Microfiltration (MF) of a Semi-synthetic Metalworking Fluid (MWF) Using Regenerated Cellulose (RC) and Mixed Cellulose Ester (MCE) Polymeric Membranes
This research addresses the feasibility of purification of a semi-synthetic metalworking fluid (MWF) through microfiltration (MF). Regenerated cellulose (RC) and mixed cellulose ester (MCE) polymeric membranes were used to filter a 5% volume (v/v) solution of Castrol 6519, a commercially used semi-synthetic MWF. A pressurizing reservoir, set at 7 pounds per square inch (psi), was used to facilitate the flow of the MWF through the desired membrane supported in a stirred cell. The flux of Castrol 6519 MWF was determined by weighing the permeate in a receiving flask interfaced to a computer. Periodically, filtrate and retentate samples were collected and their refractive indices measured. The fouling of the membrane, as determined from the time dependent flow rate and Scanning Electron Microscope (SEM) images, was analyzed and evaluated.
Clark Atlanta University
Chemistry and Mathematics
Dr. Nandakishore Rajagopalan
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