scholarly journals Effects of Column Diameter on the Holdups of Bubble, Wake and Continuous Liquid Phase in Bubble Columns with Viscous Liquid Medium

2011 ◽  
Vol 49 (5) ◽  
pp. 582-587
Author(s):  
Dae Ho Lim ◽  
Ji Hwa Jang ◽  
Yong Kang ◽  
Ki Won Jun
Keyword(s):  
Liquid Phase ◽  
Liquid Medium ◽  
Viscous Liquid ◽  
Bubble Columns ◽  
Column Diameter

scholarly journals Effect of Surfactants on Gas Holdup in Shear-Thinning Fluids

2017 ◽  
Vol 2017 ◽  
pp. 1-7 ◽  
Author(s):  
Shaobai Li ◽  
Siyuan Huang ◽  
Jungeng Fan
Keyword(s):  
Experimental Data ◽  
Liquid Phase ◽  
Sodium Dodecyl ◽  
Shear Thinning ◽  
Gas Holdup ◽  
Bubble Columns ◽  
Gas Velocity ◽  
Shear Thinning Fluids ◽  
Liquid Surface Tension ◽  
Superficial Gas Velocity

In this study, the gas holdup of bubble swarms in shear-thinning fluids was experimentally studied at superficial gas velocities ranging from 0.001 to 0.02 m·s−1. Carboxylmethyl cellulose (CMC) solutions of 0.2 wt%, 0.6 wt%, and 1.0 wt% with sodium dodecyl sulfate (SDS) as the surfactant were used as the power-law (liquid phase), and nitrogen was used as the gas phase. Effects of SDS concentration, rheological behavior, and physical properties of the liquid phase and superficial gas velocity on gas holdup were investigated. Results indicated that gas holdup increases with increasing superficial gas velocity and decreasing CMC concentration. Moreover, the addition of SDS in CMC solutions increased gas holdup, and the degree increased with the surfactant concentration. An empirical correlation was proposed for evaluating gas holdup as a function of liquid surface tension, density, effective viscosity, rheological property, superficial gas velocity, and geometric characteristics of bubble columns using the experimental data obtained for the different superficial gas velocities and CMC solution concentrations with different surfactant solutions. These proposed correlations reasonably fitted the experimental data obtained for gas holdup in this system.

Laser-activated gold catalysts for liquid-phase growth of cadmium selenide nanowires

2015 ◽  
Vol 51 (11) ◽  
pp. 2145-2148 ◽  
Author(s):  
C. Huang ◽  
J. Mao ◽  
X. M. Chen ◽  
J. Yang ◽  
X. W. Du
Keyword(s):  
Liquid Phase ◽  
Liquid Medium ◽  
Cadmium Selenide ◽  
Room Temperature ◽  
Gold Catalysts ◽  
Device Fabrication ◽  
Phase Growth ◽  
Liquid Phase Growth ◽  
Cdse Nanowires ◽  
Cadmium Selenide Nanowires

A laser-activated-catalyst (LAC) technique was developed to grow CdSe nanowires in liquid medium at room temperature. The LAC technique can achieve accurate positioning of nanowires, which is beneficial for device fabrication.

Liquid-phase mixing model for hydrodynamics of bubble columns

1989 ◽  
Vol 26 (2) ◽  
pp. 165-172 ◽  
Author(s):  
U Rustemeyer ◽  
J Pauli ◽  
Th Menzel ◽  
R Buchholz ◽  
U Onken
Keyword(s):  
Liquid Phase ◽  
Mixing Model ◽  
Bubble Columns ◽  
Phase Mixing

Modelling churn-turbulent bubble columns—I. Liquid-phase mixing

1987 ◽  
Vol 42 (10) ◽  
pp. 2301-2311 ◽  
Author(s):  
K.J. Myers ◽  
M.P. Duduković ◽  
P.A. Ramachandran
Keyword(s):  
Liquid Phase ◽  
Bubble Columns ◽  
Phase Mixing
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