Nahid P. Khiabani - Department of Chemical Engineering, University of Tehran, Tehran ۱۱۳۶۵-۴۵۶۳, Iran, R&D Department, Bonian Daneshpajouhan Institute, Gholhak Junc., Tehran, Iran
Zahra Fakhroueian - Department of Chemical Engineering, University of Tehran, Tehran ۱۱۳۶۵-۴۵۶۳, Iran
Peyman Pourafshary - School of Mining and Geosciences, Nazarbayev University, Nur-Sultan, Kazakhstan
Alireza Bahramian - Department of Chemical Engineering, University of Tehran, Tehran ۱۱۳۶۵-۴۵۶۳, Iran,

The interfacial properties of liquid-liquid and solid-liquid interfaces play essential roles in the efficiency of different processes. For example, in some current methods, these properties are crucial for oil recovery. They are applied in different oil recovery methods using low salinity water, nanoparticles (NPs), and surfactants. These options are environmentally friendly and inexpensive agents. In this way, we prepared a MgO nanofluid applying for a free imbibition test. The base of the nanofluid is water. We found more than ۷۰% of oil recovery at the temperature of ۷۰œC. Furthermore, the interfacial tension (IFT) change and wettability alteration (WA) mechanisms were compared

Green Nanofluid, Free imbibition, Crystal growth, Wetting, Contact angle, Microemulsion.