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DTSTART;TZID=Europe/Oslo:20260417T130000
DTEND;TZID=Europe/Oslo:20260417T160000
DTSTAMP:20260413T105300
CREATED:20260313T095002Z
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SUMMARY:📢 Announcement: Doctoral Defence – Raymond Mushabe
DESCRIPTION:Title:  Underground hydrogen storage in porous media: microbial controls and multiphase flow. \n\nDate: 17 April 2026\nTime: 13:15–16:00 (CET)\nLocation: Realfagbygget\, Auditorium 2\, University of Bergen\nHost: University of Bergen (UiB)\nAffiliation: Centre for Sustainable Subsurface Resources (CSSR) \n\nAbout the event\nRaymond Mushabe will defend his PhD thesis entitled\nUnderground hydrogen storage in porous media: microbial controls and multiphase flow. \nThe thesis addresses key challenges related to large‑scale underground storage of hydrogen\, with a particular focus on how microbial activity and multiphase flow in porous media may influence storage efficiency and predictability. \n\nResearch overview\nThe PhD work investigates how microbial processes in reservoir rocks can lead to hydrogen consumption\, energy losses\, and changes in gas–fluid flow behaviour. The study combines laboratory experiments\, advanced imaging techniques (MRI and PET)\, reservoir‑scale simulations\, and machine‑learning‑based modelling. \nThe results indicate that hydrogen losses decrease over repeated storage cycles\, suggesting more stable and predictable storage behaviour over time. \n\nAbout the candidate\nRaymond Mushabe grew up in Uganda and holds a Master’s degree in petroleum technology from NTNU. His PhD research in reservoir physics (2022–2025) was carried out in collaboration with the University of Bergen\, Haukeland University Hospital\, Equinor\, and NORCE. \nThe work was funded by the Research Council of Norway and conducted as part of the Centre for Sustainable Subsurface Resources (CSSR). \nSupervisors:\nGeir Ersland · Na Liu · Nicole Dopffel · Marianne Steinsbø \n\nFurther information (UiB)\nThe University of Bergen has published additional information about the doctoral defence in Norwegian\, including background on the research: \n👉 Hydrogen storage underground and microbes with an appetite (UiB)\n[Hydrogenlagring i undergrunnen og mikrobar med appetitt | Nye doktorgrader | UiB]
URL:https://cssr.no/calendar/%f0%9f%93%a2-announcement-doctoral-defence-raymond-mushabe/
LOCATION:Realfagbygget\, Auditorium 2\, Nygårdsgaten 5\, Bergen\, Norway
ATTACH;FMTTYPE=image/jpeg:https://cssr.no/wp-content/uploads/2022/10/Raymond-Mushabe.jpg
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DTSTART;TZID=Europe/Oslo:20260424T090000
DTEND;TZID=Europe/Oslo:20260424T100000
DTSTAMP:20260413T105300
CREATED:20260302T100443Z
LAST-MODIFIED:20260401T212208Z
UID:4461-1777021200-1777024800@cssr.no
SUMMARY:CSSR: Open Webinar Series 2026
DESCRIPTION:Registration link : https://events.teams.microsoft.com/event/23ac76c1-b90a-4e6b-b0d7-3541e77ca8b9@70a6eba4-9671-45d2-b83e-432e06502242 \nAuthor: Dr. Na Liu is a Research Scientist at the University of Bergen specializing in pore-scale processes in porous geological media. Her research integrates microfluidic experiments\, imaging\, and geochemical analysis to investigate multiphase flow\, mineral–fluid interactions\, and microbial processes affecting subsurface hydrogen behaviour. Within the Centre for Sustainable Subsurface Resources\, she serves as Deputy Leader of Work Package 2\, contributing to research on coupled transport and reactive processes in subsurface energy systems. \nTitle: Microfluidic Platforms for Pore-Scale Investigation of Sulfate-Reducing Bacteria under Hydrogen Storage Conditions \nAbstract: Microfluidic platforms are increasingly used to investigate microbial processes at pore-scale because they provide optical accessibility\, experimental control and relatively low cost. However\, different chip materials and designs impose distinct physical and chemical constraints\, which can significantly influence anaerobic microbial experiments relevant to subsurface hydrogen systems. Selecting the appropriate platform is therefore not trivial. \nI will compare three types of micromodels: (i) high-pressure silicon/glass microfluidic chips\, (ii) polymer-based ibidi microchips\, and (iii) natural-rock micromodels fabricated from sandstone. As a representative case\, we use the sulfate-reducing bacterium Oleidesulfovibrio alaskensis G20\, which consumes hydrogen as an electron donor and produces sulfide. \nThe silicon/glass chips enable experiments under elevated pressure and temperature conditions representative of reservoirs\, allowing quantitative assessment of hydrogen consumption\, biofilm growth\, wettability alteration and flow redistribution. Ibidi microchips provide excellent compatibility with confocal microscopy and Raman spectroscopy\, facilitating real-time visualization of microbial activity under controlled anaerobic conditions at atmospheric pressure. Natural-rock micromodels introduce realistic mineralogy and surface heterogeneity\, improving geological relevance\, but present challenges related to sealing\, hydrogen leakage\, and material compatibility. \nBy systematically comparing these platforms\, I aim to clarify their respective strengths and limitations and to discuss how they can be strategically combined in a hierarchical experimental approach. The goal is to support robust pore-scale investigations of bio-geochemical processes relevant to hydrogen storage and subsurface energy systems. \n🔹 About CSSR\nThe Centre for Sustainable Subsurface Resources (CSSR) is a national research centre funded by the Research Council of Norway and a consortium of industry sponsors. CSSR is dedicated to advancing research and innovation in low-emission subsurface applications\, with a strong focus on reservoir management\, CO₂ storage\, and the sustainable use of Norway’s subsurface resources. Our goal is to support the transition to a low-emission society through science-based solutions and collaborative research. Learn more at www.cssr.no. \nWho Should Attend: This talk will be of particular interest to: \n\nResearchers and students in geoscience\, reservoir engineering\, and energy systems\nIndustry professionals working in CO₂ storage\, hydrogen storage\, and petroleum reservoir management\nPolicymakers and stakeholders involved in the energy transition and climate strategy\nAnyone interested in data-driven approaches to sustainable subsurface resource use\n\nEvent Format: The session will begin with a short introduction to CSSR and its research focus\, followed by the scientific presentation and an open Q&A session. \nPlease note: The introduction and scientific talk will be recorded and made available after the event. The Q&A session will not be recorded to encourage open discussion. \nWe look forward to welcoming you to this exciting event and to insightful discussions.
URL:https://cssr.no/calendar/cssr-open-webinar-series-2/
LOCATION:digital
ATTACH;FMTTYPE=image/jpeg:https://cssr.no/wp-content/uploads/2026/03/Na-Liu-2.jpg
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