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Investigation of the effect of viscosity on slug flow in airlift tubular membranes in search of a sludge surrogate

(2010) WATER SCIENCE AND TECHNOLOGY. 61(7). p.1801-1809
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Abstract
The behaviour of three different liquid-gas slug flows (water, carboxymethyl cellulose and activated sludge) in a vertical tube was studied using a high speed camera (HSC). Experiments were performed using different flow rates and two tube diameters (6.3 and 9.9 mm). The observed difference in behaviour of the ascending gas slugs can be explained by the difference in viscosity of the fluids (Newtonian and non-Newtonian). Moreover, it was observed that the degree of coalescence of gas slugs is lower for non-Newtonian liquids and they behave like a succession of slugs without actually coalescing into a single larger gas slug. Finally, gas slug rising velocities were also extracted, but no subsequent difference in the rising velocities of the different fluids was found.
Keywords
gas slug rising velocity, coalescence, gas-liquid slug flow, side-stream membrane bioreactor, viscosity, GAS-SPARGED ULTRAFILTRATION, TAYLOR BUBBLE, VERTICAL PIPE, LIQUID, BIOREACTOR, TUBES, HYDRODYNAMICS, FILTRATION, TURBULENT, VELOCITY

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Citation

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Chicago
Rios Ratkovich, Nicolas, CCV Chan, PR Berube, and Ingmar Nopens. 2010. “Investigation of the Effect of Viscosity on Slug Flow in Airlift Tubular Membranes in Search of a Sludge Surrogate.” Water Science and Technology 61 (7): 1801–1809.
APA
Rios Ratkovich, N., Chan, C., Berube, P., & Nopens, I. (2010). Investigation of the effect of viscosity on slug flow in airlift tubular membranes in search of a sludge surrogate. WATER SCIENCE AND TECHNOLOGY, 61(7), 1801–1809.
Vancouver
1.
Rios Ratkovich N, Chan C, Berube P, Nopens I. Investigation of the effect of viscosity on slug flow in airlift tubular membranes in search of a sludge surrogate. WATER SCIENCE AND TECHNOLOGY. 2010;61(7):1801–9.
MLA
Rios Ratkovich, Nicolas, CCV Chan, PR Berube, et al. “Investigation of the Effect of Viscosity on Slug Flow in Airlift Tubular Membranes in Search of a Sludge Surrogate.” WATER SCIENCE AND TECHNOLOGY 61.7 (2010): 1801–1809. Print.
@article{1086731,
  abstract     = {The behaviour of three different liquid-gas slug flows (water, carboxymethyl cellulose and activated sludge) in a vertical tube was studied using a high speed camera (HSC). Experiments were performed using different flow rates and two tube diameters (6.3 and 9.9 mm). The observed difference in behaviour of the ascending gas slugs can be explained by the difference in viscosity of the fluids (Newtonian and non-Newtonian). Moreover, it was observed that the degree of coalescence of gas slugs is lower for non-Newtonian liquids and they behave like a succession of slugs without actually coalescing into a single larger gas slug. Finally, gas slug rising velocities were also extracted, but no subsequent difference in the rising velocities of the different fluids was found.},
  author       = {Rios Ratkovich, Nicolas and Chan, CCV and Berube, PR and Nopens, Ingmar},
  issn         = {0273-1223},
  journal      = {WATER SCIENCE AND TECHNOLOGY},
  keyword      = {gas slug rising velocity,coalescence,gas-liquid slug flow,side-stream membrane bioreactor,viscosity,GAS-SPARGED ULTRAFILTRATION,TAYLOR BUBBLE,VERTICAL PIPE,LIQUID,BIOREACTOR,TUBES,HYDRODYNAMICS,FILTRATION,TURBULENT,VELOCITY},
  language     = {eng},
  number       = {7},
  pages        = {1801--1809},
  title        = {Investigation of the effect of viscosity on slug flow in airlift tubular membranes in search of a sludge surrogate},
  url          = {http://dx.doi.org/10.2166/wst.2010.118},
  volume       = {61},
  year         = {2010},
}

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