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Quantifying the shift of public export finance from fossil fuels to renewable energy.
Nat Commun
January 2025
Climate Finance and Policy Group, ETH Zurich, Zurich, Switzerland.
By providing guarantees and direct lending, public export credit agencies (ECAs) de-risk and thus enable energy projects worldwide. Despite their importance for global greenhouse gas emission pathways, a systematic assessment of ECAs' role and financing patterns in the low-carbon energy transition is still needed. Using commercial transaction data, here we analyze 921 energy deals backed by ECAs from 31 OECD and non-OECD countries (excluding Canada) between 2013 and 2023.
View Article and Find Full Text PDFEnvironmental impacts of restructuring the EU's natural gas supply and consumption: Learnings from the 2022 energy crisis.
iScience
January 2025
Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1, 8093 Zürich, Switzerland.
In 2022, the European Union put forward the REPowerEU plan in response to Russia's invasion of Ukraine, aiming at enhancing short-term energy security by diversifying imports and reducing natural gas demand while accelerating the deployment of renewable alternatives in the long term. Here, we quantify the life cycle environmental impacts of both REPowerEU's short-term measures, including the controversial extended coal-fired power plant operations, and how the first year of the crisis was managed in practice. We find that the policy measures' impact on greenhouse gas (GHG) emissions would be negligible, although they could have detrimental effects on other environmental categories.
View Article and Find Full Text PDFInfluence of the moisture and ash content in flue gases on the performance of adsorption processes using activated carbons to capture the CO for reuse in greenhouses.
Heliyon
January 2025
Department of Chemical Engineering, University of Almería, Carretera de Sacramento s/n 04120 La Cañada de San Urbano, Almería, Spain.
This work studies the influence of flue gas composition, its moisture and ash content, on the efficiency of a CO adsorption/desorption process to capture the CO from flue gases along with its subsequent reuse in greenhouse CO enrichment (Patent ES2514090). The influence of the inlet flow rate, moisture, and ash content were analysed. The experimental conditions were based on those that are achievable under real operating conditions, namely an inlet flow rate from 1.
View Article and Find Full Text PDFBehavior, mechanisms, and applications of low-concentration CO in energy media.
Chem Soc Rev
January 2025
Birmingham Centre for Energy Storage & School of Chemical Engineering, University of Birmingham, UK.
This review explores the behavior of low-concentration CO (LCC) in various energy media, such as solid adsorbents, liquid absorbents, and catalytic surfaces. It delves into the mechanisms of diffusion, adsorption, and catalytic reactions, while analyzing the potential applications and challenges of these properties in technologies like air separation, compressed gas energy storage, and CO catalytic conversion. Given the current lack of comprehensive analyses, especially those encompassing multiscale studies of LCC behavior, this review aims to provide a theoretical foundation and data support for optimizing CO capture, storage, and conversion technologies, as well as guidance for the development and application of new materials.
View Article and Find Full Text PDFPostharvest Practices and Farmers' Knowledge in Managing Maize Pests in the Eastern Cape Province, South Africa.
Insects
January 2025
Department of Biological and Environmental Sciences, Faculty of Natural Sciences, Walter Sisulu University, Mthatha 5117, South Africa.
This study aims to establish the pest management approach for pests of stored maize and determine the current control practices. Semi-structured questionnaires were administered to 77 smallholder farmers from 16 villages at King Sabata Dalindyebo local municipality in the Eastern Cape Province of South Africa. The results revealed that about 50% of the farmers had a formal education, the average farm size was 1 hectare, and they were predominantly cultivating yellow maize.
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