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Hydrodynamics and urea hydrolysis in a microencapsulated urease, fluidized bed reactor
Author(s) -
Dueck C. L.,
Neufeld R. J.,
Chang T. M. S.
Publication year - 1986
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450640403
Subject(s) - urease , urea , hydrolysis , fluidized bed , cellulose , chemistry , mixing (physics) , chemical engineering , precipitation , chromatography , membrane , materials science , organic chemistry , biochemistry , physics , meteorology , engineering , quantum mechanics
Urease was encapsulated in ultra‐thin, semi‐permeable cellulose nitrate membranes by simple interfacial precipitation. A fluidized bed reactor was designed and constructed for containing the shear sensitive urease microcapsules. The feasibility of maintaining high conversions of urea by providing an adequate mixing regime, while eliminating the damaging effects of shear was demonstrated. A reactor productivity of 0.7 mmoles urea/sL was observed at a superficial velocity of 3.3 × 10 −4 m/s using a simulated blood plasma solution. This represents a 44% conversion of urea.