Aerobic phenanthrene biodegradation in a two-phase partitioning bioreactor
Muñoz, R.; Rolvering, C.; Guieysse, B.; Mattiasson, B.
Water Science and Technology a Journal of the International Association on Water Pollution Research 52(8): 265-271
2005
ISSN/ISBN: 0273-1223 PMID: 16312976 Document Number: 592611
The aerobic degradation of phenanthrene by a Pseudomonas migulae strain under classical mechanical aeration and under photosynthetic oxygenation (using a Chlorella sorokiniana strain) in a two-phase partitioning bioreactor (TPPB) constructed with silicone oil as organic phase was investigated. When traditional mechanical aeration was used, an increase in the aeration and/or in the agitation rate enhanced phenanthrene biodegradation. Thus, phenanthrene removal rates (based on the total liquid volume of cultivation) ranged from 22+or-1 to 36+or-2 mg/l h at 100 rpm and 1 vvm and 400 rpm and 3 vvm, respectively. On the other hand, during phenanthrene biodegradation using the algal-bacterial microcosm a maximum rate of 8.1+or-1.2 mg/l h at 200 rpm and 8000 lux of illuminance was achieved.