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200 Mohammad Ali Ahmadi
Figure 6.9 Schematic of adsorption of SDS on to carbonates: (A) standalone surfactant, (B) in pres-
ence of hydrophilic nanosilica, and (C) in presence of hydrophobic nanosilica [92]. SDS, sodium
dodecyl sulfate.
SDS adsorption on to carbonate surface. They proposed phenomena behind this
adsorption process as illustrated in Fig. 6.9. Moreover, Fig. 6.10 shows a graphical
illustration about aggregation of SDS around nanosilica particles, especially hydro-
philic ones. Aggregation of SDS around nanosilica resulted in reduction critical
