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TECHNICAL PAPERS

Ingredient-Wise Study of Flux Characteristics in the Ceramic Membrane Filtration of Uncontaminated Synthetic Metalworking Fluids, Part 2: Analysis of Underlying Mechanisms

[+] Author and Article Information
Steven J. Skerlos, Richard E. DeVor, Shiv G. Kapoor

Department of Mechanical and Industrial Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801

N. Rajagopalan

Illinois Waste Management and Research Center, University of Illinois at Urbana-Champaign, Urbana, IL 61801

V. Don Angspatt

IRMCO Advanced Lubricant Technologies, Evanston, IL 60201

J. Manuf. Sci. Eng 122(4), 746-752 (Nov 01, 1999) (7 pages) doi:10.1115/1.1286131 History: Received March 01, 1999; Revised November 01, 1999
Copyright © 2000 by ASME
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References

Mahdi,  S. M., and Sköld,  R. O., 1991, “Experimental Study of Membrane Filtration for the Recycling of Synthetic Water-Based Metalworking Fluids,” Tribol. Int. , 24, pp. 389–395.
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Mahdi,  S. M., and Sköld,  R. O., 1990, “Surface Chemistry Aspects on the Use of Ultrafiltration for the Recycling of Waterbased Synthetic Metalworking Fluids: Components Studies,” J. Dispers. Sci. Technol., 11, pp. 1–30.
Misra,  S. K., and Sköld,  R. O., 1999, “Membrane Filtration Studies of Inversely Soluble Model Metalworking Fluids,” Sep. Sci. Technol., 34, pp. 53–67.
Belfort,  G., Davis,  R. H., , 1994, “The Behavior of Suspensions and Macromolecular Solutions in Crossflow Microfiltration,” J. Membr. Sci., 96, pp. 1–58.
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Levine,  S., and Marriott,  R., 1975, “Theory of Electrokinetic Flow in Fine Cylindrical Capillaries at High Zeta-Potentials,” J. Colloid Interface Sci., 52, pp. 136–149.
Bowen,  W. R., and Cao,  X., 1998 “Electrokinetic Effects in Membrane Pores and the Determination of Zeta-Potential,” J. Membr. Sci., 140, pp. 267–273.
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de Gennes,  P. G., 1980, “Conformations of Polymers Attached to an Interface,” Macromolecules, 13, pp. 1069–1075.
Marques,  C., Joanny,  J. F., and Leibler,  L., 1988, “Adsorption of Block Copolymers in Selective Solvents,” Macromolecules, 21, pp. 1051–1059.
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Figures

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Types of physical obstruction to permeation. (a) Pore constriction due to adsorption. (b) Pore blocking due to physical lodging of particulate. (c) Cake formation due to size-exclusion.
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Electron microscopy images of pore blocking and cake formation. (a) Example of pore blocking caused by 0.22 μm polystyrene beads on a membrane of 0.20 μm pore size. (b) Transition region between cake layer formed by a 0.025 percent dispersion of defoamer in water and portion of membrane not exposed to defoamer.
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Illustration of the concentration polarization phenomenon and characteristic flux vs. pressure response
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Linear and higher-order models for steady-state flux vs. pressure data. Also, comparison of steady-state flux vs. pressure (A1–A6) to transient flux vs. pressure after steady-state flux was achieved at 40 psi (A7).
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FE-ESEM image of an aluminum oxide membrane exposed to synthetic MWF (5 percent) compared to a new membrane
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FE-ESEM image of an aluminum oxide membrane exposed to synthetic MWF (5 percent) compared to similar membrane exposed to lubricant additive (0.25 percent)
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Flux vs. pressure of base fluid mixture in a new membrane (Experiment C7) vs. after significant exposure to specialty additives (Experiment A27)

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