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Title: Dynamic bed reactor

A dynamic bed reactor is disclosed in which a compressible open cell foam matrix is periodically compressed and expanded to move a liquid or fluid through the matrix. In preferred embodiments, the matrix contains an active material such as an enzyme, biological cell, chelating agent, oligonucleotide, adsorbent or other material that acts upon the liquid or fluid passing through the matrix. The active material may be physically immobilized in the matrix, or attached by covalent or ionic bonds. Microbeads, substantially all of which have diameters less than 50 microns, can be used to immobilize the active material in the matrix and further improve reactor efficiency. A particularly preferred matrix is made of open cell polyurethane foam, which adsorbs pollutants such as polychlorophenol or o-nitrophenol. The reactors of the present invention allow unidirectional non-laminar flow through the matrix, and promote intimate exposure of liquid reactants to active agents such as microorganisms immobilized in the matrix.
Inventors:
 [1]
  1. (Moscow, ID)
Issue Date:
OSTI Identifier:
870492
Assignee:
Idaho Research Foundation, Inc. (Moscow, ID) IDO
Patent Number(s):
US 5531897
Application Number:
07/960,963
Contract Number:
FG07-89ER60847
Research Org:
University of Idaho
Country of Publication:
United States
Language:
English
Subject:
dynamic; bed; reactor; disclosed; compressible; cell; foam; matrix; periodically; compressed; expanded; move; liquid; fluid; preferred; embodiments; contains; active; material; enzyme; biological; chelating; agent; oligonucleotide; adsorbent; passing; physically; immobilized; attached; covalent; ionic; bonds; microbeads; substantially; diameters; 50; microns; immobilize; improve; efficiency; particularly; polyurethane; adsorbs; pollutants; polychlorophenol; o-nitrophenol; reactors; allow; unidirectional; non-laminar; flow; promote; intimate; exposure; reactants; agents; microorganisms; particularly preferred; fluid passing; cell foam; polyurethane foam; preferred embodiments; bed reactor; active material; preferred embodiment; chelating agent; laminar flow; liquid reactant; periodically compressed; active agents; biological cell; dynamic bed; liquid reactants; /210/

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