Journal
BIOTECHNOLOGY LETTERS
Volume 22, Issue 6, Pages 473-477Publisher
KLUWER ACADEMIC PUBL
DOI: 10.1023/A:1005675703617
Keywords
axial dispersion; Rhodamine; rotating drum bioreactor; solid-state fermentation
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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 cm(2) min(-1).
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