Effect of surfactant nature upon absorption in a bubble column

García-Abuín, Alicia; Gómez‐Díaz, Diego; Navaza, José M.; Sanjurjo, Begoña

doi:10.1016/j.ces.2010.04.009

Cited by 35 publications

(29 citation statements)

References 29 publications

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“…In this work, this increase or enhancement is not observed and this behavior is assigned to the size of the surfactant molecule, compared to the experimental systems that indicate enhancement [23].…”

Section: Resultscontrasting

confidence: 58%

Effect of Tween 80 on Bubble Size and Mass Transfer in a Bubble Contactor

et al. 2011

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Gas absorption in aqueous solutions with Tween 80 and absorption processes based on hydrodynamics and mass transfer is determined. The impact of surfactant concentration on gas holdup and gas-liquid interfacial area is analyzed, observing an increase of these parameters with surfactant concentration. The influence of liquid-phase contamination on the absorption process is investigated on the basis of the liquid-film mass transfer coefficient, removing the effect caused by the presence of a surfactant and the gas flow rate on the interfacial area and, thereby, on the volumetric mass transfer coefficient. The opposite effect on the mass transfer coefficient can be observed which decreases in the presence of the surfactant.

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Section: Resultscontrasting

confidence: 58%

Effect of Tween 80 on Bubble Size and Mass Transfer in a Bubble Contactor

et al. 2011

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“…These mass transfer equipment include packed-bed absorber, packed-bed or tray distillation column, falling film absorber, concentric absorption system, and bubble absorber. Except for bubble absorber [9,10], a continuous liquid phase was presented as a solution film in the mass transfer equipment for all others. As mentioned by Wu [11], the Marangoni effect could be triggered in mass transfer systems with continuous liquid phases.…”

Section: γ = Fmentioning

confidence: 99%

Discussions of Effects of Surface Tension on Water Vapor Absorbed by Triethylene Glycol Solution Films

Wu¹,

Chung²

2018

Heat and Mass Transfer - Advances in Modelling and Experimental Study for Industrial Applications

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The surface tension gradient can result from releasing a surfactant from the liquid film or feeding a vapor into the liquid film, and the interfacial disturbance will be induced by them. The flowing phenomena were termed "Marangoni effect," and the mass transfer performance was enhanced by the effect. The objective of this study was to apply the Marangoni effect, such as water vapors absorbed by the liquid film of triethylene glycol (TEG) solution, and to analysze mass transfer behaviors with and without surfactants' addition in the liquid film. The interfacial disturbance resulted from the surface tension gradient was considered in this study, and the mass transfer behaviors for packed-bed absorbers were discussed to elucidate the influence of the Marangoni effect on the absorbers. It was observed that the trends of mass transfer rates could be increased significantly as the surfactant is added into the absorption system. Experimental results showed that feeding a vapor or adding a surfactant with lower surface tension and/or higher volatility in the liquid will result in the surface tension gradient on the gas-liquid interface. The induced flowing disturbance will lead to an increment of mass transfer rate for a gas-liquid contact system.

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“…Different studies have analysed the interfacial area produced in gas-liquid contactors in the presence of chemical reaction in the bulk of the liquid phase [11] using chemical methods, but this kind of procedures have shown different problems caused by the interfacial turbulence produced by surface tension gradients [12][13][14]. Besides, these studies were performed in continuous regime, and then, the influence of operation time (and carbon dioxide loading) upon the hydrodynamic parameters cannot be studied.…”

Section: Introductionmentioning

confidence: 97%

Chemical Reaction Effect upon Gas–Liquid Interfacial Area in a Bubble Column Reactor

Blanco

García-Abuín

Gómez‐Díaz

et al. 2013

International Journal of Chemical Reactor Engineering

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This work analyses the influence of different experimental conditions over important hydrodynamic parameters of a bubble column reactor, such as bubble size distribution, gas hold-up and the gas-liquid interfacial area. The influence of gas flow-rate (18-40 L h -1 ) and reagent concentration (0-0.5 mol L -1 ) in the liquid phase upon these hydrodynamic parameters have been studied. The influence of experiment time must also be taken into account due to non-steady-state regime. Under these considerations, the chemical absorption rate changes throughout time, and it produces important changes upon the global absorption process, due to modifications in the gas-liquid interfacial area. The presence of a fast reaction in the liquid bulk has the highest influence upon interfacial area.

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Effect of surfactant nature upon absorption in a bubble column

Cited by 35 publications

References 29 publications

Effect of Tween 80 on Bubble Size and Mass Transfer in a Bubble Contactor

Effect of Tween 80 on Bubble Size and Mass Transfer in a Bubble Contactor

Discussions of Effects of Surface Tension on Water Vapor Absorbed by Triethylene Glycol Solution Films

Chemical Reaction Effect upon Gas–Liquid Interfacial Area in a Bubble Column Reactor

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