57, 37, 13808–13817; https://doi.org/10.1021/acs.est.3c03942

Carbon dioxide (CO2) mineralization based on aqueous carbonation of alkaline earth silicate minerals is a promising route toward large-scale carbon removal. In this study, the authors designed and tested three distinctive routes to evaluate the effect of pretreatments under different pH conditions on aqueous carbonation, using amorphous calcium silicate (CS) as an example system. Pretreating CS with high concentrations (100 mM) of HCl (Route I) or NaOH (Route II and III) enhanced their carbonation degrees.

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Peer-reviewed Publications

Nature – Lei et al. (2023): Global iron and steel plant CO2 emissions and carbon-neutrality pathways

Tianyang Lei, Daoping Wang, Shijun Ma, Weichen Zhao, Can Cui, Jing Meng, Xiang Yu, Qiang Zhang, Shu Tao, Dabo Guan IN: Nature; https://doi.org/10.1038/s41586-023-06486-7

The highly energy-intensive iron and steel industry contributed about 25% of global industrial CO2 emissions in 2019 and is therefore critical for climate-change mitigation. Here the authors develop a CO2 emissions inventory of 4,883 individual iron and steel plants along with their technical characteristics, including processing routes and operating details (status, age, operation-years etc.). They identify and match appropriate emission-removal or zero-emission technologies to specific possessing routes, or what the authors define thereafter as a techno-specific decarbonization road map for every plant.

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Peer-reviewed Publications

Wang et al. (2023): Biochar carbon sequestration potential rectification in soils: Synthesis effects of biochar on soil CO2, CH4 and N2O emissions

Lin Wang, Dingjiang Chen, Lizhong Zhu IN: Science of The Total Environment, 167047, https://doi.org/10.1016/j.scitotenv.2023.167047

This study obtained the influence coefficient of biochar on soil GHG release relative to biochar carbon storage potential in soils under different environmental conditions, by literature statistics and data transformations.

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Media

Only 0.5% of Companies with SBTi Targets Have Purchased Carbon Removal

by Robert Höglund, cdr.fyi, September 21, 2023

„Only 32 companies that have committed or validated Science-based targets have purchased durable carbon removal, according to our analysis at the carbon removal market platform CDR.fyi. There is a great need to start scaling the carbon removal industry now. All companies need some level of carbon dioxide removal (CDR) to reach their net zero targets, but today, only a handful are taking on the responsibility to grow the sector.“

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Peer-reviewed Publications

Almaraz et al. (2023): Model-based scenarios for achieving net negative emissions in the food system

Maya Almaraz, Benjamin Z. Houlton , Michael Clark, Iris Holzer, Yanqiu Zhou, Laura Rasmussen, Emily Moberg, Erin Manaigo, Benjamin S. Halpern, Courtney Scarborough, Xin Gen Lei, Melissa Ho, Edward Allison, Lindiwe Sibanda, Andrew Salter IN: PLOS Climate, https://doi.org/10.1371/journal.pclm.0000181

Consumers, technology innovation, industry, and agricultural practices offer various degrees of opportunity to reduce emissions and remove CO2. However, a question remains as to whether food system transformation can achieve net negative emissions (i.e., where GHG sinks exceed sources sector wide) and what the capacity of the different levers may be. The authors use a global food system model to explore the influence of consumer choice, climate-smart agro-industrial technologies, and food waste reductions for achieving net negative emissions for the year 2050. 

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