Search Results - "Leupin, Olivier X"

The use of clay as an engineered barrier in radioactive-waste management; a review by Sellin, Patrik, Leupin, Olivier X

“…Geological disposal is the preferred option for the final storage of high-level nuclear waste and spent nuclear fuel in most countries. The selected host rock…”
Get full text

Reconstructing a hydrogen-driven microbial metabolic network in Opalinus Clay rock by Bagnoud, Alexandre, Chourey, Karuna, Hettich, Robert L., de Bruijn, Ino, Andersson, Anders F., Leupin, Olivier X., Schwyn, Bernhard, Bernier-Latmani, Rizlan

“…The Opalinus Clay formation will host geological nuclear waste repositories in Switzerland. It is expected that gas pressure will build-up due to hydrogen…”
Get full text

Oxidation and removal of arsenic (III) from aerated groundwater by filtration through sand and zero-valent iron by Leupin, Olivier X., Hug, Stephan J.

“…Removing arsenic from contaminated groundwater in Bangladesh is challenging due to high concentrations of As(III), phosphate and silicate. Application of…”
Get full text

Microbial hydrogen sinks in the sand-bentonite backfill material for the deep geological disposal of radioactive waste by Rolland, Camille, Burzan, Niels, Leupin, Olivier X, Boylan, Aislinn A, Frutschi, Manon, Wang, Simiao, Jacquemin, Nicolas, Bernier-Latmani, Rizlan

“…The activity of subsurface microorganisms can be harnessed for engineering projects. For instance, the Swiss radioactive waste repository design can take…”
Get full text

Fifteen years of microbiological investigation in Opalinus Clay at the Mont Terri rock laboratory (Switzerland) by Leupin, Olivier X., Bernier-Latmani, Rizlan, Bagnoud, Alexandre, Moors, Hugo, Leys, Natalie, Wouters, Katinka, Stroes-Gascoyne, Simcha

“…Microbiological studies related to the geological disposal of radioactive waste have been conducted at the Mont Terri rock laboratory in Opalinus Clay, a…”
Get full text

Interaction of Corroding Iron with Eight Bentonites in the Alternative Buffer Materials Field Experiment (ABM2) by Paul Wersin, Jebril Hadi, Andreas Jenni, Daniel Svensson, Jean-Marc Grenèche, Patrik Sellin, Olivier X. Leupin

“…Bentonite, a common smectite-rich buffer material, is in direct contact with corroding steel in many high-level radioactive waste repository designs. The…”
Get full text

A minimalistic microbial food web in an excavated deep subsurface clay rock by Bagnoud, Alexandre, de Bruijn, Ino, Andersson, Anders F., Diomidis, Nikitas, Leupin, Olivier X., Schwyn, Bernhard, Bernier-Latmani, Rizlan

“…Clay rocks are being considered for radioactive waste disposal, but relatively little is known about the impact of microbes on the long-term safety of…”
Get full text

Modeling the Ionic Strength Effect on Diffusion in Clay. The DR‑A Experiment at Mont Terri by Soler, Josep M, Steefel, Carl I, Gimmi, Thomas, Leupin, Olivier X, Cloet, Veerle

“…Solute diffusion in compacted clays depends on ionic strength through its control on the thickness of the electrical double layer (EDL) on the charged clay…”
Get full text

Anaerobic corrosion of carbon steel in bentonite: An evolving interface by Leupin, Olivier X., Smart, Nick R., Zhang, Zhidong, Stefanoni, Matteo, Angst, Ueli, Papafotiou, Alexandros, Diomidis, Nikitas

“…[Display omitted] •Initial anaerobic corrosion rates of steel in bentonite outpace the diffusion of water.•A hydrogen gas phase is temporarily formed close to…”
Get full text

Environmental Selenium Research: From Microscopic Processes to Global Understanding by Winkel, Lenny H. E, Johnson, C. Annette, Lenz, Markus, Grundl, Tim, Leupin, Olivier X, Amini, Manouchehr, Charlet, Laurent

“…Selenium is a natural trace element that is of fundamental importance to human health. The extreme geographical variation in selenium concentrations in soils…”
Get full text

Bangladesh and Vietnam: Different Groundwater Compositions Require Different Approaches to Arsenic Mitigation by HUG, Stephan J., LEUPIN, Olivier X., BERG, Michael

“…To be successful, the mitigation strategy must take into account the geological differences in groundwater, the economic resources of the population, and the…”
Get full text

In-situ X-ray fluorescence to investigate iodide diffusion in opalinus clay: Demonstration of a novel experimental approach by Jaquenoud, Max, Elam, William T., Grundl, Tim, Gimmi, Thomas, Jakob, Andreas, Schefer, Senecio, Cloet, Veerle, De Cannière, Pierre, Van Loon, Luc R., Leupin, Olivier X.

“…During the last two decades, the Mont Terri rock laboratory has hosted an extensive experimental research campaign focusing on improving our understanding of…”
Get full text

Unravelling the corrosion processes at steel/bentonite interfaces in in situ tests by Wersin, Paul, Hadi, Jebril, Kiczka, Mirjam, Jenni, Andreas, Grenèche, Jean‐Marc, Diomidis, Nikitas, Leupin, Olivier X., Svensson, Daniel, Sellin, Patrik, Reddy, Bharti, Smart, Nicholas, Zhang, Zhidong

“…Microscopic and spectroscopic analyses were conducted on steel/bentonite interface samples removed from four in situ experiments that were carried out in three…”
Get full text

Modeling of Cs+ diffusion and retention in the DI-A2 experiment (Mont Terri). Uncertainties in sorption and diffusion parameters by Soler, Josep M., Wersin, Paul, Leupin, Olivier X.

“…► An in situ diffusion experiment at Mont Terri has been modeled. ► Cs+ migration can be explained using sorption parameters measured in the laboratory. ► Cs+…”
Get full text

Exploring diffusion and sorption processes at the Mont Terri rock laboratory (Switzerland): lessons learned from 20 years of field research by Leupin, Olivier X., Van Loon, Luc R., Gimmi, Thomas, Wersin, Paul, Soler, Josep M.

“…Transport and retardation parameters of radionuclides, which are needed to perform a safety analysis for a deep geological repository for radioactive waste in…”
Get full text

Arsenic Removal from Bangladesh Tube Well Water with Filter Columns Containing Zerovalent Iron Filings and Sand by Leupin, Olivier X, Hug, Stephan J, Badruzzaman, A. B. M

“…Arsenic removal is often challenging due to high As(III), phosphate, and silicate concentrations and low natural iron concentrations. Application of zerovalent…”
Get full text

Biogeochemical processes in a clay formation in situ experiment: Part F – Reactive transport modelling by Tournassat, Christophe, Alt-Epping, Peter, Gaucher, Eric C., Gimmi, Thomas, Leupin, Olivier X., Wersin, Paul

“…► Reactive transport modelling was used to simulate simultaneously solute transport, thermodynamic reactions, ion exchange and biodegradation during an in-situ…”
Get full text

Bentonite swelling pressure response to temperature change by Martikainen, Jari, Laurila, Teemu, Kumpulainen, Sirpa, Leupin, Olivier X.

“…In the proposed Swiss repository location at Nördlich Lägern, in an Opalinus Clay formation, at the depth of about 850–900 m, the ambient temperature due to…”
Get full text

The diffusion of SO42− in Opalinus Clay: Measurements of effective diffusion coefficients and evaluation of their importance in view of microbial mediated reactions in the near field of radioactive waste repositories by Van Loon, Luc R., Leupin, Olivier X., Cloet, Veerle

“…Through-diffusion experiments with 36Cl−, 35SO42− and HTO in Opalinus Clay (OPA) samples from a deep borehole in North-East Switzerland (Benken; BE) have been…”
Get full text

The diffusion of SO 4 2− in Opalinus Clay: Measurements of effective diffusion coefficients and evaluation of their importance in view of microbial mediated reactions in the near field of radioactive waste repositories by Van Loon, Luc R., Leupin, Olivier X., Cloet, Veerle

Get full text