18 Mar 2024
Job Information
- Organisation/Company
BRGM- Research Field
Other- Researcher Profile
First Stage Researcher (R1)- Country
France- Application Deadline
11 Apr 2024 - 23:59 (Europe/Brussels)- Type of Contract
Permanent- Job Status
Full-time- Offer Starting Date
1 May 2024- Is the job funded through the EU Research Framework Programme?
Not funded by an EU programme- Reference Number
2024-2481- Is the Job related to staff position within a Research Infrastructure?
No
Offer Description
One of the most problematic pollutants in terms of toxicity, volatility and average extension of the pollution plume in groundwater are chlorinated solvents, particularly frequent and problematic in industrial and urban environments. One of the main challenges in dealing with these pollutants in subsurface is their presence in heterogeneous soil, and can cause the long-term pollution through the back diffusion from the low permeable regions.
Non Newtonian fluids can provide a way to have a stable front to deliver any remedial agents including surfactant or reactive materials into the low permeable layers. The performance of reactive materials relies on both mobility and reactivity. Injecting a suspended reactive material into an unsaturated zone for pollution treatment faces challenges such as limited mobility near the injection well due to rapid aggregation, influenced by interactions with soil compounds.
Additionally, the injection of water containing reactive agents tends to follow preferential paths dictated by environmental anisotropy. Using a non-Newtonian solution, enables both homogeneous vectorization and effective delivery into low-permeability layers.
Joining the French Geological Survey (BRGM) means becoming part of France's leading public institution for Earth Science applications bringing together 1,000 wholeheartedly committed experts across 29 bases in Mainland and Overseas France.
BRGM focuses on enhancing geological knowledge and understanding of surface and sub-surface-related phenomena, with a view to: meeting the challenges of environmental changes through innovative projects with societal implications.
Climate change has accelerated the ambitious program on renewable energy, like the green deal (from European commission) or the Sustainable Energy for all initiative (from United Nations), which aims to develop an efficient, low-carbon and environmentally friendly resource.
The initial step involves evaluating the stability of non-Newtonian fluids containing reactive agents. Subsequently, the reactivity of these agents in the presence/absence of non-Newtonian fluid needs assessment. Column tests are conducted to characterize the transport of these agents into both saturated and unsaturated porous media using non-Newtonian solutions.
The reactivity of the reducers on chlorinated solvents will also be taken into account. Simultaneously, numerical modeling is employed to simulate the flow of non-Newtonian solutions in porous media and the deposition behavior of reactive particles. Open-source software like OpenFOAM (https://www.openfoam.com/ ) or FreeFEM (https://freefem.org/ ) can be utilized for numerical modeling, aligning with breakthrough curve data from column tests. Additionally, 2D tank experiments are conducted to understand delivery of reactive agents in heterogeneous systems.
The final stage aims to comprehend the radius of influence of non-Newtonian fluid, essential for a pilot-scale test.
Requirements
- Research Field
- Other
- Education Level
- PhD or equivalent
Skills/Qualifications
Preferred start date : ASAP
Type of contract : PhD
Formation : Bac+5 MSc (or engineering school)
Experience : Beginner
Candidate profile: MSc degree (or engineering school), background in engineering, hydrology, surface phenomena, computational science, fluid dynamics, or Computational Fluid Dynamics. Prior knowledge of numerical modeling in porous media using packages like OpenFOAM is a plus but not mandatory.
3-year PhD Position
NANOMOUSSE : Vectorization of reducers in porous media using non-Newtonian liquids: experiments and modeling.
Research lab: BRGM (French Geological Survey), 45100 Orléans (France)
Université Grenoble Alpes, laboratoire Rhéologie et Procédés, 38610 Gières (France). In collaboration with Colas Environnement, 01700 MIRIBEL (France)
Contacts :
Stéfan Colombano, [email protected] ; Maxime Cochennec, [email protected] ; Amir Alamooti, [email protected] ; Laurent Oxarango, [email protected] ; Hugues Bodiguel, [email protected] ; Arnault Perrault, [email protected]
- Languages
- FRENCH
- Level
- Good
Additional Information
Benefits
In an environment that is conducive to work/life balance, thanks in particular to teleworking, BRGM stands out for its caring and friendly atmosphere.
HRS4R accredited in 2021, our aim is to support you throughout your professional life at BRGM. We offer a wide range of facilities to help you develop your skills and expertise, with opportunities for career development and geographical mobility.
At BRGM, you will enjoy a number of benefits, such as time off work, company restaurant, holiday and leisure benefits, etc.
BRGM guarantees a transparent recruitment procedure. To apply, send us your application (updated CV and covering letter) by 11/04/2024.
Please note that all our posts are open to all, because at BRGM we are committed to diversity!
We will consider your application as soon as the vacancy has been advertised. If your application is successful, we will contact you for recruitment interviews during which you will talk to the recruiting management, the HR department and a cross-functional department.
Work Location(s)
- Number of offers available
- 1
- Company/Institute
- BRGM
- Country
- France
- City
- Orléans
- Geofield
Where to apply
- Website
https://brgm-recrute.talent-soft.com/job/emploi-these-nanomousse-vectorisation-…
Contact
- City
Orléans cedex 2- Website
https://www.brgm.fr/- Street
3, Avenue C. Guillemin BP 6009- Postal Code
45060
[email protected]
STATUS: EXPIRED