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Characterizing mixing in a rotating drum bioreactor for solid-state fermentation |
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| Authors: | AJ Marsh DM Stuart DA Mitchell T Howes |
| Institution: | (1) Department of Chemical Engineering, The University of Queensland, Brisbane, Queensland, 4072, Australia;(2) School of Natural Resource Sciences, Queensland University of Technology, Brisbane, Queensland, 4001;(3) Departamento de Solos, Setor de Ci^encias Agrárias, Universidade Federal do Paraná, Rua dos Funcionários 1540, Juvev^e, Curitiba, 80035-050 Paraná, Brazil |
| Abstract: | A method, based on the use of wheat bran particles dyed with Rhodamine-WT as tracer particles, was developed to characterize mixing in a 200 l rotating drum bioreactor used for solid state fermentation. The extraction process contributes a 15% relative error in determining Rhodamine concentrations. Extraction efficiency is not affected by autoclaving of the bran and there is no inter-particle transfer of dye during the mixing of bran within the drum. For an unbaffled drum rotated at 5 rpm the axial dispersion coefficient is 9.15 cm2 min–1. |
| Keywords: | axial dispersion Rhodamine rotating drum bioreactor solid-state fermentation |
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