Desorption Behavior of Surfactant Mixtures at the Alumina–Water Interface

New technique based on the use of tritium labeled compounds for studying the adsorption of surfactant mixtures

“…The synergistic effect was attributed to interactions between the hydrocarbon chains of components in adsorption layers. 12,16,17 At high concentrations the synergistic effect disappears, as supposed, due to mixed micelle formation. At these concentrations, surfactant mixtures already contain micelles, but for pure TTAB it corresponds to monomer solution.…”

“…Such an increase of adsorption at the concentration region corresponding to transition from monolayer formation to surface clustering was observed. 15,16 Adsorption values of TX-100-TTAB mixtures demonstrate that, at C eq » 10 -4 mol dm -3 , A comparison of adsorption isotherms of single and mixed solutions indicates that TX-100 and TTAB exhibit a synergistic effect at C eq = 5×10 -5 -10 -4 mol dm -3 (the initial stage of adsorption isotherms is shown in the insert of Figure 1). The synergistic effect was attributed to interactions between the hydrocarbon chains of components in adsorption layers.…”

“…[9][10][11][12] Frequently, a combination of several methods is used for the investigation of surfactant mixture adsorption. [10][11][12][13][14][15][16][17] The great practical importance of this problem (for instance, in froth flotation, detergency, solids disruption, oil recovery etc.) and its poor theoretical understanding require the development of new techniques for the determination of adsorption and the composition of mixed adsorption layers.…”

Adsorption of cationic and nonionic surfactants on a SiO2 surface from aqueous solutions: 2. Adsorption of dodecylpyridinium bromide and Triton X-100 from mixed solutions

“…Commonly, researchers confine themselves to the combinations of surfactant mixtures in which one of the components is practically not adsorbed on a solid surface from its individual solution, thus simplifying the interpretation of results obtained. However, the analysis of published data [1][2][3][4][5][6][7][8] demonstrates that both synergism, i.e., an increase in the adsorption of the components of a mixture compared to their adsorption from individual solutions, and competitive adsorption are observed in mixed systems.…”

Efficient multicyclic sorption and desorption of lead ions on facilely prepared poly(m-phenylenediamine) particles with extremely strong chemoresistance

“…Most of the desorption studies are mainly focused on several kinds of mineral adsorbents such as soil particles [6][7][8], inorganic mineral oxides [9][10][11][12][13], and biosorbents [14][15][16]. The desorption process of the metal ions from the microparticle sorbents is comparably simple and the eluants used in their chemical regeneration including inorganic acid [12,17,18], inorganic salt [15], alkaline [15,19], complex reagent [13,14] and organic acids [12] have been widely reported.…”