Ponències/Comunicacions de congressos
http://hdl.handle.net/2117/3292
2024-03-28T23:23:33ZGeothermal anomaly identified under a dense urban area in the metropolitan region of Barcelona, Spain
http://hdl.handle.net/2117/371376
Geothermal anomaly identified under a dense urban area in the metropolitan region of Barcelona, Spain
Vázquez Suñé, Enric; Marazuela Calvo, Miguel Ángel; Criollo Manjarrez, Rotman Alejandro; Diviu, Marc; Mayer-Anhalt, Leia; Scheiber, Laura; Botey Bassols, Joan
During the drilling of the Barcelona Metro L9 line, at the Fondo station of Santa Coloma de Gramanet (Barcelona) a geothermal anomaly was detected, in which groundwater temperature was found to be up to 55°C. This anomaly was attributed to a rise of deep groundwater through some tectonic structures, in a similar way to other geothermal zones of Catalonia (Spain). This geothermal area is located under a dense urban area where the information of its hydrogeological and geothermal features is limited. Due to the economic benefits of geothermal energy to society, studying and understanding the dynamics of the geothermal system, as well as, assessing its potential for future exploitation of the resource in this dense urban area, are of great interest. In order to study the feasibility of a future energy exploitation of the geothermal resource, a study is being undertaken at local and regional scale. In the regional study, whose first results are presented in this work, the objective is to understand the hydrothermal operation of the system. To achieve this, different works have been performed as are: geological review, borehole drilling, petrology, borehole
logging, hydrochemical and isotopic assessment, thermography images, etc. This information has been integrated in numerical models of flow and heat transport.
2022-07-27T14:43:55ZVázquez Suñé, EnricMarazuela Calvo, Miguel ÁngelCriollo Manjarrez, Rotman AlejandroDiviu, MarcMayer-Anhalt, LeiaScheiber, LauraBotey Bassols, JoanDuring the drilling of the Barcelona Metro L9 line, at the Fondo station of Santa Coloma de Gramanet (Barcelona) a geothermal anomaly was detected, in which groundwater temperature was found to be up to 55°C. This anomaly was attributed to a rise of deep groundwater through some tectonic structures, in a similar way to other geothermal zones of Catalonia (Spain). This geothermal area is located under a dense urban area where the information of its hydrogeological and geothermal features is limited. Due to the economic benefits of geothermal energy to society, studying and understanding the dynamics of the geothermal system, as well as, assessing its potential for future exploitation of the resource in this dense urban area, are of great interest. In order to study the feasibility of a future energy exploitation of the geothermal resource, a study is being undertaken at local and regional scale. In the regional study, whose first results are presented in this work, the objective is to understand the hydrothermal operation of the system. To achieve this, different works have been performed as are: geological review, borehole drilling, petrology, borehole
logging, hydrochemical and isotopic assessment, thermography images, etc. This information has been integrated in numerical models of flow and heat transport.HEATSTORE: high temperature underground thermal energy storage
http://hdl.handle.net/2117/186847
HEATSTORE: high temperature underground thermal energy storage
Koornneef, Joris; Guglielmetti, Luca; Hahn, Florian; Egermann, Patrick; Vangkilde-Pedersen, Thomas; Sif Aradottir, Edda; Allaerts, Koen; Viveiros, Fatima; Saaltink, Maarten Willem
Thermal energy storage technologies need to be further developed and need to become an integral component in the future energy system infrastructure to meet variations in both the availability and demand of energy. The main objectives of project HEATSTORE are to lower the cost, reduce risks, improve the performance of high temperature (~25°C to ~90°C) underground thermal energy storage (HT-UTES) technologies and to optimize heat network demand side management (DSM). This is primarily achieved by 6 new demonstration pilots and 8 case studies of existing systems with distinct configurations of heat sources, heat storage and heat utilization. It will advance the
commercial viability of HT-UTES technologies and, through an optimized balance between supply, transport, storage and demand, enable geothermal energy production to reach its maximum deployment potential in the European energy transition. HEATSTORE is a project under the GEOTHERMICA – ERA NET Cofund and contributes to achieving the several objectives of accelerating the uptake of geothermal energy by 1) advancing and integrating different types of underground thermal energy storage (UTES) in the energy system, 2) providing a means to maximize geothermal heat production and optimize the business case of geothermal heat production doublets, 3) addressing technical, economic, market, environmental, regulatory and policy aspects that are necessary to support efficient and cost-effective deployment of UTES technologies in Europe. The 3-year project started in 2018 will stimulate a fast-track market uptake in Europe, promoting development from demonstration phase to commercial deployment within 2 to 5 years, and provide an outlook for utilization potential towards 2030 and 2050. The HEATSTORE consortium brings together 23 contributing partners (mix of scientific research institutes and private companies) from 9 countries.
2020-05-08T14:22:28ZKoornneef, JorisGuglielmetti, LucaHahn, FlorianEgermann, PatrickVangkilde-Pedersen, ThomasSif Aradottir, EddaAllaerts, KoenViveiros, FatimaSaaltink, Maarten WillemThermal energy storage technologies need to be further developed and need to become an integral component in the future energy system infrastructure to meet variations in both the availability and demand of energy. The main objectives of project HEATSTORE are to lower the cost, reduce risks, improve the performance of high temperature (~25°C to ~90°C) underground thermal energy storage (HT-UTES) technologies and to optimize heat network demand side management (DSM). This is primarily achieved by 6 new demonstration pilots and 8 case studies of existing systems with distinct configurations of heat sources, heat storage and heat utilization. It will advance the
commercial viability of HT-UTES technologies and, through an optimized balance between supply, transport, storage and demand, enable geothermal energy production to reach its maximum deployment potential in the European energy transition. HEATSTORE is a project under the GEOTHERMICA – ERA NET Cofund and contributes to achieving the several objectives of accelerating the uptake of geothermal energy by 1) advancing and integrating different types of underground thermal energy storage (UTES) in the energy system, 2) providing a means to maximize geothermal heat production and optimize the business case of geothermal heat production doublets, 3) addressing technical, economic, market, environmental, regulatory and policy aspects that are necessary to support efficient and cost-effective deployment of UTES technologies in Europe. The 3-year project started in 2018 will stimulate a fast-track market uptake in Europe, promoting development from demonstration phase to commercial deployment within 2 to 5 years, and provide an outlook for utilization potential towards 2030 and 2050. The HEATSTORE consortium brings together 23 contributing partners (mix of scientific research institutes and private companies) from 9 countries.Importancia de la reutilización de aguas usadas: ventajas y posibles impactos en los acuíferos
http://hdl.handle.net/2117/130834
Importancia de la reutilización de aguas usadas: ventajas y posibles impactos en los acuíferos
Candela Lledó, Lucila
La importancia de la reutilización de las aguas urbanas tratadas en la gestión integrada de los recursos hídricos constituye un aspecto de interés actual. La creciente demanda de recursos, las mejoras tecnológicas de los tratamientos aplicados, la minimización de los costes de infraestructuras y la reducción de descargas al medio ambiente, entre otros factores, han llevado a su creciente interés. Se presentan algunos de los usos ambientales más habituales de la reutilización y los posibles efectos que puedan derivarse de su aplicación en regadío, recarga de acuíferos por infiltración e inyección profunda. Aunque no existe un conocimiento absoluto de los efectos que pueden producirse en el sistema planta-suelo-agua, las condiciones y características del medio geológico donde se aplican y las tecnologías de tratamiento aplicadas a las aguas para su depuración son los factores principales de los procesos de atenuación de contaminantes.
2019-03-25T23:11:53ZCandela Lledó, LucilaLa importancia de la reutilización de las aguas urbanas tratadas en la gestión integrada de los recursos hídricos constituye un aspecto de interés actual. La creciente demanda de recursos, las mejoras tecnológicas de los tratamientos aplicados, la minimización de los costes de infraestructuras y la reducción de descargas al medio ambiente, entre otros factores, han llevado a su creciente interés. Se presentan algunos de los usos ambientales más habituales de la reutilización y los posibles efectos que puedan derivarse de su aplicación en regadío, recarga de acuíferos por infiltración e inyección profunda. Aunque no existe un conocimiento absoluto de los efectos que pueden producirse en el sistema planta-suelo-agua, las condiciones y características del medio geológico donde se aplican y las tecnologías de tratamiento aplicadas a las aguas para su depuración son los factores principales de los procesos de atenuación de contaminantes.Salinity problems in Mediterranean and island coastal aquifers in Spain
http://hdl.handle.net/2117/125185
Salinity problems in Mediterranean and island coastal aquifers in Spain
Custodio Gimena, Emilio
The Spanish coastal aquifers are often complex and bounded by or inside mountainous areas. Most of them are in Quaternary and Miocene littoral sediments or highly karstified carbonate formations, or in the case of the Canary Islands in volcanic formations. Along the Spanish Mediterranean coast and the Balearic and Canarian archipelagos coasts, 95 groundwater bodies have been identified, often including several aquifers. Some kind of marine salinization problems have been identified in 70 groundwater bodies (20 with generalized problems) but only a few aquifers have detailed, specific studies on sea water intrusion. Information on salinization is often based on scarce and occasional data.
2018-11-28T11:14:12ZCustodio Gimena, EmilioThe Spanish coastal aquifers are often complex and bounded by or inside mountainous areas. Most of them are in Quaternary and Miocene littoral sediments or highly karstified carbonate formations, or in the case of the Canary Islands in volcanic formations. Along the Spanish Mediterranean coast and the Balearic and Canarian archipelagos coasts, 95 groundwater bodies have been identified, often including several aquifers. Some kind of marine salinization problems have been identified in 70 groundwater bodies (20 with generalized problems) but only a few aquifers have detailed, specific studies on sea water intrusion. Information on salinization is often based on scarce and occasional data.Hydrogeological and geophysical characterization of fractured aquifer of Òdena (Barcelona, Catalunya)
http://hdl.handle.net/2117/116115
Hydrogeological and geophysical characterization of fractured aquifer of Òdena (Barcelona, Catalunya)
Himi, M; Rodriguez Fernández, D; Folch Sancho, Albert
The results of the geophysical survey reflects the presence of heterogeneity distribution of electrical resistivity values. This allowed to delimit the geometry of the three layers, as indicated by borehole logging. At the same time, it has been possible to highlight several zones with low electrical resistivity values in the central part of some profiles. These have been considered as fractured areas. In many cases, these areas of low resistivity fractures coincide with areas where the wells have registered low values of the electrical conductivity. This fact reveals the effect as preferential flow areas that have these fractures throughout the circulation system of the contaminant.
2018-04-10T12:21:25ZHimi, MRodriguez Fernández, DFolch Sancho, AlbertThe results of the geophysical survey reflects the presence of heterogeneity distribution of electrical resistivity values. This allowed to delimit the geometry of the three layers, as indicated by borehole logging. At the same time, it has been possible to highlight several zones with low electrical resistivity values in the central part of some profiles. These have been considered as fractured areas. In many cases, these areas of low resistivity fractures coincide with areas where the wells have registered low values of the electrical conductivity. This fact reveals the effect as preferential flow areas that have these fractures throughout the circulation system of the contaminant.Evaluación de las medidas de humedad de suelo generadas con datos disgregados de satélite a escala de parcela agrícola
http://hdl.handle.net/2117/114867
Evaluación de las medidas de humedad de suelo generadas con datos disgregados de satélite a escala de parcela agrícola
Fontanet Ambrós, Mireia; Fernández García, Daniel; Ferrer, Fernado; Rodrigo, G
El interés de medir la humedad de suelo a escala de parcela de cultivo mediante teledetección ha aumentado debido a la fácil disponibilidad de los datos y, que a diferencia de los sensores de humedad de suelo, no es necesario dedicar tiempo y dinero a la instalación y mantenimiento en campo. Estas medidas tienen una baja resolución espacial de 40 km. El algoritmo DisPATCh disgrega los valores de humedad de suelo de 40 km a 1 km de resolución. En este trabajo se han comparado medidas de humedad in situ de la parcela con los valores obtenidos con el algoritmo DisPATCh para evaluar en qué escenarios puede estimar correctamente la humedad de suelo a 1 km de resolución. También se ha realizado un estudio geoestadístico mediante variogramas para comprobar que DisPATCh estima la humedad de suelo a la resolución comentada. Los resultados muestran que DisPATCh no es capaz de estimar la humedad de suelo cuando las condiciones de humedad del área de estudio son distintas a las de la región donde se encuentra.
2018-03-06T15:48:11ZFontanet Ambrós, MireiaFernández García, DanielFerrer, FernadoRodrigo, GEl interés de medir la humedad de suelo a escala de parcela de cultivo mediante teledetección ha aumentado debido a la fácil disponibilidad de los datos y, que a diferencia de los sensores de humedad de suelo, no es necesario dedicar tiempo y dinero a la instalación y mantenimiento en campo. Estas medidas tienen una baja resolución espacial de 40 km. El algoritmo DisPATCh disgrega los valores de humedad de suelo de 40 km a 1 km de resolución. En este trabajo se han comparado medidas de humedad in situ de la parcela con los valores obtenidos con el algoritmo DisPATCh para evaluar en qué escenarios puede estimar correctamente la humedad de suelo a 1 km de resolución. También se ha realizado un estudio geoestadístico mediante variogramas para comprobar que DisPATCh estima la humedad de suelo a la resolución comentada. Los resultados muestran que DisPATCh no es capaz de estimar la humedad de suelo cuando las condiciones de humedad del área de estudio son distintas a las de la región donde se encuentra.Temperature driven vapor fluxes in soils cause a net recharge
http://hdl.handle.net/2117/114866
Temperature driven vapor fluxes in soils cause a net recharge
Gran Esforzado, Meritxell; Saaltink, Maarten Willem; Dandar, Enkhbayar; Carrera Ramírez, Jesús
Temperature gradients can drive vapor diffusion by controlling vapor pressure in the soil. We studied vapor diffusion for soils in two different climates: A semiarid climate at El Cabril (Córdoba, Spain) and a subarctic climate in the Upper Tuul River basin (Mongolia). For El Cabril vapor diffusive fluxes were studied by means of the measured temperatures and an analytical model. For the second site (Upper Tuul) a physically based soil water and energy balance model was developed
accounting for relevant processes such as melting-freezing of water and vapor diffusion in the soil. Results of both sites show that vapor diffuses downwards during summer and upwards during winter, while
yearly averaged fluxes diffuse downwards. The overall amount is small for El Cabril, but significant for the Upper Tuul. The latter large values can be explained by the large temperature oscillations of the Mongolian
climate and the freezing/thawing of subsoil layer.
2018-03-06T14:59:37ZGran Esforzado, MeritxellSaaltink, Maarten WillemDandar, EnkhbayarCarrera Ramírez, JesúsTemperature gradients can drive vapor diffusion by controlling vapor pressure in the soil. We studied vapor diffusion for soils in two different climates: A semiarid climate at El Cabril (Córdoba, Spain) and a subarctic climate in the Upper Tuul River basin (Mongolia). For El Cabril vapor diffusive fluxes were studied by means of the measured temperatures and an analytical model. For the second site (Upper Tuul) a physically based soil water and energy balance model was developed
accounting for relevant processes such as melting-freezing of water and vapor diffusion in the soil. Results of both sites show that vapor diffuses downwards during summer and upwards during winter, while
yearly averaged fluxes diffuse downwards. The overall amount is small for El Cabril, but significant for the Upper Tuul. The latter large values can be explained by the large temperature oscillations of the Mongolian
climate and the freezing/thawing of subsoil layer.Modelling tritium transport, matrix diffusion and multiphase flow in a concrete cell used for storing radioactive waste at El Cabril (Spain)
http://hdl.handle.net/2117/114307
Modelling tritium transport, matrix diffusion and multiphase flow in a concrete cell used for storing radioactive waste at El Cabril (Spain)
Chaparro Sánchez, Maria Carme; Saaltink, Maarten Willem
‘El Cabril’ is the low and intermediate level radioactive waste disposal facility of Spain. Water with high concentration of tritium is collected from a drain, which is situated at the centre of a concrete cell that stores radioactive waste, indicating flow of water within the cell. 2D numerical models have been made in order to develop a qualitative and partial quantitative understanding of the processes that causes this phenomenon. The conceptual model considers evaporation and condensation processes due to temperature gradients, matrix diffusion between a mobile zone (with advection, dispersion and diffusion) and an immobile zone (with only diffusion). Model results suggest that only the tritiated water used to prepare the mortar to refill the containers, which can be in liquid and gas phases, could leave the cell being collected in the drain.
2018-02-20T18:21:37ZChaparro Sánchez, Maria CarmeSaaltink, Maarten Willem‘El Cabril’ is the low and intermediate level radioactive waste disposal facility of Spain. Water with high concentration of tritium is collected from a drain, which is situated at the centre of a concrete cell that stores radioactive waste, indicating flow of water within the cell. 2D numerical models have been made in order to develop a qualitative and partial quantitative understanding of the processes that causes this phenomenon. The conceptual model considers evaporation and condensation processes due to temperature gradients, matrix diffusion between a mobile zone (with advection, dispersion and diffusion) and an immobile zone (with only diffusion). Model results suggest that only the tritiated water used to prepare the mortar to refill the containers, which can be in liquid and gas phases, could leave the cell being collected in the drain.Remediación agua contaminada por mercurio y portlandita en Flix
http://hdl.handle.net/2117/104253
Remediación agua contaminada por mercurio y portlandita en Flix
Auria, Gonzalo; Ayora Ibáñez, Carlos; Díez, S.; Carrera Ramírez, Jesús
Hace unos años se decidió descontaminar el embalse de Flix, afectado por vertidos de residuos por un empresa química durante todo el siglo pasado.
•Los residuos formaron 4 lóbulos de sedimentos en el río, con elevadas concentraciones de Mercurio, compuestos orgánicos volátiles (COV´s), residuos de producción de acetileno (Ca(OH)2) y pesticidas organoclorados.
•Se ha realizado un modelo 0D de transporte reactivo de la concentración en el agua conforme se excavan los sedimentos transitorio y explícito en excel, calibrado hasta Septiembre 2014 con datos semanales de la empresa extractora FCC.
•El modelo concluía dos graves problemas al terminar la excavación: Elevada concentración de Hg y pH (12.4), equilibrado con portlandita
•Desde Marzo de 2015 se observó un acusado descenso de pH y Hg. Nuestro objetivo ha sido encontrar la causa de estos descensos, para ello se han realizado simulaciones, muestreos y experimentos de laboratorio.
La precipitación CaCO3 debida a la difusión de CO2 atmosférico explica una parte de la disminución de pH, pero resulta insuficiente aun considerando la oxidación de materia orgánica.
•El Hg se adsorbido en CaCO3 es alrededor de un 30%, otro 60% parece haberse volatilizado.
•La electrolisis en laboratorio reproduce un descenso del Hg de 80% en 3 días. Sólo un 10% de Hg ha sido recuperado en el cátodo.
• Se cree que el Hg2+ se reduce a Hg0 y volatiliza.
•El pH descendió hasta 3.8, se cree que debido a hidrólisis del agua.
•Se esta trabajando en comprobar el Hg0 volatilizado en próximos experimentos.
2017-05-10T09:29:08ZAuria, GonzaloAyora Ibáñez, CarlosDíez, S.Carrera Ramírez, JesúsHace unos años se decidió descontaminar el embalse de Flix, afectado por vertidos de residuos por un empresa química durante todo el siglo pasado.
•Los residuos formaron 4 lóbulos de sedimentos en el río, con elevadas concentraciones de Mercurio, compuestos orgánicos volátiles (COV´s), residuos de producción de acetileno (Ca(OH)2) y pesticidas organoclorados.
•Se ha realizado un modelo 0D de transporte reactivo de la concentración en el agua conforme se excavan los sedimentos transitorio y explícito en excel, calibrado hasta Septiembre 2014 con datos semanales de la empresa extractora FCC.
•El modelo concluía dos graves problemas al terminar la excavación: Elevada concentración de Hg y pH (12.4), equilibrado con portlandita
•Desde Marzo de 2015 se observó un acusado descenso de pH y Hg. Nuestro objetivo ha sido encontrar la causa de estos descensos, para ello se han realizado simulaciones, muestreos y experimentos de laboratorio.
La precipitación CaCO3 debida a la difusión de CO2 atmosférico explica una parte de la disminución de pH, pero resulta insuficiente aun considerando la oxidación de materia orgánica.
•El Hg se adsorbido en CaCO3 es alrededor de un 30%, otro 60% parece haberse volatilizado.
•La electrolisis en laboratorio reproduce un descenso del Hg de 80% en 3 días. Sólo un 10% de Hg ha sido recuperado en el cátodo.
• Se cree que el Hg2+ se reduce a Hg0 y volatiliza.
•El pH descendió hasta 3.8, se cree que debido a hidrólisis del agua.
•Se esta trabajando en comprobar el Hg0 volatilizado en próximos experimentos.Los retos de las aguas subterráneas en países en vías de desarrollo
http://hdl.handle.net/2117/101567
Los retos de las aguas subterráneas en países en vías de desarrollo
Folch Sancho, Albert; Closas, Alvar
2017-02-24T16:01:02ZFolch Sancho, AlbertClosas, Alvar