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TECHNICAL PAPERS

Microfiltration of Polyoxyalkylene Metalworking Fluid Lubricant Additives Using Aluminum Oxide Membranes

[+] 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 48109

J. Manuf. Sci. Eng 123(4), 692-699 (Nov 01, 2000) (8 pages) doi:10.1115/1.1392993 History: Received March 01, 2000; Revised November 01, 2000
Copyright © 2001 by ASME
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References

Figures

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Flux of tetrasodium EDTA (10−2 M) and deionized water at pH of 5.5 and 10.5 after membrane exposure to anionic polyglycol, cleaning at 45°C, and rinsing with deionized water
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FE-ESEM image of membrane surface with anionic residual (a) at low pH (b) at elevated pH. Imaging conditions were identical with respect to working distance, magnification, beam voltage and size, and vacuum level.
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Normalized flux of selected salts at 10−2 M adjusted to pH=10.5 after membrane exposure to anionic polyglycol, cleaning, and rinsing. Data are normalized to water flux adjusted to pH=10.5 (approximately 800 LMH).
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Conceptual illustration of copolymer swelling at elevated pH
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Normalized flux of ethylene oxide/propylene oxide block copolymers in 0.25 percent solution at pH=10.5. Various salts added to copolymers after fourth flux measurement.
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Normalized flux of ethylene oxide/propylene oxide block copolymers in 0.25 percent solution at pH=5.5. Various salts added to copolymers after fourth measurement.

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