A5015158727- Groundwater flow and contamination studies
- Soil and Unsaturated Flow
- Rock Mechanics and Modeling
- Hydrocarbon exploration and reservoir analysis
- Geophysical Methods and Applications
- Radioactive element chemistry and processing
- Radioactive contamination and transfer
- Seismic Imaging and Inversion Techniques
- Radioactivity and Radon Measurements
- CO2 Sequestration and Geologic Interactions
- Hydraulic Fracturing and Reservoir Analysis
- Geophysical and Geoelectrical Methods
- Concrete and Cement Materials Research
- NMR spectroscopy and applications
- Groundwater and Isotope Geochemistry
- Enhanced Oil Recovery Techniques
- Drilling and Well Engineering
- biodegradable polymer synthesis and properties
- Computational Fluid Dynamics and Aerodynamics
- Plasma and Flow Control in Aerodynamics
- Selenium in Biological Systems
- earthquake and tectonic studies
- Geomechanics and Mining Engineering
- Nuclear Materials and Properties
- Coal Properties and Utilization
University of Helsinki
2008-2019
Helsinki Art Museum
2018
University of Jyväskylä
2006-2014
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2008
CEA Paris-Saclay
2008
Helsinki Institute of Physics
2008
University of Nebraska–Lincoln
2008
Abstract In this study the sorption of cesium was investigated on four different minerals; quartz, plagioclase, potassium feldspar and biotite as well granodiorite obtained from Grimsel test site in Switzerland. The experiments were conducted presence weakly saline groundwater simulant by determining distribution coefficients using batch PHREEQC-modelling across a large concentration range. addition, purity minerals measured byXRDand specific surface areas BET method krypton. cesiumwere...
Abstract Transport and retardation of cesium in Grimsel granodiorite taking into account heterogeneity mineral pore structure was studied using rock samples overcored from an situ diffusion test at the Test Site. The field part Long‐Term Diffusion (LTD) project designed to characterize properties (diffusion distribution coefficients) under conditions. Results LTD experiment for showed that in‐diffusion profiles spatial concentration distributions were strongly influenced by heterogeneous...
Traditionally, polymers and macromolecular components used in the foam industry are mostly derived from petroleum. The current transition to a bio-economy creates demand for use of more renewable feedstocks. Soybean oil is vegetable oil, composed mainly triglycerides, that suitable material production. In this study, acrylated epoxidized soybean variable amounts cellulose fibres were production bio-based foam. developed macroporous architectures characterised by several techniques, including...
The structure of geological materials strongly affects migration processes that take place in them and are also important their weathering alteration processes. Further information will be for many applications involve materials. emphasis this study was thus to characterize the pore porosity altered tonalite by combining different measuring techniques: X‐ray tomography, 14 C‐polymethylmethacrylate method, electron microscopy, argon pycnometry. Intragranular porosities were determined using...
Abstract In this study the sorption of cesium was investigated on four different minerals; quartz, plagioclase, potassium feldspar and biotite as well granodiorite obtained from Grimsel test site in Switzerland. The experiments were conducted presence weakly saline groundwater simulant by determining distribution coefficients using batch PHREEQC-modelling across a large concentration range. addition, purity minerals measured XRD specific surface areas BET method krypton. largest (0.304 ±...
Research Article| September 01, 2016 Development of a fracture network in crystalline rocks during weathering: Study Bishop Creek chronosequence using X-ray computed tomography and 14C-PMMA impregnation method Arnaud Mazurier; Mazurier 1Institut de Chimie des Matériaux et Milieux Poitiers (IC2MP)/Hydrogéologie, Argiles, Sols Altérations (HYDRASA), University Poitiers, 86022 Cedex, France2ERM Company, 40 Avenue du Recteur Pineau, 86000 France Search for other works by this author on: GSW...
This study aims to determine upscaling factors for the radionuclides' distribution coefficients (Kd) on crushed rocks intact rock safety analysis of radionuclide migration from spent nuclear fuel in bedrock towards biosphere. Here we report determined by electromigration sorption experiments and compare results with those recently performed batch experiments. In total 34 samples, representing three typical types Olkiluoto Finland, were studied order coefficients, effective diffusion...
We set out to study connected porosity of crystalline rock using X-ray microtomography and scanning electron microscopy with energy dispersive spectroscopy (SEM-EDS) caesium chloride as a contrast agent. Caesium is an important radionuclide regarding the final deposition nuclear waste also forms dense phases that can be readily distinguished by SEM-EDS. Six samples from two sites, Olkiluoto (Finland) Grimsel (Switzerland), where transport properties are being studied in situ, were...
The spent nuclear fuel in Finland will be deposited crystalline granitic rock Olkiluoto, Finland. As a part of the safety assessment repository, series extensive in-situ sorption and diffusion experiments supplementary laboratory work has been done Olkiluoto site. Through Diffusion Experiment (TDElab) aims to provide applicable data for ongoing experiment Olkiluoto. This scale resembles gain information on possible effects values distribution coefficients, effective coefficient porosity that...
The distribution coefficient (Kd) of radionuclides on bedrock is one the key parameters used in safety analysis spent nuclear fuel repositories. Typically, coefficients have been determined using crushed rock. However, recent studies shown that crushing rock increases considerably compared with values intact This study aimed to test if batch sorption experiments different grain sizes (i.e. mean diameter grains) can be evaluate Kd strontium (Sr) and cesium (Cs) crystalline rock, which would...