Semester

Fall

Date of Graduation

1998

Document Type

Thesis

Degree Type

MS

College

Statler College of Engineering and Mineral Resources

Department

Civil and Environmental Engineering

Committee Chair

Roger C. Viadero.

Abstract

Large volumes of spent oil-in-water emulsions are produced in the metal working (MW) industry. In high-shear rotary ultrafiltration (HSR-UF), disk membranes are rotated at speeds up to 1,750 rpm to generate hydraulic turbulence, which scours the membrane surface. Thus, the pump is required only to provide transmernbrane pressure and a small amount of recirculation.;A parametric waste-specific study was conducted to assess the ability of the resistance-in-series (RIS) permeate flux model to predict pressure-flux data collected in the HSR-UF of a synthetic MW fluid. Experiments were conducted using a pilot-scale HSR-UF system with a 0.11 mum average-pore size membrane at a single temperature operating temperature of 110°F. Experiments were conducted at discrete membrane rotational speed/MW fluid concentration combinations over an applied pressure range of 103 to 517 kPa (15 to 75 psig), membrane rotational speeds of 1,150 to 1,750 rpm, and synthetic MW fluid concentrations of 5 to 40% MW fluid.;The RIS model was modified to include membrane rotational speed and oil concentration terms in order to predict the permeate flux at any given transmembrane pressure, rotational speed, and oil concentration. (Abstract shortened by UMI.).

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