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- W44513254 abstract "The operation of a three-phase fluidized-bed bioreactor for removing phenol from wastewater was studied. The reactor system consisted of a bacterial population (predominantly pseudomonads) attached to inert coal particles, which was fluidized by a stream of simulated wastewater containing approximately 0.1 g/L phenol. Oxygen was bubbled through the reactor to support the aerobic bacteria. The kinetics of phenol degradation by the attached organisms was investigated in batch shake-flask experiments. The rate of phenol degradation showed a first-order dependence on phenol concentration at high-oxygen concentrations (P/sub O/sub 2// = 1 atm) and a zero-order dependence on phenol at low-oxygen concentrations (P/sub O/sub 2// less than or equal to 0.2 atm). The kinetic data were well-described by a competitive inhibition model. The reactor was modeled as well-mixed with gas-liquid interfacial mass-transfer limitations. The model predicted an optimal value for the mass-transfer coefficient, above which oxygen inhibition reduces performance and below which mass-transfer limitations occur. Comparison of reactor operating data with model predictions showed that the liquid phase of the reactor was well-mixed and that the reaction rate was limited by the mass transfer of oxygen from the gaseous to the liquid phase. The mass-transfer component should be increased for more efficient reactormore » operation.« less" @default.
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- W44513254 date "1983-06-01" @default.
- W44513254 modified "2023-09-27" @default.
- W44513254 title "Phenol degradation in a three-phase fluidized-bed bioreactor" @default.
- W44513254 hasPublicationYear "1983" @default.
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