Results 21 to 30 of about 933 (258)
The Effect of Surfactants on Characteristics of Hydrodynamic and Mass Transfer Coefficient in Gas-Liquid Dispersion Column [PDF]
Engineering and Technology Journal, 2007 This work studis the effect of liquid properties (water, solution 0.2-1.5 wt% for each of i-propanol, and n-butanol), temperature (26-55 oC) andsuperficial air velocity (1-15cm/s) on the gas holdup and mass transfercoefficient in air-liquid dispersion ...
Thamer Mohammed, Fadi Hanna
doaj +1 more source
ChemEngineeringThis study explores the dynamics of liquid holdup in a lab-scale co-current two-phase upflow moving packed bed reactor, specifically examining how superficial gas velocity influences the line average external liquid holdup at a fixed superficial liquid ...
Ali Toukan +4 more
doaj +1 more source
Local Static Hold-up in a Rotary Sieved Disc Contactor for a Butyl Acetate-water System
International Journal of Technology, 2016 Considering the importance of liquid static holdup in liquid-liquid extraction columns, a novel experimental approach for predicting the mentioned parameter in a rotary sieved disc contactor has is presented in this research.
Fatemeh Behzad +4 more
doaj +1 more source
ChemEngineering, 2022 The present study provides and examines an experimental and CFD simulation to predict and accurately quantify the individual phase holdup. The experimental findings demonstrated that the increase of solid beads has a significant influence on the (Umf ...
Amer A. Abdulrahman +7 more
doaj +1 more source
Particle Holdup in a Liquid-Solid Circulating Fluidized Bed
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B, 2007 AbstractAn experiment was conducted to acquire a set of systematic data of particle holdup in risers of a liquid–solid circulating fluidized bed. In the experiment, two kinds of riser were provided, their inner diameter being 24 mm and 36 mm, respectively. Tested particles were of glass and ceramics, having a diameter range from 2.10 to 4.95 mm.
HASHIZUME, Kenichi, MORITA, Shinichi
openaire +2 more sources
Effect of Electrolyte Concentration on Bubble Size and Gas-Liquid Interfacial Area in Bubble Column
Tikrit Journal of Engineering Sciences, 2005 The optimum conditions of bubble column would be the ones that enhance mass transfer and this is accomplished by maximizing gas-liquid interfacial area. In the present work the effect of electrolyte concentration (aqueous solution of sodium chloride NaCl
Farah T. Jassem
doaj +1 more source
Shock and Vibration, 2023 The online detection of liquid flow rate in gas-liquid two-phase flow has become an important factor in ensuring the safe operation of gas wells. In this paper, the real-time measurement of liquid holdup in gas-liquid two-phase flow is carried out by ...
Zhang Jian +3 more
doaj +1 more source
ChemEngineering, 2021 Newly novel developed correlations were derived to predict the dispersed phase (DP) holdup in a rotating disc contactor (RDC) extraction column. DP holdup is one of the significant parameters in the design of liquid–liquid contactors and for calculating ...
Ayham M. I. Al-Rahawi +6 more
doaj +1 more source
Hydrodynamics of pulsed sieve-plate extraction columns [PDF]
Hemijska Industrija, 2020 This paper presents a review of some hydrodynamic parameters in pulsed sieve-plate extraction columns. The hydrodynamic parameters in liquid-liquid systems in these columns were analyzed regarding the effects of operating and geometrical parameters.
Sovilj Milan N. +1 more
doaj +1 more source
FEBS Letters, EarlyView.Ascidian Ciona larvae initially show strong clockwise tail twisting, which is largely corrected during development. However, a small residual twist remains. This study shows that organized helical myofibrils in tail muscles mechanically stabilize this residual asymmetry, preventing complete restoration of bilateral symmetry and revealing how embryos ...
Yuki S. Kogure +3 more
wiley +1 more source