Dynamics of fines/bacterial cells accumulation in trickle-bed reactors/bioreactors—Multiscale modeling framework

摘要: Abstract Modeling the dynamics of fines/bacterial cells accumulation in gas–liquid–solid reactors/bioreactors is a difficult task which demands an improved understanding and quantification complex fluid dynamics, surface physical microbiological phenomena coupled with (bio)chemistry thermodynamic backgrounds. This contribution offered as step that direction presents two case studies reference to modeling biological plugging/clogging trickle-bed reactors/bioreactors, induced, respectively, by retention fine particles formation excessive amount biomass. The gas–liquid flow space–time evolution capture, aggregation, detachment migration were analyzed after mathematical description was cast terms Euler–Euler two-fluid dynamic models based on volume-average mass momentum equations developed for multiphase systems species balance equations, solid deposit/biomass filtration aggregates, population agglomeration.