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Liquid–solid mass transfer in a two phase fluidized bed bioreactor
Liquid–solid mass transfer in a two phase liquid–solid anoxic fluidized bed bioreactor used for biological denitrification has been studied. The denitrification microorganism, immobilized on plastic beads was used as fluidization media. The denitrification rate under different operating conditions w...
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Published in: | Chemical engineering journal (1996) 2008-01, Vol.135 (1), p.135-140 |
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Main Authors: | , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | Liquid–solid mass transfer in a two phase liquid–solid anoxic fluidized bed bioreactor used for biological denitrification has been studied. The denitrification microorganism, immobilized on plastic beads was used as fluidization media. The denitrification rate under different operating conditions was studied and was found to follow zero order kinetics with respect to substrate. The results of experimental work were used to simulate a biofilm model for the evaluation of liquid–solid mass transfer coefficient using the value of concentration obtained at the biofilm surface. The effect of parameters like liquid flow rate and biofilm thickness on mass transfer coefficient were studied. A functional relationship relating Sherwood number to Reynolds and Schmidt number is obtained by regression analysis as
Sh
=
Re
0.5985
Sc
0.2048. |
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ISSN: | 1385-8947 1873-3212 |
DOI: | 10.1016/j.cej.2007.04.020 |