A Review on the Separation Processes by Nanoparticle Stabilized Emulsion Liquid Membrane

Separation processes by emulsion liquid membrane are used in various processes of chemical and industrial wastewater treatment. Due to the importance of the stability of the emulsion during the separation process and the possibility of its easy breakdown in the final stage of the extraction operation, all kinds of emulsion stabilizers, including surfactants and solid emulsion solids, have always been introduced in numerous sources and articles, each of which benefits and has its own disadvantages. The problem of the stability or hardness of breaking the emulsion has made this process not used on an industrial scale. Therefore, in the present paper, the use of emulsion liquid membrane and solids solidified emulsions, which are referred to as emulsion pickering, are investigated.