Features of the motion of gel particles in a three-phase bubble column under foaming and non-foaming conditions
Features of the motion of gel particles in a three-phase bubble column with non-foaming and foaming gas–liquid systems, determined by using experiments of radioactive particle tracking (RPT), have been compared. The tracer used is a gel particle which resembles typical immobilized biocatalyst. The t...
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2018
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10049541_v26_n6_p1370_Salierno http://hdl.handle.net/20.500.12110/paper_10049541_v26_n6_p1370_Salierno |
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paper:paper_10049541_v26_n6_p1370_Salierno2023-06-08T15:59:21Z Features of the motion of gel particles in a three-phase bubble column under foaming and non-foaming conditions Bubble columns Foaming Gel beads Mixing Particle tracking Solid motion Atmospheric movements Bubble columns Dispersions Fluidized beds Gamma rays Mixing Runway foaming Velocity Dispersion coefficient Gel beads Hydrodynamic stress Immobilized biocatalysts Particle tracking Radioactive particle tracking Solid motions Turbulence parameters Gas foaming Features of the motion of gel particles in a three-phase bubble column with non-foaming and foaming gas–liquid systems, determined by using experiments of radioactive particle tracking (RPT), have been compared. The tracer used is a gel particle which resembles typical immobilized biocatalyst. The tracer trajectory is analyzed to extract relevant information for design purposes. The solid velocity field, turbulence parameters, dispersion coefficients, mixing times and flow transitions are determined and compared. The presence of foam significantly affects many quantified parameters, especially within the heterogeneous flow regime. The hydrodynamic stresses are reduced in the presence of foam, especially close to the disengagement. The dispersion coefficients also decrease, and the solid mixing time is only slightly affected by the presence of foam. Gas holdup, inferred both from RPT experiments and from gamma ray scanning, is higher for foaming systems and leads to a shift in the transition gas velocity towards higher values. © 2017 Elsevier B.V. 2018 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10049541_v26_n6_p1370_Salierno http://hdl.handle.net/20.500.12110/paper_10049541_v26_n6_p1370_Salierno |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Bubble columns Foaming Gel beads Mixing Particle tracking Solid motion Atmospheric movements Bubble columns Dispersions Fluidized beds Gamma rays Mixing Runway foaming Velocity Dispersion coefficient Gel beads Hydrodynamic stress Immobilized biocatalysts Particle tracking Radioactive particle tracking Solid motions Turbulence parameters Gas foaming |
| spellingShingle |
Bubble columns Foaming Gel beads Mixing Particle tracking Solid motion Atmospheric movements Bubble columns Dispersions Fluidized beds Gamma rays Mixing Runway foaming Velocity Dispersion coefficient Gel beads Hydrodynamic stress Immobilized biocatalysts Particle tracking Radioactive particle tracking Solid motions Turbulence parameters Gas foaming Features of the motion of gel particles in a three-phase bubble column under foaming and non-foaming conditions |
| topic_facet |
Bubble columns Foaming Gel beads Mixing Particle tracking Solid motion Atmospheric movements Bubble columns Dispersions Fluidized beds Gamma rays Mixing Runway foaming Velocity Dispersion coefficient Gel beads Hydrodynamic stress Immobilized biocatalysts Particle tracking Radioactive particle tracking Solid motions Turbulence parameters Gas foaming |
| description |
Features of the motion of gel particles in a three-phase bubble column with non-foaming and foaming gas–liquid systems, determined by using experiments of radioactive particle tracking (RPT), have been compared. The tracer used is a gel particle which resembles typical immobilized biocatalyst. The tracer trajectory is analyzed to extract relevant information for design purposes. The solid velocity field, turbulence parameters, dispersion coefficients, mixing times and flow transitions are determined and compared. The presence of foam significantly affects many quantified parameters, especially within the heterogeneous flow regime. The hydrodynamic stresses are reduced in the presence of foam, especially close to the disengagement. The dispersion coefficients also decrease, and the solid mixing time is only slightly affected by the presence of foam. Gas holdup, inferred both from RPT experiments and from gamma ray scanning, is higher for foaming systems and leads to a shift in the transition gas velocity towards higher values. © 2017 Elsevier B.V. |
| title |
Features of the motion of gel particles in a three-phase bubble column under foaming and non-foaming conditions |
| title_short |
Features of the motion of gel particles in a three-phase bubble column under foaming and non-foaming conditions |
| title_full |
Features of the motion of gel particles in a three-phase bubble column under foaming and non-foaming conditions |
| title_fullStr |
Features of the motion of gel particles in a three-phase bubble column under foaming and non-foaming conditions |
| title_full_unstemmed |
Features of the motion of gel particles in a three-phase bubble column under foaming and non-foaming conditions |
| title_sort |
features of the motion of gel particles in a three-phase bubble column under foaming and non-foaming conditions |
| publishDate |
2018 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10049541_v26_n6_p1370_Salierno http://hdl.handle.net/20.500.12110/paper_10049541_v26_n6_p1370_Salierno |
| _version_ |
1768541905253040128 |