Intensification of mass transfer in a pulsed bubble column

Budzyński, P.; Gwiazda, A.; Dziubiński, M.

doi:10.1016/j.cep.2016.12.004

Cited by 21 publications

(13 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Under vibration, Budzyński et al [22] recommend H > 8D to minimize the impact of the liquid surface deformation on void fraction measurements. Air was injected into the column at superficial gas velocities (U SG ) of 1.0, 2.5, 5.0, 7.5 and 10.0 mm/s.…”

Section: Resultsmentioning

confidence: 99%

“…Particular frequencies and vibration modes correspond to significant intensification of mass transfer and void fraction [12][13][14][15][16][17][18][19][20][21][22]. The current mass transfer measurements were validated with comparison to a subset of conditions tested in Waghmare et al [19].…”

Section: Volumetric Mass Transfer Coefficientmentioning

confidence: 99%

“…A dissolved oxygen (DO) probe (DO-BTA, Vernier Software and Technology, Beaverton, OR, USA) with a resolution of 0.007 mg/L and uncertainty of ±0.2 mg/L measured the DO concentration for mass transfer measurements. The DO probe was positioned three column diameters above the injector tip [22] and 0.1 diameters from the column wall [37] to account for mixing length and wall effects, respectively. Bubbles were recorded with still images (D3100, Nikon, Melville, NY, USA), high-speed (400 Hz) imaging (Phantom Miro 110, Vision Research, Wayne, NJ, USA) and video recordings (EX-F1, Casio-300 Hz; DCR-VX2000, Sony, New York, NY, USA).…”

Section: Experimental Methodsmentioning

confidence: 99%

“…More recently, there has been a renewed interest in the study of vibrating bubble columns [12][13][14][15][16][17][18][19][20][21][22]. These recent efforts have developed theoretical physics-based models to predict mass transfer and void fraction in bubble column reactor (BCR) systems undergoing vibration [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

“…is a common way to determine the volumetric mass transfer coefficient (k L a) within a BCR [13,17,18,[21][22][23]. Here, C is the instantaneous concentration of dissolved gas in the liquid, C* is the saturation concentration, t is time, k L is the liquid mass transfer coefficient, and a is the phase interfacial area.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Study of Bubble Size, Void Fraction, and Mass Transport in a Bubble Column under High Amplitude Vibration

et al. 2018

View full text Add to dashboard Cite

Abstract:Vertical vibration is known to cause bubble breakup, clustering and retardation in gas-liquid systems. In a bubble column, vibration increases the mass transfer ratio by increasing the residence time and phase interfacial area through introducing kinetic buoyancy force (Bjerknes effect) and bubble breakup. Previous studies have explored the effect of vibration frequency (f ), but minimal effort has focused on the effect of amplitude (A) on mass transfer intensification. Thus, the current work experimentally examines bubble size, void fraction, and mass transfer in a bubble column under relatively high amplitude vibration (1.5 mm < A <9.5 mm) over a frequency range of 7.5-22.5 Hz.Results of the present work were compared with past studies. The maximum stable bubble size under vibration was scaled using Hinze theory for breakage. Results of this work indicate that vibration frequency exhibits local maxima in both mass transfer and void fraction. Moreover, an optimum amplitude that is independent of vibration frequency was found for mass transfer enhancements. Finally, this work suggests physics-based models to predict void fraction and mass transfer in a vibrating bubble column.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Volumetric Mass Transfer Coefficientmentioning

confidence: 99%

Section: Experimental Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Study of Bubble Size, Void Fraction, and Mass Transport in a Bubble Column under High Amplitude Vibration

et al. 2018

View full text Add to dashboard Cite

show abstract

Applications of Membrane Contactors for Water Treatment

Kapoor

Poonguzhali

Dayanandan

et al. 2021

Applied Water Science Volume 1

View full text Add to dashboard Cite

Gas–liquid mass transfer and bubble size distribution in a multi‐Cyclone separator

Qian

et al. 2018

AIChE Journal

View full text Add to dashboard Cite

This article discusses the use of a multi-cyclone separator, which is a simplified form of a degassing hydrocyclone, in the separation of sweeping nitrogen bubbles and dissolved oxygen from water. The motion of the nitrogen bubbles and mass transfer of dissolved oxygen is discussed. It was observed that the Sauter mean diameter and gas volume in the swirling flow region as well as the total gas holdup increased as the volumetric ratio of gas to liquid flow increased. Almost all bubbles were found to exit through the gas outlet, indicating optimum performance of the bubble-separation process. The multi-cyclone separator was found to achieve good performance for the mass transfer of oxygen from water to nitrogen. This work is important in predicting the destination of bubbles and dissolved gas in swirling flow.

show abstract

Intensification of mass transfer in a pulsed bubble column

Cited by 21 publications

References 23 publications

Study of Bubble Size, Void Fraction, and Mass Transport in a Bubble Column under High Amplitude Vibration

Study of Bubble Size, Void Fraction, and Mass Transport in a Bubble Column under High Amplitude Vibration

Applications of Membrane Contactors for Water Treatment

Gas–liquid mass transfer and bubble size distribution in a multi‐Cyclone separator

Contact Info

Product

Resources

About