scholarly journals Bubble Coalescence on Photobioreactor Bubble Columns by Using Horizontal Baffle for Microalgae

Evergreen ◽  
2021 ◽  
Vol 8 (4) ◽  
pp. 861-865
Author(s):  
Juno Dwi Putra ◽  
Arif Rahman ◽  
Nining Betawati Prihantini ◽  
Deendarlianto ◽  
Nasruddin
Keyword(s):  
Bubble Columns ◽  
Bubble Coalescence

Flow Simulation in Bubble Columns in Regard to Bubble Coalescence and Break-up Utilizing LES and DEM

2004 ◽  
Vol 37 (8) ◽  
pp. 976-989 ◽  
Author(s):  
Hiroshi Takeda ◽  
Norio Esaki ◽  
Kenji Doi ◽  
Hirofumi Murakami ◽  
Koichi Yamasaki ◽  
...  
Keyword(s):  
Flow Simulation ◽  
Bubble Columns ◽  
Bubble Coalescence ◽  
Break Up

Bubble coalescence and break-up in air-sparged bubble columns

AIChE Journal ◽  
1990 ◽  
Vol 36 (10) ◽  
pp. 1485-1499 ◽  
Author(s):  
Michael J. Prince ◽  
Harvey W. Blanch
Keyword(s):  
Bubble Columns ◽  
Bubble Coalescence ◽  
Break Up

Behaviour of air injection nozzles in dissolved air flotation

1995 ◽  
Vol 31 (3-4) ◽  
pp. 25-35 ◽  
Author(s):  
E. M. Rykaart ◽  
J. Haarhoff
Keyword(s):  
Bubble Coalescence ◽  
Second Phase ◽  
Initial Growth ◽  
Two Phase ◽  
Dissolved Air Flotation ◽  
Nozzle Orifice ◽  
Pressure Release ◽  
Air Volume ◽  
Air Flotation ◽  
Dissolved Air

A simple two-phase conceptual model is postulated to explain the initial growth of microbubbles after pressure release in dissolved air flotation. During the first phase bubbles merely expand from existing nucleation centres as air precipitates from solution, without bubble coalescence. This phase ends when all excess air is transferred to the gas phase. During the second phase, the total air volume remains the same, but bubbles continue to grow due to bubble coalescence. This model is used to explain the results from experiments where three different nozzle variations were tested, namely a nozzle with an impinging surface immediately outside the nozzle orifice, a nozzle with a bend in the nozzle channel, and a nozzle with a tapering outlet immediately outside the nozzle orifice. From these experiments, it is inferred that the first phase of bubble growth is completed at approximately 1.7 ms after the start of pressure release.

A new methodology for hydrodynamic similarity in bubble columns

2010 ◽  
Vol 88 (4) ◽  
pp. 503-517 ◽  
Author(s):  
Ashfaq Shaikh ◽  
Muthanna Al-Dahhan
Keyword(s):  
Bubble Columns ◽  
Hydrodynamic Similarity
Sign in / Sign up

Export Citation Format

Share Document