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dc.contributor.author
Coletto, Mauricio Miguel
dc.contributor.author
Marchisio, Daniele L.
dc.contributor.author
Barresi, Antonello A.
dc.date.available
2018-03-26T18:53:34Z
dc.date.issued
2017-07
dc.identifier.citation
Coletto, Mauricio Miguel; Marchisio, Daniele L.; Barresi, Antonello A.; Mixing and segregation of wheat bran and vegetable pieces binary mixtures in fluidized and fluid-spout beds for atmospheric freeze-drying; Taylor & Francis; Drying Technology; 35; 9; 7-2017; 1059-1074
dc.identifier.issn
0737-3937
dc.identifier.uri
http://hdl.handle.net/11336/39961
dc.description.abstract
The segregation of binary mixtures of nonfood wheat bran and vegetables at different levels of dryness was studied by simulating different stages of the atmospheric freeze-drying by immersion in an adsorbent material process. It was characterized using a new set of four indices, which allow to evaluate not only the segregation level but also the segregation pattern. The mixing performance was evaluated in a fluidized bed (considering also the effect of air superficial velocity) as well as in a spout-fluid bed; peas, carrot disks, and potato slabs were used as food products. In general, it was found that food material segregates toward the bed bottom during the first stages of the drying process in fluidized beds, which translates in a poor contact product-adsorbent. On the contrary, uniform mixing patterns were observed in the spout-fluid bed, for the beginning and final stages of the process. On the other hand, despite the very low cost of nonfood wheat bran and its compatibility with food materials, it presents a channeling fluidization as a consequence of the cohesive properties of its particles. This behavior was also characterized by video analysis in two different fluidized beds. A channel generation and collapse general cycle were highlighted, whose frequency and channel characteristics depend on the air superficial velocity. In addition, three main types of food particle transports were identified: passive (downward), active (upward), and particle-blocking effects. These findings allowed to explain segregation phenomena in these kinds of binary mixtures.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Taylor & Francis
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Atmospheric Freeze-Drying
dc.subject
Binary Mixtures
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Cohesive Powder
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Segregation
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Spout-Fluid Bed
dc.subject.classification
Otras Ingeniería Química
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Ingeniería Química
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INGENIERÍAS Y TECNOLOGÍAS
dc.title
Mixing and segregation of wheat bran and vegetable pieces binary mixtures in fluidized and fluid-spout beds for atmospheric freeze-drying
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-03-26T17:44:49Z
dc.journal.volume
35
dc.journal.number
9
dc.journal.pagination
1059-1074
dc.journal.pais
Reino Unido
dc.journal.ciudad
Londres
dc.description.fil
Fil: Coletto, Mauricio Miguel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina. Politecnico di Torino; Italia
dc.description.fil
Fil: Marchisio, Daniele L.. Politecnico di Torino; Italia
dc.description.fil
Fil: Barresi, Antonello A.. Politecnico di Torino; Italia
dc.journal.title
Drying Technology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1080/07373937.2016.1230741
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.tandfonline.com/doi/full/10.1080/07373937.2016.1230741
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