Innovative use of lipid mesophase dispersions for bisphenol A sequestration in water - Archive ouverte HAL
Article Dans Une Revue Journal of Colloid and Interface Science Année : 2025

Innovative use of lipid mesophase dispersions for bisphenol A sequestration in water

Résumé

Hypothesis: Mesophase dispersions are promising colloids for removing micropollutants from water. We hypothesized that the complex internal nanostructure and tunable lipid/water interface amounts play a crucial role in absorbed quantities. Modifications in interfacial organization within the particles while trapping the micro-pollutant is assumed. Experiments: We formulated stable monolinolein-based dispersions with four types of mesophases (bicontinuous and micellar cubic, hexagonal, and fluid isotropic L2) by varying dodecane contents. The absorption of bisphenol A by these dispersions from water was monitored using molecular spectroscopy. At equilibrium, absorbed quantities by mesophase dispersions were compared to unstructured dodecane/water miniemulsions for two bisphenol concentrations. Structural changes during bisphenol incorporation were identified using small-angle X-ray scattering. Findings: Lipid mesophase particles of submicron size showed greater bisphenol incorporation than dodecane/water miniemulsions, with cubosomes being most effective ones, absorbing twice as much as unstructured emulsions. Higher absorption levels are observed for more complex nanostructures with increased lipid/dodecane ratios. The incorporation of bisphenol affected the curvature of internal interfaces, potentially causing phase transitions and indicating that bisphenol settles at interfaces. Similar absorption levels in identical mesophases suggest a strong correlation between nano-structure and absorbed quantities.
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Dates et versions

hal-04761910 , version 1 (31-10-2024)

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Samuel Guillot, Sandrine Delpeux, Fabienne Méducin, Aude Gagner, Fatokhoma Camara, et al.. Innovative use of lipid mesophase dispersions for bisphenol A sequestration in water. Journal of Colloid and Interface Science, 2025, 679, pp.849-859. ⟨10.1016/j.jcis.2024.10.126⟩. ⟨hal-04761910⟩
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