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Effect of surfactants on liquid side mass transfer coefficients [PDF]
, 2005 In the present paper, the effect of liquid properties (surfactants) on bubble generation phenomenon, interfacial area and liquid side mass transfer coefficient was investigated.
Hebrard, Gilles +4 more
core +1 more source
Engineering Applications of Computational Fluid Mechanics, 2017 In this paper, the hydrodynamics of a bubble column is investigated numerically using the discrete bubble model, which tracks the dispersed bubbles individually in a liquid column.
Amjad Asad +2 more
doaj +1 more source
ChemEngineering, 2018 Vertical vibration is known to cause bubble breakup, clustering and retardation in gas-liquid systems. In a bubble column, vibration increases the mass transfer ratio by increasing the residence time and phase interfacial area through introducing kinetic
Shahrouz Mohagheghian +3 more
doaj +1 more source
Influence of liquid surface tension (surfactants) on bubble formation at rigid and flexible orifices [PDF]
, 2004 The influence of liquid surface tension on the bubble formation from both rigid and flexible orifice has been investigated. The liquid phases under test are aqueous solutions with butanol or surfactants (cationic, non-ionic and anionic); static and ...
Hebrard, Gilles, Loubière, Karine
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Application of electrical resistance tomography in evaluating the influence of nozzle design on the gas hold-up in boiling bubble column reactors [PDF]
, 2012 Includes abstract.Includes bibliographical references.Bubble column reactors are extensively used in the petro-chemicals industry due to the combined advantages of high rates of heat and mass transfer coupled with low operating and maintenance costs. The
Sudhakaran, Harikrishna
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Computation, 2019 A precise estimation of the bubble size distribution (BSD) is required to understand the fluid dynamics in gas-liquid bubble columns at the “bubble scale,” evaluate the heat and mass transfer rate, and support scale-up approaches.
Giorgio Besagni, Fabio Inzoli
doaj +1 more source
Characteristics of Bubbles and Gas Holdup In A Two-Phase Column For Different Liquid Phases [PDF]
Engineering and Technology Journal, 2007 Experimental study of gas holdup (Eg), bubble diameter (dvs) interfacial area(a) m-1, small bubble rise velocity (Ubs), and bubble rise velocity (Ubr) in (0.1mi.d) and (1.5m) high column operated at ambient temperature and pressureconditions.
Auroba. Abdullah
doaj +1 more source
Chemical Engineering Transactions, 2021 Bubble column reactors basically consist of a vertical cylinder filled by a liquid phase in which a gas phase is distributed in the liquid at the column bottom by an appropriate distributor system and moves along the column in the form of bubbles.
Carmen De Crescenzo +7 more
doaj +1 more source
Chemical Engineering Transactions, 2015 The bubble motion in non-Newtonian fluids is extensively used in many industrial processes. The influence of the liquid viscosity in the hydrodynamic behaviour of bubble columns is related to the bubble formation processes and the tendency to coalescence.
D.I. Sanchez-Forero +4 more
doaj +1 more source
Mass or heat transfer inside a spherical gas bubble at low to moderate Reynolds number [PDF]
, 2013 Mass (or heat) transfer inside a spherical gas bubble rising through a stationary liquid is investigated by direct numerical simulation. Simulations were carried out for bubble Reynolds number ranging from 0.1 to 100 and for Péclet numbers ranging from 1
Colombet, Damien +3 more
core +1 more source