| Summary: | 碩士 === 淡江大學 === 化學工程學系 === 88 === The reaction of urea and urease is used to study the performance of the hollow-fiber membrane reactors with two different arrangement types. The transport of species through the membrane by diffusion and convection, and the inhibition effect on the enzyme were taken into account.
In the theoretical analysis, both the reactor systems with different arrangements were divided into five well-mixed regions and two plug flow reactors. Considering diffusive and convective transports, reaction production and inhibition effect in each region, a set of ordinary differential equations for species was obtained and then solved by numerical method. Thus, the change of the concentrations of urea and ammonium carbonate under different operating conditions could be obtained.
The experiments were carried out in a batch-type system under various operating conditions, such as inlet flow rate, inlet concentration of urea, and concentration of urease. The results show that the concentration of ammonium carbonate increases with the flow rate, inlet concentration of urea and concentration of urease. The hollow-fiber membrane reactor with type I arrangement is better than type II in production yield.
|
|---|
