Today we started the first gas sampling campaign planned in 2022 at the HotBENT experiment (Grimsel Test Site). For this purpose, Entracers prepared additional samplers that will be available for future projects of our customers.
A collaborative research project involving the Swiss Federal Institute of Aquatic Science and Technology, the Institute of Geological Sciences at the University of Bern, and Posiva Oy targeted gas-bentonite interactions in relation to the gas dynamics in Engineered Barrier Systems. The outcome of the study has been published in the following open access article:
- Tomonaga, Y., Wersin, P., Rufer, D., Pastina, B., Koho, P., Ville, H., & Kipfer, R. (2022). Gas-bentonite interactions: Towards a better understanding of gas dynamics in Engineered Barrier Systems. Appl. Geochem., 138, 105205, doi:10.1016/j.apgeochem.2022.105205.
Interested in conducting further investigations based on the same methods? Entracers GmbH can now provide the required know-how as well as the related analytical facilities!
On Jan. 15th 2022, while running test measurements, our miniRUEDI was able to catch the pressure wave produced by the Hunga Tonga volcanic eruption.
After the revision of one of the valves of the gas circulation system at the HotBENT experiment, on Sept. 16th 2021 the gas monitoring of all sampling ports within the drift was launched. This will allow observation of possible changes in the gas composition even during the early stages of the experiment.
After a couple of months Entracer’s first portable membrane inlet mass spectrometer system (aka miniRUEDI) is ready to determine gas concentrations in the environment. A few applications that exemplify the flexibility of this instrument:
- Long-term monitoring of the gas composition in a trial run for radioactive waste disposal (Tomonaga et al., 2019, Appl. Geochem.)
- Targeting the gas-clay interactions in laboratory trials (Giroud et al., 2018, Appl. Geochem.)
- Determine changes in the noble-gas composition at CO2 capture plants (Weber et al., 2021, Int. J. Greenh. Gas Con.)
Many thanks are due to Matthias Brennwald at Gasometrix GmbH for supporting its construction!
A few more custom parts and our portable membrane inlet mass spectrometer will be ready to run.