In this study, the bacterial population of two biotrickling filters (BFTs)
treating isopropanol by using fluorescence in situ hybridization (FISH) is
analyzed. The experimental system consists in two identical laboratoryscale
BFTs named as BFT1 and BFT2. The two bioreactors were
operated in parallel during an experimental period of one year working
under intermittent feeding conditions Operating conditions and
maintenance were identical in both BFT
