Ultrafiltration of Raw Sewage Using an Immobilized Enzyme Membrane.

Abstract

Ultrafiltration of raw sewage was performed using multiple-enzymes immobilized on non-cellulosic, ultrafiltration membranes. An increase of 12% in the permeate flux rate at quasi-steady state was observed due to the action of the immobilized enzymes. Enzymes were immobilized by physical sorption to minimize the loss of ultrafiltration capability of the membrane, due to immobilization process. A mathematical model based on diffusive transport and enzymatic action was presented. A standard Marquardt algorithm and a fourth-order Runge-Kutta integration routine were used for estimation of the non-linear parameters in the model. Comparing data presented here to the data reported earlier on the ultrafiltration on NFDM (non-fat, dry milk), it was found that the enzyme-membrane has a longer half-life for the NFDM case than for the raw sewage case. Furthermore, the first-order enzyme decay rate is much faster in the multiple enzyme system used in raw sewage filtration than the single enzyme system used in the ultrafiltration of NFDM. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1979
Accession Number
ADA074804

Entities

People

  • Burton Davidson
  • C. Y. Jeng
  • Shaw S. Wang

Organizations

  • Rutgers University–New Brunswick

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Boundary Layer
  • Differential Equations
  • Electron Microscopes
  • Electrons
  • Enzymes
  • Equations
  • Experimental Data
  • Flow
  • Fluid Dynamics
  • Immobilized Enzymes
  • Mass Transfer
  • Models
  • Scanning Electron Microscopes
  • Steady State
  • Ultrafiltration
  • United States
  • Viscous Flow

Readers

  • Analytical Chemistry
  • Environmental Engineering
  • Fluid Dynamics.