Dynamics of bubble growth and detachment from rigid and flexible orifices [PDF]
, 2003 The objective of this paper is to understand how and why the orifice nature (rigid or flexible) governs the bubble generation. The differences in orifice nature and properties have strong consequences on the bubbles generated.
Hebrard, Gilles +2 more
core +1 more source
Measurement of Volumetric Mass Transfer Coefficient in Bubble Columns
ChemEngineering, 2018 The paper presents a brief overview of experiments on volumetric mass transfer coefficient in bubble columns. The available experimental data published are often incomparable due to the different type of gas distributor and different operating conditions
Mária Zedníková +3 more
doaj +1 more source
Bubble Column Reactors: the Variables Influencing the Mono-dispersed Homogeneous Flow Regime
Chemical Engineering Transactions, 2023 The fluid dynamics of large-diameter bubble columns explicates in six flow regimes emergin upon an increase in the gas flow rate and can be described and predicted via correct modelling of the flow regime transition coordinates. This study focuses on the
Nicolò Varallo +2 more
doaj +1 more source
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
Study of different membrane spargers used in waste water treatment : characterisation and performance [PDF]
, 2004 In urban waste water treatment, a novel gas sparger based on flexible rubber membrane has been used for the last ten years. The objective of this present work is to compare two flexible membranes (the new membrane and the old membrane provided by ONDEO-
Buffiere, P. +4 more
core +1 more source
Effect of Solid Phase and Geometry on Liquid Velocity of Three-Phase Bubble Columns
Chemical Engineering Transactions, 2015 Multiphase flows have a large applicability in the industry and its studies are very important. One example of three-phase system is bubble columns operating with solid phase as catalyst in the process.
K. Klock Da Costa +4 more
doaj +1 more source
A Hydrodynamic Study in a Sieve Plate Sectionalized Bubble Column [PDF]
Engineering and Technology Journal, 2011 The sectionalization of conventional bubble columns to tray bubble column by perforated trays has been used in chemical, biochemical, and petroleum processes as an effective way to improve the gas-liquid contacting efficiency, and reduce liquid ...
Burhan Sadeq Abdulrazzaq
doaj +1 more source
Non-invasive imaging of shallow bubble columns using electrical capacitance tomography
Journal of Saudi Chemical Society, 2010 This paper deals with application of non-invasive electrical capacitance tomography to study the hydrodynamics of shallow bed bubble columns. Two bubble columns with different height to diameter ratio were used.
Waheed A. Al-Masry +3 more
doaj +1 more source
Bubble dynamics in polymeric foams [PDF]
, 2004 The effects of fluid viscoelasticity on the expansion of gas bubbles in polymer foams for both non-reactive and reactive polymers are investigated. Polymer foams are used extensively in consumer products, from car parts to upholstery.
Everitt, Sally Louise
core +6 more sources
Two-Phase Bubble Columns: A Comprehensive Review
ChemEngineering, 2018 We present a comprehensive literature review on the two-phase bubble column; in this review we deeply analyze the flow regimes, the flow regime transitions, the local and global fluid dynamics parameters, and the mass transfer phenomena.
Giorgio Besagni +2 more
doaj +1 more source