@article{scholars16914,
            year = {2022},
         journal = {Molecules},
       publisher = {MDPI},
          number = {7},
            note = {cited By 11},
          volume = {27},
             doi = {10.3390/molecules27072265},
           title = {Interfacial Properties, Wettability Alteration and Emulsification Properties of an Organic Alkali{\^a}??Surface Active Ionic Liquid System: Implications for Enhanced Oil Recovery},
            issn = {14203049},
          author = {Tackie-Otoo, B. N. and Mohammed, M. A. A. and Zalghani, H. A. B. M. and Hassan, A. M. and Murungi, P. I. and Tabaaza, G. A.},
        abstract = {Combinatory flooding techniques evolved over the years to mitigate various limitations associated with unitary flooding techniques and to enhance their performance as well. This study investigates the potential of a combination of 1-hexadecyl-3-methyl imidazolium bromide (C16mimBr) and monoethanolamine (ETA) as an alkali{\^a}??surfactant (AS) formulation for enhanced oil recovery. The study is conducted comparative to a conventional combination of cetyltrimethylammonium bromide (CTAB) and sodium metaborate (NaBO2 ). The study confirmed that C16mimBr and CTAB have similar aggregation behaviors and surface activities. The ETA{\^a}??C16mimBr system proved to be compatible with brine containing an appreciable concentration of divalent cations. Studies on interfacial properties showed that the ETA{\^a}??C16mimBr system exhibited an improved IFT reduction capability better than the NaBO2{\^a}??CTAB system, attaining an ultra-low IFT of 7.6 {\~A}? 10{\^a}??3 mN/m. The IFT reduction performance of the ETA{\^a}??C16mimBr system was improved in the presence of salt, attaining an ultra-low IFT of 2.3 {\~A}? 10{\^a}??3 mN/m. The system also maintained an ultra-low IFT even in high salinity conditions of 15 wt NaCl concentration. Synergism was evident for the ETA{\^a}??C16mimBr system also in altering the carbonate rock surface, while the wetting power of CTAB was not improved by the addition of NaBO2 . Both the ETA{\^a}??C16mimBr and NaBO2{\^a}??CTAB systems proved to form stable emulsions even at elevated temperatures. This study, therefore, reveals that a combination of surface-active ionic liquid and organic alkali has excellent potential in enhancing the oil recovery in carbonate reservoirs at high salinity, high-temperature conditions in carbonate formations. {\^A}{\copyright} 2022 by the authors. Licensee MDPI, Basel, Switzerland.},
        keywords = {alkali; carbonic acid; cetrimide; ionic liquid, surface tension; wettability, Alkalies; Carbonates; Cetrimonium; Ionic Liquids; Surface Tension; Wettability},
             url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85128010851&doi=10.3390\%2fmolecules27072265&partnerID=40&md5=a206c3446034d1c3ae6c8e3cbc19cfee}
}