Relation between oxidation kinetics and reactant transport in an aqueous foam

Trinh, Pierre; Mikhailovskaya, Alesya; Lefèvre, Grégory; Pantoustier, Nadège; Perrin, Patrick; Lorenceau, Élise; Dollet, Benjamin; Monteux, Cécile

doi:10.1016/j.jcis.2023.03.140

Cited by 2 publications

(2 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is very useful, since it quantifies the efficiency of gas transfer through a foam. 29 If we neglect the solubility of gas 2 compared to that of gas 1, the continuous model takes the form of a nonlinear diffusion equation, from (11…”

Section: ■ Theorymentioning

confidence: 99%

See 1 more Smart Citation

Coarsening of Foams Driven by Concentration Gradients of Gases of Different Solubilities

Dollet

2023

Langmuir

Self Cite

View full text Add to dashboard Cite

The evolution of a foam driven by the transfer of two gases of different solubilities across the soap films is studied. A bamboo foam, or a train of films, is used as a model system; it is made of a poorly soluble gas and put into contact with a reservoir of a soluble gas at an initial time. The measurement of the time evolution of the volume of each bubble shows that the foam swells as it progressively incorporates the soluble gas. The dynamics is modeled from the gas fluxes across each film. The continuous limit of this model at a large number of bubbles is studied in detail: it gives an effective nonlinear diffusion equation, which fits the data very well. The corresponding diffusion constant, given by the product of the permeability of the soluble gas and the initial size of the bubbles, is shown to be the key parameter governing the coarsening dynamics of the foam.

show abstract

Section: ■ Theorymentioning

confidence: 99%

“…This coefficient is proportional to the typical size of the bubbles because each gas/liquid interface to be crossed in the direction of the gas composition gradient acts as a barrier for the gas transfer. It is very useful, since it quantifies the efficiency of gas transfer through a foam …”

Section: Theorymentioning

confidence: 99%