Study of Average Static Hold-up Along a Rotary Disc Contactor in the Presence of Nanoparticles

چکیده مقاله

Regarding the important role of static hold-up in both hydrodynamic and mass transfer rate in extraction columns, average static hold-up has been studied in a Rotary Disc Contactor (RDC) as a function of rotor speed, average mother drop size and number of stages using several chemical systems. In the light of the promising potential of nano- fluids in mass transfer applications, in a quite novel investigation, nanofluids were ap- plied as dispersed phases to the RDC column. Two types of SiO2 nanoparticles with different hydrophobicities were employed in nanofluids preparation, which stabilities were appraised by sedimentation method and UV-vis spectrophotometry. Transmission Electron Microscopy was also applied to examine the size and shape of SiO2 nanoparti- cles.