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AMADEUS es un proyecto europeo que investiga materiales y dispositivos de estado sólido para almacenar energía a muy alta temperatura. Usando aleados de silicio como materiales de cambio de fase se alcanzan calores latentes superiores a 1000 kWh/m3, propiciando la obtención de altísimas densidades energéticas. Dichos aleados suponen temperaturas de almacenamiento por encima de los 1000 ºC, muy por encima de las de los sistemas actuales de acumulación térmica. El artículo describe las actividades del proyecto y sus primeros resultados, explicando los principales retos de este nuevo sistema que combina la acumulación de energía en forma de calor en silicio fundido con dispositivos de estado sólido termiónicos y termofotovoltaicos para la posterior conversión en electricidad. AMADEUS is a H2020 project that researches on materials and solid-state devices for very high temperature energy storage and conversion. By exploring silicon-based alloys as new phase change materials (PCMs), latent heat higher than 1000 kWh/m3 is achievable, which implies a very high energy density. In addition, silicon-based PCMs lead to storage temperatures well beyond 1000 ºC, well beyond that of current state-of-the-art thermal energy storage (TES). This paper describes the project R&D activities and first results, and comments on challenges towards a new kind of systems combining latent heat energy storage in molten silicon with thermionic and thermophotovoltaic solid state heat-to-power conversion.

El siglo XXI es el siglo de la sostenibilidad ambiental y de la lucha contra el cambio climático. El cambio climático va a condicionar políticas públicas y acciones privadas en todo el mundo para alcanzar el objetivo de reducción de emisiones establecidos en los acuerdos internacionales (Kyoto, París). El objetivo de este trabajo es llevar a cabo una revisión de los efectos ya constatados del cambio climático en la región mediterránea, así como las medidas de adaptación y mitigación a corto-medio plazo para hacer frente al calentamiento global, como son la adaptación de los espacios urbanos (escala local), y la mejora de la enseñanza sobre este fenómeno. Según la Agenda 2030, y concretamente los Objetivos de Desarrollo Sostenible, el nº13 (“Acción por el clima”), establece dos acciones principales que los países deben culminar en 2030: la aprobación de leyes y planes de mitigación y adaptación, y la puesta en marcha de programas educativos. Finisterra, Vol. 58 N.º 122 (AOP) (2023)

Sweeping changes are beginning to transform energy scenarios around the world. The gas revolution, a renaissance in petroleum technology and exploration, and a chaotic but powerful movement toward the goal of low-carbon economies are three of the principal energy trends currently interacting with structural changes in the geo-economics of the Atlantic world to present new perspectives and opportunitiesfor the diverse actors in the ‘Atlantic Basin’. This article explores how changes in the energy landscape are contributing to a reassessment of the strategic horizon. The potential impacts of the shale revolution, deep-offshore oil, biofuels and other modern renewable energies on the geopolitics of the Atlantic Basin will be assessed, and the hypothesis that an Atlantic Basin energy system is now taking shape will be evaluated, along with an analysis of anticipated impacts.

[ES] La oxicombustión de combustibles sólidos es una de las alternativas tecnológicas más relevantes destinadas a conseguir la captura de CO2 en grandes plantas de generación. Si el proceso de oxicombustión se lleva a cabo en un reactor de lecho fluido, las posibilidades de aplicación se amplían a combustibles de bajo rango o residuos difícilmente aprovechables en condiciones de combustión en polvo, con la ventaja añadida del control de otras emisiones gaseosas (NOx, SOx). Y si adicionalmente se añade biomasa residual como parte de la mezcla aportada al reactor, el balance de emisiones de CO2 puede llegar a ser negativo. En la actualidad existen diferentes iniciativas tanto nacionales como internacionales de investigación en el campo de la oxicombustión, a pequeña escala de laboratorio, en plantas piloto y en tamaños semicomerciales, pero preferentemente centradas en sistemas de combustible pulverizado. También se desarrolla investigación en instalaciones de oxicombustión en lecho fluido, y dentro de ellos la caracterización de los procesos de ensuciamiento y corrosión asociados a la deposición de cenizas es un tema completamente novedoso. Este aspecto si que ha sido tratado ampliamente cuando se utiliza biomasa como combustible, la investigación se ha desarrollado convencionalmente para combustión con aire y no para las condiciones especiales de oxicombustión. La presente contribución pretende ofrecer una visión general y divulgativa sobre el estudio de los retos químicos que los materiales estructurales de las calderas han de sufrir en la futura aplicación comercial de la tecnología de oxicombustión de carbón y biomasa. [EN] Oxy-firing of solid fuels is one of the most relevant technological alternatives aiming at the CO2 capture in large-scale power plants. If oxy-firing is carried out in a fluidized bed reactor, the possibilities for application are extended to low-rank coals, difficult wastes, or biomass. The oxy-co-combustion of coal and biomass in circulating fluidized bed (CFB) reactors would result in a negative balance for the CO2 emissions. Several on-going national and international initiatives are focused in the research of oxyfuel- related issues, covering lab-scale plants, pilot plants and semicommercial units for pulverized fuel combustion. In particular, the field of ash fouling and corrosion under oxy-cofiring in fluidized beds remains almost completely open. Although there are available works in relation to the control of deposition rates in fluidized bed units, especially when biomass is the fuel, they have been developed under conventional combustion with air but not for the particular conditions occurring with CFB oxy-firing. The aim of the present work is to introduce an overview about the chemical challenges that oxycofiring implies over metal exchanger surfaces as well as over low-cement ceramic protection of combustor sidewalls, for a future commercial application of the technology. Este trabajo ha sido financiado por el Ministerio de Economía y Competitividad (Proyectos ENE2012-39114-C02-01 y -02). Peer reviewed

En este trabajo se analizan discursos del ámbito empresarial en los que se defienden propuestas ideológicas en el tema económico; en concreto, se analizan varios discursos en los que la Asociación Española de Productores de Energías Renovables (APPA, en adelante) responde a las críticas vertidas desde determinadas multinacionales del sector de la energía por las subvenciones públicas otorgadas a las empresas de energías renovables, en particular a los productores de energía fotovoltaica. Los resultados del análisis (pragmático-discursivo y argumentativo) revelan que el recurso principal que utiliza APPA para la defensa de este tipo de energías es la recontextualización de las críticas recibidas por parte de las multinacionales del sector de la energía, transformando estas críticas en una macroestrategia de deslegitimación de las energías renovables por parte de estas multinacionales. En el conjunto de los discursos analizados y del resto de estrategias argumentativas utilizadas, se puede observar, además, cómo esta deslegitimación es utilizada por APPA como prueba argumentativo-persuasiva para mostrar lo absurdo de tales críticas. Desde la perspectiva teórico-metodológica, este trabajo muestra la importancia en estos discursos de los recursos retóricoselocutivos; es decir, de aquellos capaces de activar marcos cognitivos determinados que evocan emociones, porque tanto transmiten intenciones como mueven a la acción. URN: http://nbn-resolving.de/urn:nbn:de:0114-fqs1203209 Forum Qualitative Sozialforschung / Forum: Qualitative Social Research, Vol 13, No 3 (2012): Cultural Analysis and In-depth Hermeneutics—Psycho-societal Analysis of Everyday Life Culture, Interaction, and Learning

Olive cultivation is an activity that has been present in the southeast of the Iberian Peninsula since ancient times. The way in which agricultural activities take place in the olive farms is a reflects the relationship between society and nature. However, these relationships are complex and there is no single form of connection between society and nature, but rather a dependence on both the natural and socio-economic context in which they develop. The society-nature relationship is influenced, on the one hand, by the social and economic framework in which it operates and, on the other hand, by physical and biological processes that determine how the transformations of natural resources are carried out. Understanding these interactions has required the development of a conceptual framework based on the ontological foundation of critical realism. This has allowed the integration, from the point of view of the complexity and transdisciplinarity, of different theoretical approaches that are related to the ecological economics. The aim of this investigation was the analysis of interactions between energy, material and economic processes in the agricultural system of the olive grove that, on the one hand, are conditioned by the natural characteristics of the territory and, on the other hand, driven by the social institutions involved in its development. The hypothesis assumes that currently an incipient change of energy consumption pattern exits, and consists in reducing the intensity of energy and material consumption in the society-nature relationship. The design of a consistent methodological approach that combines methodologies in a pluralistic framework through a relational link has allowed the integration of positivist and hermeneutic analysis tools for the representation of reality in its various dimensions. The results have confirmed the existence of an emerging trend, although minor and limited to certain processes of modernization, by which increased consumption of fossil energy is stopped and replaced by the use of renewable energy, while increases in production are achieved.

[ES] La aplicación de baterías acopladas a sistemas de conversión de energía renovable en las ciudades ayudará en gran medida a superar algunos de los retos tecnológicos para la electrificación de la red y el transporte, como la difícil accesibilidad a puntos de carga, y de coste, mejorando sus capacidades técnicas y haciendo que el sistema energético a nivel global sea más sostenible. Además, su aplicación tendrá un efecto inmediato en la salud de los ciudadanos debido a la disminución de las emisiones de gases de efecto invernadero a la atmósfera, así como otros contaminantes. A continuación, presentamos una revisión de los esfuerzos recientes para desarrollar nuevas tecnologías avanzados para las futuras baterías sostenibles. También destacaremos las estrategias actuales de reciclado de baterías que se aplican hacia un futuro con cero emisiones de carbono y basado en el concepto de economía circular. [EN] The application of batteries coupled to renewable energy conversion systems in cities will greatly help to overcome some of the technological challenges for grid electrification and transport, such as difficult accessibility to charging points, and cost, by improving their technical capabilities and making the energy system globally more sustainable. Furthermore, its implementation will have an immediate effect on citizens’ health due to the reduction of greenhouse gas emissions into the atmosphere, as well as other pollutants. Below is a review of recent efforts to develop new advanced technologies for future sustainable batteries. We will also highlight current battery recycling strategies that are being implemented towards a zero-carbon future based on the concept of the circular economy. Peer reviewed 4 figuras

The purpose of this report, firstly, is to deepen our understanding of the European food manufacturing firms, identifying what their main characteristics are in terms of size, profitability, sales volume, geographical distribution and their evolution in the last ten years. Secondly, this report aims to assess the environmental sustainability of European food manufacturing firms, and thirdly, to understand the scope of their international operations. Industries in the food manufacturing subsector transform livestock and agricultural products into products for intermediate or final consumption. The industry groups are distinguished by the raw materials (generally of animal or vegetable origin) processed into food products. The food products manufactured in these establishments are typically sold to wholesalers or retailers for distribution to consumers. As classified under North American Industry Classification System (NAICS 311), the Food Manufacturing sector, consists of nine subsectors. This publication has been funded by the project ECO2016-75909-P, PID2019-106725GB-I00, PID2019-107767GA-I00 to MCIN/ AEI/10.13039/501100011033 and FEDER/Junta de Andalucía-Consejería de Economía y Conocimiento/ Proyecto A-SEJ-291-UGR18.

The Ordesa y Monte Perdido National Park is located in the axial zone of the Central Pyrenees. It is the highest aquifer in Western Europe and is a protected area of international importance. Water is a key element for geodiversity and biodiversity. In the framework of the PIRAGUA research project, within the INTERREG POCTEFA program, the Spanish Geological and Mining Institute has evaluated the effect of climate change on the water resources of the National Park. To this end, numerical models have been developed to estimate the recharge to the aquifer based on the most likely scenarios of climate change. The joint analysis of the available scientific data allows several conclusions to be drawn: The increase in temperature and the decrease in snow cover caused by climate change significantly affect the quantity and quality of water. Recharge to aquifers decreases, due to less snow cover and less infiltration of water from snowmelt, causing a lower flow in springs such as the Cola de Caballo, during low water. This insufficient flow increases the concentration of pollutants. It aggravates the effects on water quality in aquifers, which are highly vulnerable due to the rapid velocities and short transit times of groundwater. These results will make it possible to propose management and adaptation measures to minimize the effects of climate change in such an emblematic and unique natural area as the Ordesa y Monte Perdido National Park. The video aims to present the scientific results obtained from the project to the general public. To this end, the presentation has been approached from a pleasant and intelligible perspective, facilitating the understanding of the concepts and ideas presented, without needing to be an expert. To facilitate the dissemination of the informative video, it has been published, in Spanish with subtitled versions in French and English, on the YouTube channel of the Spanish Geological and Mining Institute (IGME-CSIC), which is publicly accessible. The video has also been publicized on the social networks of both IGME-CSIC and the PIRAGUA project partners. Due to its entertaining and informative content, the video has been selected and presented by the Ministry of Ecological Transition at the Spanish Pavilion of the 9th World Water Forum, which took place on 21-26 March 2022 in Senegal.