hexacyanoferrate-iii has been researched along with hydroxide-ion* in 1 studies
1 other study(ies) available for hexacyanoferrate-iii and hydroxide-ion
| Article | Year |
|---|---|
Designing an enzymatic oscillator: bistability and feedback controlled oscillations with glucose oxidase in a continuous flow stirred tank reactor.
The reaction of glucose with ferricyanide catalyzed by glucose oxidase from Aspergillus niger gives rise to a wide range of bistability as the flow rate is varied in a continuous flow stirred tank reactor. Oscillations in pH can be obtained by introducing a negative feedback on the autocatalytic production of H+ that drives the bistability. In our experiments, this feedback consists of an inflow of hydroxide ion at a rate that depends on [H+] in the reactor as k0[OH-]0[H+]/(K+[H+]). pH oscillations are found over a broad range of enzyme and ferricyanide concentrations, residence times (k0 (-1)), and feedback parameters. A simple mathematical model quantitatively accounts for the experimentally found oscillations. Topics: Aspergillus niger; Bioreactors; Catalysis; Computer Simulation; Enzyme Stability; Feedback; Ferricyanides; Glucose; Glucose Oxidase; Hydrogen-Ion Concentration; Hydroxides; Models, Theoretical; Oscillometry | 2006 |