title: Concentration multiplicity in a draft tube fluidized-bed bioreactor involving two limiting substrates.
abstract: Concentration multiplicity in a two-phase or three-phase draft tube fluidized-bed bioreactor containing biofloc particles is studied. The kinetics of biological reactions considered involve two limiting substrates. The necessary and sufficient conditions for concentration multiplicity in both the biofilm and bioreactor are examined in terms of effectiveness factor, inlet and bulk concentration of substrates, and liquid flow rate. Hysteresis behavior in both the biofilm and bioreactor and multiplicity of concentration profiles in the biofilm are also discussed.
authors.affiliation: Department of Chemical Engineering, The Ohio State University, Columbus, Ohio 43210, USA.
authors.forename: C C
authors.initials: CC
authors.lastname: Tong
authors.forename: L S
authors.initials: LS
authors.lastname: Fan