Average mass transfer coefficients within denitrifying biofilms were determined during biofilm growth with an inert
compound (LiCl) in a membrane flow cell at different flow conditions, until the biofilm reached (pseudo-) steady state. Similar
values were obtained for the steady-state mass transfer coefficients of LiCl within the different biofilms. However, those
coefficients were higher during the transient period of biofilm growth for the biofilm developed under the highest upflow
velocity.Xunta de Galicia, project BioToBi