It is, moreover, clear that 10–90% of toluene has been
removed under different conditions. But in the steady state
conditions, the RE reached 45%, 87% and 60%, respectively.
According to Fig. 2, at the points in which there is an increase
in the outlet concentration, RE has decreased. The highest RE
was achievedwhen the residence time increased up to 4.4 min.
In this case, the microorganisms clearly had sufficient time to
absorb and oxidize the pollutant.
At the first day of the experiments in phase IV, the toluene
concentration was set at 52.6mgm−3. A comparison between
phase III and IV demonstrated that in the lower concentration
of pollutant, steady-state was achieved in 4 days and RE
increased continuously. In fact, when the pollutant loading
decreased, the microbial population consumed toluene more
rapidly in comparison with the time they had been adapted to
a 173.1mgm−3 of inlet concentration.
Fig. 3 indicates the effect of hexane inlet load on the elimination
capacity of the bioreactor. In general, the maximum EC
obtained at various phases of the experiments was reduced
by increasing the inlet load. The variations of EC of the biofil-
It is, moreover, clear that 10–90% of toluene has been
removed under different conditions. But in the steady state
conditions, the RE reached 45%, 87% and 60%, respectively.
According to Fig. 2, at the points in which there is an increase
in the outlet concentration, RE has decreased. The highest RE
was achievedwhen the residence time increased up to 4.4 min.
In this case, the microorganisms clearly had sufficient time to
absorb and oxidize the pollutant.
At the first day of the experiments in phase IV, the toluene
concentration was set at 52.6mgm−3. A comparison between
phase III and IV demonstrated that in the lower concentration
of pollutant, steady-state was achieved in 4 days and RE
increased continuously. In fact, when the pollutant loading
decreased, the microbial population consumed toluene more
rapidly in comparison with the time they had been adapted to
a 173.1mgm−3 of inlet concentration.
Fig. 3 indicates the effect of hexane inlet load on the elimination
capacity of the bioreactor. In general, the maximum EC
obtained at various phases of the experiments was reduced
by increasing the inlet load. The variations of EC of the biofil-
การแปล กรุณารอสักครู่..
