The Foaming Behavior and Synergistic Effect in Aqueous CO2 Foam by In Situ Physisorption of Alpha Olefin Sulfonate and Triton X-100 Surfactants and Their Mixture

Abstract

Foaming behavior is an important consideration in the design of many foam-based operations and processes. The foam behavior and synergistic effect of aqueous CO2 by the single anionic surfactant alpha olefin sulfonate (AOS), nonionic single surfactant Triton X-100 (TX100), and mixed surfactant solution (AOS-TX100) with varying concentrations were investigated in detail. The role of each surfactant and mixed surfactant solutions were analyzed in view of the foamability, foam stability, and synergistic effect after equilibrium of aqueous CO2 foam. It was found that AOS and the composite surfactant AOS-TX100 (8:2) had better foaming behavior than any single surfactant and mixed surfactants.