Publications by authors named "F Lion"
Article Synopsis
- Conventional in-situ hydrocarbon remediation technologies struggle with high costs and limited effectiveness, making aqueous foam injection a more promising solution for better volumetric sweeping efficiency.
- This study focuses on polymer-enhanced foams (PEFs), specifically examining how Xanthan Gum (XG) biopolymer affects foam stability and flow in contaminated soils, using two types of PEFs: one based on Sodium Dodecyl Sulfate (SDS) and another blending SDS with Cocamidopropyl Hydroxysultane (SC).
- Results show that XG enhances foam stability through increased viscosity and improved interactions with surfactants, leading to higher recovery rates of hydrocarbons compared to traditional methods, suggesting a valuable avenue for future remediation efforts
Article Synopsis
- Remediation of PFAS-contaminated soils is complex because of PFAS compounds' distinct properties, like variable solubility and resistance to breakdown.
- Using non-Newtonian fluids, like an ethanol/xanthan mixture (XE), can enhance the efficiency of in-situ soil flushing for these contaminants.
- Lab tests showed that XE significantly improved recovery rates of PFAS, with over 99% recovery for most compounds, demonstrating the potential of this method for treating contaminated soils.
Aqueous foam injection is a promising technique for in-situ remediation of soil and aquifers contaminated by petroleum products. However, the application efficiency is strongly hindered by foam's instability upon contact with hydrocarbons. Addressing this, we propose a new binary surfactant mixture of Sodium Dodecyl Sulfate (SDS) and Cocamidopropyl Hydroxysultaine (CAHS).
View Article and Find Full Text PDFConsore: A Powerful Federated Data Mining Tool Driving a French Research Network to Accelerate Cancer Research.
Int J Environ Res Public Health
February 2024
Background: Real-world data (RWD) related to the health status and care of cancer patients reflect the ongoing medical practice, and their analysis yields essential real-world evidence. Advanced information technologies are vital for their collection, qualification, and reuse in research projects.
Methods: UNICANCER, the French federation of comprehensive cancer centres, has innovated a unique research network: Consore.
Although polymer-surfactant injection is an effective remediation technology for multilayer aquifers contaminated by Dense Non-Aqueous Phase Liquids (DNAPL), the existence of residual DNAPL after treatment is inevitable. This study evaluates the efficiency of the post-injection of alcohol-surfactant-polymer (ASP) mixtures containing 1-propanol/1-hexanol, sodium dodecylbenzenesulfonate (SDBS), and xanthan in enhancing remediation of residual DNAPL in layered systems. A range of experimental devices, including batch, rheological measurements, centimetric 1D column, and decametric 2D tank experiments, were employed.
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