Non-Newtonian Behavior Effect on Gas-liquid Mass Transfer using an Anchor Impeller for CSTR Bioreactors: A CFD Approach

Niño López, Lilibeth; Peñuela Vásquez, Mariana; Gelves, Germán Ricardo

Non-Newtonian Behavior Effect on Gas-liquid Mass Transfer using an Anchor Impeller for CSTR Bioreactors: A CFD Approach

2018

Niño López, Lilibeth | Peñuela Vásquez, Mariana | Gelves, Germán Ricardo

ABSTRACT: Objectives: kLa mass transfer coefficient was predicted using CFD (computational fluid dynamics) for analyzing non-newtonian effects on gas liquid mass transfer in a 10 L bioreactor stirred with an Anchor Impeller. Methods/Statistical Analysis: The set up bioreactor configurations were defined by typical culturing conditions used for fungi organism. Bubble breakage frequency and coalescence rate were simulated using Luo - Colaloglou and Tavlarides models and PBM approaches, respectively. Simulated results from different shear rates due to non-newtonian behaviour are compared by analyzing its influences in bubble size and power input. Findings: A clear relationship between high levels of shear rates and small bubble sizes is found in this work. The later is also associated with the high values of kLa simulated (270 h-1) and compared to levels found at low shear rates (62 h-1). Application/Improvements: Impressed by these findings new design optimizations for non-newtonian bioprocessing applications would be improved using CFD.

Afficher plus [+]

COL0023715

Afficher plus [+]

Mots clés AGROVOC

bioreactors biorreactores biotechnology biotecnología dinámica de fluidos fluid dynamics fluidos no newtonianos non-newtonian fluids

Informations bibliographiques

Editeur

Indian Society for Education and Environment, Bioprocesos, Chennai, India

D'autres materias

Fluidos viscosos; Anchor; Sauter diameter; Viscous fluid; Bubble coalescence

Langue

anglais

Format

5, application/pdf, application/pdf

Licence

info:eu-repo/semantics/openAccess, http://creativecommons.org/licenses/by/2.5/co/, http://purl.org/coar/access_right/c_abf2, https://creativecommons.org/licenses/by/4.0/

ISSN

0974-6846, 0974-5645

Type

Info:eu-Repo/semantics/article; Info:eu-Repo/semantics/publishedversion; Http://purl.org/coar/resource_type/c_2df8fbb1; Https://purl.org/redcol/resource_type/art; Artículo De Investigación

Sur AGRIS depuis: 2024-10-18

Format: Dublin Core

Fournisseur de données

Cette notice bibliographique a été fournie par Universidad de Antioquía

Découvrez la collection de ce fournisseur de données dans AGRIS

Liens

DOI https://hdl.handle.net/10495/35487

Consulter Google Scholar

Si vous remarquez des informations incorrectes dans cette référence bibliographique, veuillez nous contacter à l'adresse agris@fao.org