Liquid mixing in two- and three-phase airlift reactors

1994 ◽  
Vol 49 (9) ◽  
pp. 1465-1468 ◽  
Author(s):  
Wen-Jang Lu ◽  
Shyn-Jye Hwang ◽  
Chun-Min Chang
Keyword(s):  
Liquid Mixing ◽  
Three Phase ◽  
Airlift Reactors

Hydrodynamic Model for Three-Phase Annulus Airlift Reactors

2005 ◽  
Vol 44 (19) ◽  
pp. 7550-7558 ◽  
Author(s):  
Shulan Sun ◽  
Xiaojun Bao ◽  
Changjian Liu ◽  
Jian Xu ◽  
Weisheng Wei
Keyword(s):  
Hydrodynamic Model ◽  
Three Phase ◽  
Airlift Reactors

A fluid dynamic model for three-phase airlift reactors

1999 ◽  
Vol 54 (13-14) ◽  
pp. 2359-2370 ◽  
Author(s):  
E. Garcı́a-Calvo ◽  
A. Rodrı́guez ◽  
A. Prados ◽  
J. Klein
Keyword(s):  
Dynamic Model ◽  
Fluid Dynamic ◽  
Three Phase ◽  
Airlift Reactors

Biofilm abrasion by particle collisions in airlift reactors

1997 ◽  
Vol 36 (1) ◽  
pp. 221-228 ◽  
Author(s):  
A. Gjaltema ◽  
J. L. Vinke ◽  
M. C. M. van Loosdrecht ◽  
J. J. Heijnen
Keyword(s):  
Growth Conditions ◽  
Particle Collisions ◽  
Reactor Operation ◽  
Flow Fluctuations ◽  
Detachment Rate ◽  
Start Up ◽  
Three Phase ◽  
Abrasion Rate ◽  
Biofilm Development ◽  
Airlift Reactors

Biofilm development is determined by the balance between growth and detachment. The detachment of biomass from suspended biofilm pellets was investigated in three-phase internal loop airlift reactors under non-growth conditions, and in the presence of bare carrier particles. Particle collisions were found to dominate the detachment. These collisions caused an on-going abrasion of the biofilm pellets. The abrasion rate was linear with both the concentration of biofilm pellets and the bare carrier particles up to a solids hold-up of 30%. An increase in particle size drastically increased the abrasion rate. Carrier roughness also strongly influenced the detachment rate. Experimental results were interpreted in terms of collision frequency and collision impact, and could partly be described by conventional collision theory. Particle responses to flow fluctuations, the effect of carrier roughness and the effect of growth rate on biofilm strength and elasticity need to be included. Some consequences for reactor operation and start-up are discussed.

scholarly journals Hydrodynamic model for three-phase internal- and external-loop airlift reactors

1999 ◽  
Vol 54 (21) ◽  
pp. 5253-5258 ◽  
Author(s):  
Carla Freitas ◽  
Maria Fialová ◽  
Jindrich Zahradnik ◽  
José A. Teixeira
Keyword(s):  
Hydrodynamic Model ◽  
External Loop ◽  
Three Phase ◽  
Airlift Reactors

Liquid Mixing in Internal Loop Airlift Reactors

1994 ◽  
Vol 33 (9) ◽  
pp. 2180-2186 ◽  
Author(s):  
Wen-Jang Lu ◽  
Shyh-Jye Hwang ◽  
Chun-Min Chang
Keyword(s):  
Internal Loop ◽  
Liquid Mixing ◽  
Airlift Reactors
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