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dc.contributor.author
Salierno, Gabriel Leonardo  
dc.contributor.author
Maestri, Mauricio Leonardo  
dc.contributor.author
Piovano, Stella Maris  
dc.contributor.author
Cassanello Fernandez, Miryam Celeste  
dc.contributor.author
Cardona, Maria Angelica  
dc.contributor.author
Hojman, Daniel Leonardo  
dc.contributor.author
Somacal, Héctor Rubén  
dc.date.available
2018-09-18T20:05:15Z  
dc.date.issued
2017-05  
dc.identifier.citation
Salierno, Gabriel Leonardo; Maestri, Mauricio Leonardo; Piovano, Stella Maris; Cassanello Fernandez, Miryam Celeste; Cardona, Maria Angelica; et al.; Calcium alginate beads motion in a foaming three-phase bubble column; Elsevier Science Sa; Chemical Engineering Journal; 324; 5-2017; 358-369  
dc.identifier.issn
1385-8947  
dc.identifier.uri
http://hdl.handle.net/11336/60147  
dc.description.abstract
Calcium alginate beads are frequently used to immobilize enzymes or microorganisms for fermentations carried out in agitated or pneumatic reactors. In this work, the well-known Radioactive Particle Tracking (RPT) technique is used to non-invasively extract relevant information of the motion of calcium alginate beads within a three phase bubble column under foaming conditions, which frequently appear in bioreactors operation. Special care is taken to produce a radioactive tracer that perfectly matches the features of the other particles in density and size. In addition, the tracer has the same texture and wettability since the adherence of gas to particles in foaming systems is crucial in determining the solid motion. Particles distribution, solid residence time, velocity fields, dispersion coefficients, shear stress and turbulence kinetic energy are determined from the radioactive tracer trajectories. Compared to previous works in non-foaming systems with denser particles, a relatively strong inward flow and less definite descending motion of the solid near the column wall is found. Turbulence intensities and shear stress are high in the disengagement zone, particularly for the churn-turbulent flow regime. However, since the biocatalyst damage would also depend on the actual exposure to harsh regions, the frequency of visit at different location was calculated to estimate maps of exposure risks as the product of turbulence stresses and these frequencies. Considering the particles motion, the region of largest risk for hydrodynamic damage is close to the gas entrance zone.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Elsevier Science Sa  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
Bubble Columns  
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Calcium Alginate Beads  
dc.subject
Foaming System  
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Hydrodynamic Stress  
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Radioactive Particle Tracking  
dc.subject
Solid Motion  
dc.subject.classification
Otras Ingeniería Química  
dc.subject.classification
Ingeniería Química  
dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS  
dc.title
Calcium alginate beads motion in a foaming three-phase bubble column  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2018-09-17T19:27:19Z  
dc.journal.volume
324  
dc.journal.pagination
358-369  
dc.journal.pais
Países Bajos  
dc.journal.ciudad
Amsterdam  
dc.description.fil
Fil: Salierno, Gabriel Leonardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Industrias; Argentina  
dc.description.fil
Fil: Maestri, Mauricio Leonardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Industrias; Argentina  
dc.description.fil
Fil: Piovano, Stella Maris. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Industrias; Argentina  
dc.description.fil
Fil: Cassanello Fernandez, Miryam Celeste. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Industrias; Argentina  
dc.description.fil
Fil: Cardona, Maria Angelica. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica; Argentina  
dc.description.fil
Fil: Hojman, Daniel Leonardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica; Argentina  
dc.description.fil
Fil: Somacal, Héctor Rubén. Comisión Nacional de Energía Atómica; Argentina. Universidad Nacional de San Martín. Escuela de Ciencia y Tecnología; Argentina  
dc.journal.title
Chemical Engineering Journal  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://dx.doi.org/10.1016/j.cej.2017.05.060  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1385894717308094