The effects of biofilm characteristics on the external mass transfer coefficient in a differential fluidized bed biofilm reactor

doi:10.1016/S1369-703X(97)00010-7

Biochemical Engineering Journal

Volume 1, Issue 1, January 1998, Pages 53-61

https://doi.org/10.1016/S1369-703X(97)00010-7 Get rights and content

Abstract

A differential fluidized bed biofilm reactor (DFBBR) was used for the first time to evaluate the external mass transfer coefficient of phenol for a spherical bioparticle of Pseudomonas putida. The reaction kinetics in the biofilm was maintained at first order and respective culture kinetic parameters were assessed from a set of continuous fermenter experiments. The fluidized bed was operated under nearly fixed hydrodynamic conditions such as bed porosity and fluidization rate to study only the effects of biofilm thickness and density on mass transfer. The mass transfer coefficient was calculated with the analytical solution of effectiveness factor for the bioparticle using density-dependent effective diffusion coefficient. The results of the study revealed that the mass transfer coefficient increased with biofilm thickness at decreasing biofilm density values, which could not have been predicted by correlations in the literature. This increase may be attributed to increasing porosity and roughness of the biofilm surface.

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The effects of biofilm characteristics on the external mass transfer coefficient in a differential fluidized bed biofilm reactor

Abstract

J. Ferment. Bioeng.

Chem. Eng. Sci.

Chem. Eng. J. (Netherlands)

Chem. Eng. Sci.

Chem. Eng. Sci.

Int. J. Heat Mass Transfer

J. Biotechnol.

Water Res.

Water Res.

Water Sci. Technol.

Water Res.

Water Sci. Technol.

Modeling of phenol biodegradation in a fluidized-bed bioreactor

AIChE J.

Oxygen transfer and culture characteristics of self-immobilized Solanum aviculare aggregates

Biotech. Bioeng.

Wall-growth hollow-fiber reactors for tissue culture: I. preliminary experiments

Biotech. Bioeng.

Modeling of biological fixed films: a state of the art review

Fluidized bed fermenters: a steady state analysis

Biotech. Bioeng.

Analysis of a continuous aerobic, fixed-film bioreactor: I. steady state behavior

Biotech. Bioeng.

The calculation of simultaneous effective diffusion coefficients of the substrates in a fluidized bed biofilm reactor

Water Sci. Technol.

Diffusion coefficients of phenol and oxygen in a biofilm of Pseudomonas putida

AIChE J.

Fluidized bed biofilm reactor for wastewater treatment

A conceptual model of RBC performance

Biological Wastewater Treatment: Theory and Applications