Results 11 to 20 of about 10,246,522 (289)

Modelling of transient gas-liquid flow and pigging in pipes [PDF]

open access: yes, 1999
More and more transient gas-liquid operations in pipes are being successfully applied in the oil and gas industry. Pigging in two-phase pipelines, to remove liquid accumulation or for cleaning purposes, is an important transient operation.
Lima, P. C. R.
core   +7 more sources

Gas hold-up and bubble diameters in a gassed oscillatory baffled column [PDF]

open access: yes, 2001
In this paper attempts are made to address how bubble behaviour in a batch oscillatory ba'ed column (OBC) contributes to the overall measured enhancement in mass transfer.
Ni, X., Oliveira, Monica
core   +4 more sources

Hydrodynamics and mass transfer inthree-phase airlift reactors for activated Carbon and sludge filtration [PDF]

open access: yesAdvances in Environmental Technology, 2017
A bioreactor refers to any manufactured or engineered device that supports a biologically active environment. These kinds of reactors are designed to treat wastewater treatment.
Mohammad Ali Salehi, Nasrin Hakimghiasi
doaj   +1 more source

Hydrodynamics and Gas Hold-Up of a Gas–Liquid Coaxial Mixing System at Different Scales Containing a Non-Newtonian Fluid

open access: yesEngineering Proceedings, 2023
The gas–liquid mixing phenomenon that occurs in a mixing tank containing a non-Newtonian fluid is an important process in many industrial applications, such as chemical and biochemical processing.
Ali Rahimzadeh   +2 more
doaj   +1 more source

Production and Solubility of Ectoine: Biochemical and Molecular Dynamics Simulation Studies [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2020
In this study, ectoine is produced by Streptomyces. sp IBRC-M PTCC 10615. Fermentation parameters such as flow regime, gas hold up, mass transfer coefficient, and mixing time were optimized by statistical analysis. Streptomyces.
Soheil Rezazadeh Mofradnia   +6 more
doaj   +1 more source

Analysis of the hydrodynamic parameters of external loop air lift bioreactors [PDF]

open access: yesHemijska Industrija, 2004
In this study we analyzed the effects of the hydrodynamic conditions and properties of the working fluid on the operation of external loop air lift bioreactors. In particular, the effects of design and operating parameters (e.g.
Milivojević Milan M.   +4 more
doaj   +1 more source

Experimental Study and Theoretical Model Described Transition Regime Parameters and Hydrodynamic Parameters in a Gas-Liquid Dispersion Column [PDF]

open access: yesEngineering and Technology Journal, 2010
Experimental study of total gas hold-up, bubble diameters and rise velocity ofthe swarm of bubbles, and regime transition point in dispersion column. Theexperimental runs were carried out in two perspex columns of 7.5 cm and 15 cm insidediameter.
Fadi Z. Hanna
doaj   +1 more source

Experimental study of liquid spreading in structured packings [PDF]

open access: yes, 2012
Optimization of industrial gas-liquid columns dedicated to CO2 capture requires prediction of liquid distribution within packed beds. In this context, liquid hold-up as well as liquid spreading from a source point have been investigated for Mellapak 250 ...
Roig, Véronique   +2 more
core   +1 more source

Influence of Hydrodynamic Flow Regimes on the Prediction of Gas Hold-up and Liquid Circulation in Airlift Reactors

open access: yesJournal of King Saud University: Engineering Sciences, 2003
The influence of the recently identified hydrodynamic flow regimes on the prediction of gas hold-up and liquid circulation velocity in airlift reactors has been investigated. Some hydrodynamic models based on momentum balance are considered.
M.E.E. Abashar
doaj   +1 more source

A Comparative Study of Methods for Determining Gas Hold-Up Time [PDF]

open access: yesJournal of Chromatographic Science, 2006
It has been proved mathematically that there exists an identity between the various published methods for determining the hold-up times in gas chromatography. All of these methods are based on the equation: ln t'(R) = ln (t(R) - t(M)) = a + bZ, where t(R), t'(R), and t(M) are retention times, adjusted retention times, and hold-up times, respectively; a
N S, Wu, G S, Wu, M Y, Wu
openaire   +2 more sources

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