Summary
Three different materials, kaolin, pozzolana and biolite (a material used in a commercial anaerobic fluidized bed treatment process) when tested as supports for an anaerobic fluidized bed system had similar physical and fluidization properties but behaved differently towards the biomass hold-up. However, all three systems attained similar removal efficiency rates.
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Abbreviations
- U:
-
Fluidization velocity (m/s)
- U1 :
-
Terminal fluidization velocity (m/s)
- g:
-
Local acceleration due to gravity (m/s2)
- ϱ s :
-
Solid density (kg/m3)
- ϱ f :
-
Fluid density (kg/m3)
- ΔP:
-
Pressure drop (Pa)
- HRT:
-
Hydraulic retention time (days)
- Hmf :
-
Height of bed at minimum fluidization (m)
- H:
-
Height of bed (m)
- Cd :
-
Drag coefficient (dimensionless)
- W:
-
Mass of solids in bed (kg)
- dp:
-
Particle diameter (m)
- A:
-
Cross-sectional area of column (m2)
- h:
-
column height (m)
- Rct :
-
Terminal Reynolds no.
- ɛ:
-
Voidagc (fractional free volume, dimensionless)
- ɛmf :
-
Voidage (fractional free volume) at minimum of fluidization (dimensionless)
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García-Calderón, D., Buffière, P., Moletta, R. et al. Comparison of three granular support materials for anaerobic fluidized bed systems. Biotechnol Lett 18, 731–736 (1996). https://doi.org/10.1007/BF00130774
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DOI: https://doi.org/10.1007/BF00130774