ArticleRSC advances2026
Mechanistic evaluation of static and dynamic adsorption of
Article in RSC advances, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
The adsorption of surfactants onto reservoir rock surfaces significantly affects the efficiency of enhanced oil recovery (EOR), as high retention reduces the effective concentration of surfactants during flooding. In the present study, the adsorption behaviour of synthesized Gemini surfactants (GS) on sandstone and carbonate rocks was evaluated using UV-vis spectroscopy under static and dynamic conditions. Equilibrium isotherm and kinetic models were applied to interpret the adsorption trends and assess the governing adsorption pathways. FESEM-EDX was employed to assess surface morphology and elemental mapping, while zeta potential measurements indicated charge modification. The static adsorption results showed that surfactant retention systematically decreased with increasing spacer length, indicating reduced packing efficiency for longer spacer Gemini structures. Dynamic adsorption shows very low surfactant retention, with maximum adsorption capacities of 0.013 mg g
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