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Eventos y Seminarios

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Formación, cursos, eventos y seminarios

Bioreduction of Fe (III)-oxides under marine conditions 



A cargo de: Robert Beaniges  (Ph D Student)

Fecha: Jueves 25 de Abril
Hora: a las 12:15 h
Lugar: Departamento de Ingeniería Civil y Ambienta, Modulo D2-Aula CIHS, Planta Baja

Shewanella is a genus of marine bacteria capable of dissimilatory iron reduction (DIR). In the context of deep-sea mining activities or submarine minetailings disposal, dissimilatory iron reducing bacteria may play an important role in biogeochemical reactions concerning iron oxides placed on the sea bed. In our performed study, batch experiments were carried out to evaluate the capacity of Shewanella loihica PV-4 to bioreduce different iron oxides (ferrihydrite, magnetite, goethite and hematite) under conditions similar to those in anaerobic sea sediments and elucidate the reaction mechanisms. Results showed that bioreduction of structural Fe(III) via oxidation of labile organic matter occurred in all these iron oxides. Based on the aqueous Fe (II) released, derived Fe(II)/acetate ratios and bioreduction coefficients seem to be only up to about 4% of the theoretical ones, considering the ideal stoichiometry of the reaction. A loss of aqueous Fe (II) was caused by adsorption  and mineral transformation processes. Scanning electron microscope images showed that Shewanella lohica was attached to the Fe(III)-oxide surfaces during bioreduction. Our findings suggest that DIR of Fe(III) oxides from mine waste placed in marine environments could result in adverse ecological impacts such as liberation of trace metals in the environment. 




1.       Martin Appold - University of Missouri, USA

11:00-11:20. Role of groundwater in the formation of fluorite ore deposits in the Illinois-Kentucky district, central U.S.:  Evidence from fluid inclusions and numerical reactive transport modeling


2Jesus Carrera- Consejo Superior de Investigaciones Científicas

11:20- 11:40. Our pilot sites for artificial recharge at palamos and for seawater intrusion at argentona


3.       Rui Ma - China University of Geosciences (Wuhan), China

11:40-12:00. Model-based analysis of South-to-North and Yangtze-Hanjiang River Water Diversion projects on surface water and groundwater interactions in the central Yangtze River basin, China


4.       Víctor Vilarrasa - Consejo Superior de Investigaciones Científicas
12:00-12:20. Is fault width evolution in induced seismicity analogous to that of natural seismicity?


5.       Jean-Christophe Comte - University of Aberdeen, Scotland

12:20- 12:40. Increasing groundwater model reliability through quantitative use of geophysical data

6. Xavier Sanchez Vila - Universidad Politécnica de Cataluña

12:40- 13:00. Porous media as a canvas for hydro-bio-geo-chemical processes 


7.       Cliff Voss - US Geological Survey, USA

13:00-13:20. Groundwater-flow impacts on thawing permafrost systems


8.       Daniel Fernández - Universidad Politécnica de Cataluña

13:20-13:40. "Nonlinear reactive transport with Lagrangian approaches"


9.       Jean-Michel Lemieux - Université Laval, Canada

13:40-14:00. Groundwater dynamics within a watershed in the discontinuous permafrost zone



The seminars will in on:

Friday 5 April from 11:00 to 14:00

at UPC, Campus Nord, Building D2 Room 001

Combining geologic carbon storage with geothermal energy production

A cargo de: Victor Vilarrasa Riaño (Investigador CSIC)

Dia: Jueves 04 de Abril

Hora: a las 12:15 h

Lugar: Departamento de Ingeniería Civil y Ambiental, Modulo D2-Aula CIHS, Planta Baja


To meet the Paris Agreement goal of limiting temperature increase below 2°C, we need to urgently reduce CO2 emissions and reach zero emissions by 2050. According to the International Energy Agency, geologic carbon storage has the potential to contribute with some 20% to the total CO2 emissions reduction. However, geologic carbon storage might be deployed because of its cost and the potential risk of inducing earthquakes for Gt scale storage. To reduce cost, the injected CO2 should be utilized somehow to generate revenue, leading to Carbon, Capture, Utilization and Storage (CCUS). And to reduce the risk of inducing earthquakes, overpressure should be reduced in faults, which can be achieved by strategically placing production wells. An alternative that meets these two requirements is combining geologic carbon storage with geothermal energy production using CO2 as the working fluid.


Enhance chaotic advection through engineered extraction-injection system 

A cargo de: Oriol Bertran

Dia: Jueves 28 de Marzo 
Hora: 12:15 h
Lugar: Departamento de Ingeniería Civil y Ambienta, Modulo D2-Aula CIHS, Planta Baja


Can we control chaos? Behind this presumptuous question hides so many studies that pursue an optimization of the “chaos”, and therefore the mixing. From Aref (1984) to Di Dato (2018), the scientific community have been wondering about this issue through the last thirty years. Different methods have been proposed to date, like Rotated Potential Mixing (Lester et al., 2009) or Engineered Injection and Extraction system (Piscopo et al., 2013; Neupauer et al., 2014; Rodríguez-Escales et al., 2017). In this talk, we are going to expose the first preliminary results that tell us how the dilution evolves under induced chaotic advection, both in non-connected and connected fields. The objective is to investigate the impact of chaotic flow on preferential channels. Also in this talk, a brief explanation about how we are going to face this process in a laboratory scale will be defined.

The Effect of Redox Conditions in Ultraviolet-Filter’s Fate and the Influence of Biomass in Sorption Processes 

A cargo de: Paula Rodriguez Escales (Personal Docent Investigador UPC)
Dia: Jueves 07 de Marzo
Hora: 12:15 h
Lugar: Departamento de Ingeniería Civil y Ambiental, Modulo D2-Aula CIHS, Planta Baja


Ultraviolet (UV) filters are one of the most common compounds found in water systems. They are widely used as personal and care products like sunscreens and cosmetics (perfumes, creams or shampoos), and in a number of industrial applications. Aside from degradation, sorption determines the concentration of UV-filters in the water bodies and thus their bioavailability and toxicity to ecosystems and humans. UV-filters are a wide group of compounds, with different sorption behavior expected depending on the chemical properties (pKa, Koc, Kow). Combining with the changes of sorbent properties, it makes necessary the improvement of the understanding of sorption processes of UV-filters occurring in the aquifer. Thus, the goal of this work was to evaluate the role of biomass growth, solid organic matter (SOM) and redox conditions in sorption processes of a set of UV-filters with different chemical properties. To achieve this goal, we have constructed a conceptual and a numerical model to evaluate the fate of selected UV filters, mainly focused on sorption processes but also addressing degradation. The models were validated with published data by Liu et al. (2013), consisting in different batch experiments evaluating the fate of a cocktail of UVs under different redox conditions. The compounds evaluated included ionic UV filters (Benzophenone-3; 2-(3-t-butyl-2-hydroxy-5-methylphenyl)5-chloro benzotriazole; 2-(2’-hydroxy-5’-octylphenyl)-benzotriazole) and neutral ones (octyl 4-methoxycinnamatte; and octocrylene). 

Analytical estimation of pressure response to multiple well CO2 storage by corrected superposition of single well injection models

A cargo de: Silvia de Simone (Imperial College London)
Dia: Jueves 28 de Febrero
Hora: a las 12:15 h
Lugar: Departamento de Ingeniería Civil y Ambiental, Modulo D2-Aula CIHS, Planta Baja

Carbon Capture and Storage (CCS) is a promising technology for the cost effective transition to low carbon energy systems. A global injection of the order of 10 Gt CO2 per year must be stored for meeting the target of less than 2 degrees of global warming by 2050. This requires the injection of CO2 into deep saline aquifer through multiple sites. The adoption of simplified analytical solutions greatly helps in the preliminary evaluation of the site storage capacity and injectivity, which can be included in energy system models to identify potential bottlenecks to CCS deployment. While pioneering efforts have been devoted to analytically estimate the reservoir pressurisation in response to the injection of CO2 into a single well, the solution of the multi-site injection scenario is typically performed by simple superposition, which is theoretically invalid for multi-phase systems. We quantify the error associated to the application of superposition to multiple CO2 injection well scenarios in a rectangular grid geometry. We show that the application of superposition overestimates the pressure build-up because it neglects the presence of multiple CO2 plumes that increases the total fluid mobility in the reservoir. The adoption of a dimensionless time scaled to the geometric average between the advective and the diffusive characteristic times allows us to define a general model for the error which can be used to correct the pressure estimated by superposition. This procedure can be applied to any analytical solution and represent an extension of the analytical simplified models to scenarios of multiple injections sites. 
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