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Bioprocess Engineering 2nd Edition by Fikret Kargi,Michael Shuler
Edition 2ISBN: 9780130819086Bioprocess Engineering 2nd Edition by Fikret Kargi,Michael Shuler
Edition 2ISBN: 9780130819086 Exercise 12
Urea dissolved in aqueous solution is degraded to ammonia and CO₂ by the enzyme urease
immobilized on surfaces of nonporous polymeric beads. Conversion rate is controlled by
transfer of urea to the surface of the beads through liquid film, and the conversion takes place
on the surfaces of the beads. The following parameters are given for the system.
support surface -s. 
= 1000 mg urea/l
a. Determine the surface concentration of urea.
b. Determine the rate of urea degradation under mass transfer controlled conditions.
immobilized on surfaces of nonporous polymeric beads. Conversion rate is controlled by
transfer of urea to the surface of the beads through liquid film, and the conversion takes place
on the surfaces of the beads. The following parameters are given for the system.
support surface -s. = 1000 mg urea/l a. Determine the surface concentration of urea.
b. Determine the rate of urea degradation under mass transfer controlled conditions.
Explanation
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a) Under the given conditions the surfac...
Bioprocess Engineering 2nd Edition by Fikret Kargi,Michael Shuler
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