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Effective oxygen-consumption rates in fermentation broths with filamentous organisms

Conference:

Abstract

The concept of coupling molecular diffusion and reaction has been applied in the past to various biological systems with clearly defined geometrical properties like pellets and immobilised enzymes/microorganisms. This paper investigates the use of the same principle to characterise the diffusional limitation in suspensions of filamentous microorganisms. Experimental results of oxygen-uptake measurements from Aspergillus niger fermentations in a 50 cu.dm turbine-agitated fermentor are presented with theoretical predictions of coupled diffusion and oxygen kinetics. Results are discussed on the basis of turbulence theory so that the mycelial broth can be structured in hypothetical spherical elements. Consideration of local energy-dissipation rates in the impeller region provides reasonable explanation of the strong influence of the impeller/tank diameter ratio on the effective oxygen-uptake rate at a given power input. (Refs. 18).
Publication Date:
Jan 01, 1982
Product Type:
Conference
Report Number:
CONF-8104169-
Reference Number:
EDB-82-154836
Resource Relation:
Journal Name: J. Chem. Technol. Biotechnol.; (United Kingdom); Journal Volume: 32:1; Conference: 2. European congress of biotechnology, Eastbourne, UK, 5 Apr 1981
Subject:
09 BIOMASS FUELS; ASPERGILLUS; RESPIRATION; BIOCHEMICAL REACTION KINETICS; MATHEMATICAL MODELS; FERMENTATION; CHEMICAL REACTORS; DIFFUSION; IMMOBILIZED ENZYMES; KINETICS; MICROORGANISMS; OXYGEN; SIMULATION; SUBSTRATES; BIOCONVERSION; ELEMENTS; FUNGI; NONMETALS; PLANTS; REACTION KINETICS; 140504* - Solar Energy Conversion- Biomass Production & Conversion- (-1989)
OSTI ID:
5055495
Research Organizations:
Inst fuer Gaerungsgewerbe und Biotechnologie and TU Berlin, Seestrasse 13, D-1000 Berlin 65, West Germany
Country of Origin:
United Kingdom
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: JCTBD
Submitting Site:
HEDB
Size:
Pages: 81-91
Announcement Date:

Conference:

Citation Formats

Reuss, M, Bajpai, R K, and Berke, W. Effective oxygen-consumption rates in fermentation broths with filamentous organisms. United Kingdom: N. p., 1982. Web.
Reuss, M, Bajpai, R K, & Berke, W. Effective oxygen-consumption rates in fermentation broths with filamentous organisms. United Kingdom.
Reuss, M, Bajpai, R K, and Berke, W. 1982. "Effective oxygen-consumption rates in fermentation broths with filamentous organisms." United Kingdom.
@misc{etde_5055495,
title = {Effective oxygen-consumption rates in fermentation broths with filamentous organisms}
author = {Reuss, M, Bajpai, R K, and Berke, W}
abstractNote = {The concept of coupling molecular diffusion and reaction has been applied in the past to various biological systems with clearly defined geometrical properties like pellets and immobilised enzymes/microorganisms. This paper investigates the use of the same principle to characterise the diffusional limitation in suspensions of filamentous microorganisms. Experimental results of oxygen-uptake measurements from Aspergillus niger fermentations in a 50 cu.dm turbine-agitated fermentor are presented with theoretical predictions of coupled diffusion and oxygen kinetics. Results are discussed on the basis of turbulence theory so that the mycelial broth can be structured in hypothetical spherical elements. Consideration of local energy-dissipation rates in the impeller region provides reasonable explanation of the strong influence of the impeller/tank diameter ratio on the effective oxygen-uptake rate at a given power input. (Refs. 18).}
journal = {J. Chem. Technol. Biotechnol.; (United Kingdom)}
volume = {32:1}
place = {United Kingdom}
year = {1982}
month = {Jan}
}