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+34 93 401 18 60This email address is being protected from spambots. You need JavaScript enabled to view it.
UPC: C/ Jordi Girona 31, (08034 - Barcelona) - IDAEA: C/ Jordi Girona 18-26, (08034 - Barcelona)

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Lectura de tesis

LECTURA DE TESIS 

GRUPO DE HIDROLOGÍA SUBTERRANEA (Unidad Asociada UPC-CSIC)



 
Comunicamos,

El próximo 18 de julio de 2019 tendrá lugar la defensa de la Tesis Doctoral dentro del Programa de Doctorado en Ingeniería del Terreno;
On july 18th 2019, the following PhD. Thesis in Geothecnical Engineering and Geo-Sciences will be defended;


"Assessment of a groundwater system under global change scenarios: the case of Kwale (Kenya) "
 
Núria Ferrer Ramos
 
Thesis advisors: Albert Folch Sancho.

The defense will take place:
Thursday, july 18th 2019, 11:00 

Place:
UPC, Campus Nord
Building D2. Classroom: 212
C/Jordi Girona, 1-3
08034 Barcelona

Heterogeneity in anthropogenic and natural systems

SEMINARIO GRUPO DE HIDROLOGIA SUBTERRÁNEA (UPC-CSIC)

 

A cargo de: Joaquin Soler (Ph D Student)


Dia: Jueves 04 de Julio

Hora: a las 12:15 h

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


Abstract:

Heterogeneous systems are present in both natural and anthropogenic environments (such as social networks and economy). Beyond the differences of their applications, numerical models are used to reproduce and predict their behavior. Moreover, some similarities could be found between them such as the presence of different scales and the discretization in classes. Here we compare the solute transport through porous media with the prime economic system to highlight the importance of considering heterogeneity in these models.

Geochemistry of rare earth elements in acid mine drainage

a cargo de: Carlos Ayora. Profesor de Investigación IDAEA

Día: Jueves 20 de Junio a las 12:15 h

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


Abstract:

The REE concentrations in AMD are several orders of magnitude higher than the rest of surface waters and could be a future supplementary source of some highly valuable REE.  Precipitation of schwertmannite and to basaluminite occurs due to mixing of acid (and REE-rich) and alkaline streams.  The REE fractionation between AMD and the solid phases has been investigated in several localities from the Odiel-Tinto (SW Spain) and Arroyo del Val (N Spain) basins. The behavior of REE during the mixing is conservative at low pH (pH<3), whereas they are scavenged by the flocculates at near neutral pH. The validity and limitations of a recently proposed thermodynamic model of REE sorption on schwertmannite and to basaluminite has been tested by comparing its predictions with the observations made. Finally, some observations suggest that Sc behaves differently from the rest of REE. According to the model, sorption of Sc onto schwertmannite at pH lower than 4 could also occur. . As a practical consequence, REE are preferentially accumulated in the basaluminite sludge of AMD treatments, but a significant fraction of Sc from the AMD can be also found in the schwertmannite residue.

The main factors influencing the presence of faecal bacteria pollution in groundwater systems in developing countries  


SEMINARIO GRUPO DE HIDROLOGIA SUBTERRÁNEA
(UPC-CSIC)

 

A cargo de: Nuria Ferrer Ramos - PhD Student


Dia: Jueves 13 de Junio

Hora:a las 12:15 h
en 

 


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


Abstract:

Groundwater is the major source of drinking water in most African and Asian rural areas. This resource is threatened by the potential presence of faecal bacteria through a variety of sources and pollution paths, including septic tanks, landfills, and crop irrigation with untreated, or insufficiently treated, sewage effluent. Accurately assessing the microbiological safety of water resources is essential to reduce diseases caused by waterborne faecal exposure. The objective of this seminar is to present which are the most significant sanitary, hydrogeological, geochemical and physical variables influencing the presence of faecal bacterial pollution in groundwater by means of statistical multivariate analyses. The concentration of Escherichia coliwas measured in a number of waterpoints of different types in a rural area located in the coast of Kenya, separating the effects of the dry and wet season

Heat, Vapor and Sunshine: Explaining Fluctuations of Soil Water Content


SEMINARIO GRUPO DE HIDROLOGIA SUBTERRÁNEA
(UPC-CSIC)

 

A cargo de: Maarten Saaltink
 

Dia: Jueves 06 de Junio
Hora:a las 12:15 h
Lugar: Departamento de Ingeniería Civil y Ambiental, Modulo D2-Aula CIHS, Planta Baja


Abstract:

Daily temperature oscillations can cause fluctuations in the amount of water retained in a soil. These fluctuations can be measured by high precision weighing lysimeters. We analyzed the data of a lysimeter in a sandy dune sediment in Southern Spain by means of unsaturated thermo-hydraulic numerical models which considers water, vapor and heat transport in the soil as well as soil-atmosphere interactions such as precipitation, evaporation and solar radiation. The analysis shows that daily temperature oscillations, psychrometrics and soil water retention can explain the fluctuations of the amount of liquid water in the soil. The retention curve, especially its driest part, is essential for the existence of these fluctuations. The fluctuations could not be reproduced by a model using the van Genuchten retention curve with a constant residual saturation. On the other hand, satisfactory results could be obtained by models using retention curves that at their driest part still show a change of saturation with suction. Moreover, the models suggest within the top few decimeters of the soil a pattern of alternating bands of condensation and evaporation, which follows the daily temperature oscillations that fade out deeper in the soil. 

 

Laboratory Experiments to Evaluate the Joint Effect Between Heterogeneity and head fluctuation on mixing, effective porosity and tailing

DEFENSA TESI DOCTORAL - DEFENSA TESIS DOCTORAL - PhD THESIS DEFENSE

Laboratory Experiments to Evaluate the Joint Effect Between Heterogeneity and head fluctuation on mixing, effective porosity and tailing”
SR. EDUARDO FRANCISCO CASTRO ALCALÁ

 Directors:

  1. JESÚS CARRERA RAMÍREZ / DR. DANIEL FERNÁNDEZ GARCÍA



 

DIJOUS, 30 MAIG – JUEVES, 30 MAYO - THURSDAY, MAY 30th (2019)

12.00 H.

Sala 002, Edifici C1, Campus Nord de la UPC

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