Title
Membrane-aerated biofilm reactor for the removal of 1,2-dichloroethane by Pseudomonas sp. strain DCA1
Author
Hage, J.C.
van Houten, R.T.
Tramper, J.
Hartmans, S.
Publication year
2004
Abstract
A membrane-aerated biofilm reactor (MBR) with a biofilm of Pseudomonas sp. strain DCA1 was studied for the removal of 1,2-dichloroethane (DCA) from water. A hydrophobic membrane was used to create a barrier between the liquid and the gas phase. Inoculation of the MBR with cells of strain DCA1 grown in a continuous culture resulted in the formation of a stable and active DCA-degrading biofilm on the membrane. The maximum removal rate of the MBR was reached at a DCA concentration of approximately 80 μM. Simulation of the DCA fluxes into the biofilm showed that the MBR performance at lower concentrations was limited by the DCA diffusion rate rather than by kinetic constraints of strain DCA1. Aerobic biodegradation of DCA present in anoxic water could be achieved by supplying oxygen solely from the gas phase to the biofilm grown on the liquid side of the membrane. As a result, direct aeration of the water, which leads to undesired coagulation of iron oxides, could be avoided. © Springer-Verlag 2004. Chemicals / CAS: 1,2 dichloroethane, 107-06-2; iron oxide, 1332-37-2; oxygen, 7782-44-7; water, 7732-18-5; Chlorides; ethylene dichloride, 107-06-2; Ethylene Dichlorides; Membranes, Artificial; Water Pollutants, Chemical
Subject
1,2 dichloroethane
iron oxide
oxygen
water
bioreactor
aeration
bacterial growth
bacterial strain
bacterium culture
biofilm reactor
controlled study
culture medium
diffusion
gas
hydrophilicity
inoculation
liquid
microbial degradation
nonhuman
Pseudomonas
Biodegradation, Environmental
Biofilms
Bioreactors
Chlorides
Computer Simulation
Ethylene Dichlorides
Kinetics
Membranes, Artificial
Pseudomonas
Water Pollutants, Chemical
Pseudomonas
Pseudomonas sp.
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DOI
https://doi.org/10.1007/s00253-004-1586-6
TNO identifier
237799
ISSN
0175-7598
Source
Applied Microbiology and Biotechnology, 64 (5), 718-725
Document type
article