Oxygen mass transfer to emulsions in a bubble column contactor

Gómez‐Díaz, Diego; Gomes, Nelma; Teixeira, J. A.; Belo, Isabel

doi:10.1016/j.cej.2009.04.059

Cited by 36 publications

(13 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…nificant changes with regard to the values obtained for the carbon dioxide/water system, in agreement with other researches using different surfactants [15,16]. The hydrodynamic characterization of the gas-liquid systems in the present work includes the analysis of the bubble size distribution produced in the bubble column.…”

Section: Resultssupporting

confidence: 87%

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

et al. 2011

View full text Add to dashboard Cite

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.

show abstract

Section: Resultssupporting

confidence: 87%

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

et al. 2011

View full text Add to dashboard Cite

show abstract

“…At low operation time, the interfacial area increases slowly, and as time increases, interfacial area increases to a higher level, until the final value is achieved. This behaviour is in agreement with previous studies that have observed a higher importance of gas hold-up upon interfacial area than the effect caused by the Sauter mean diameter [24,25]. The gas hold-up increases slighter than the Sauter mean diameter behaviour, previously commented, and this fact explains the behaviour shown in Figure 6 for interfacial area.…”

Section: Methodssupporting

confidence: 93%

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

Self Cite

View full text Add to dashboard Cite

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.

show abstract

“…In contrast, the presence of a higher number of bubbles increases the gas hold-up in the liquid phase with a positive influence upon the gas-liquid interfacial area. Previous works [23,24] have concluded that the gas holdup is the most important parameter affecting the gas-liquid interfacial area, in agreement with Fig. 6.…”

Section: Absorption Ratesupporting

confidence: 90%

CO₂ Absorption and Regeneration Using Amines with Different Degrees of Steric Hindrance

et al. 2017

Self Cite

View full text Add to dashboard Cite

The influence of steric hindrance in amines upon different characteristics in carbon dioxide chemical absorption, namely, absorption rate, carbon dioxide loading, and regeneration degree, has been analyzed. Aqueous solutions of monoethanolamine, 1‐amino‐2‐propanol, and 2‐amino‐2‐methyl‐1‐propanol were used to compare their behavior during carbon dioxide absorption. The presence of one or two methyl groups on the carbon next to the amino group produced changes in the analyzed parameters. In addition, the influences of the gas‐flow rate and amine concentration on the chemical solvent behavior were studied to improve the mass transfer under different experimental conditions.

show abstract

Oxygen mass transfer to emulsions in a bubble column contactor

Cited by 36 publications

References 22 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

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

CO₂ Absorption and Regeneration Using Amines with Different Degrees of Steric Hindrance

Contact Info

Product

Resources

About

Oxygen mass transfer to emulsions in a bubble column contactor

Cited by 36 publications

References 22 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

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

CO2 Absorption and Regeneration Using Amines with Different Degrees of Steric Hindrance

Contact Info

Product

Resources

About

CO₂ Absorption and Regeneration Using Amines with Different Degrees of Steric Hindrance