Removal of hydrogen sulphide
The biofilter operated in continuous mode during 118 days. Three EBRT (empty bed
residence time) was studied (100,70 and 30 second) with H2S concentrations, ranging
from 25 to 750 ppmv, in order to determine removal capacity of the biofilter.
Several authors have studied biofilters to predict a mathematical model. A simple model based on the Michaelis-Menten equation was using for
Hirai et al. (1990), Cho et al. (1991), and Wani et al. (1999) assuming an ideal plug
flow of gas without dispersion at steady state in the biofilter column. In steady state the
biofilter can be modelled by the following equation