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International Journal of Chemical Reactor Engineering

Ed. by de Lasa, Hugo / Xu, Charles Chunbao

IMPACT FACTOR 2017: 0.881
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Volume 16, Issue 10


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Volume 1 (2002)

Effect of Biomass Concentration on Oxygen Mass Transfer, Power Consumption, Interfacial Tension and Hydrodynamics in a Multiphase Partitioning Bioreactor

Manuel Alejandro Lizardi-Jiménez
  • CONACYT – Instituto Tecnológico Superior de Tierra Blanca, Avenue Veracruz s/n, Héroes de Puebla, Colonia Pemex, 95180 Tierra Blanca, Veracruz, México
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/ Pedro López-Ordáz
  • Laboratorio de Micro y Nanotecnología, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala s/n, Santo Thomas, Miguel Hidalgo, 11340 México City, México
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/ Margarita Mercedes González-Brambila
  • Departamento de Energía, Laboratorio de Análisis de Procesos, Universidad Autónoma Metropolitana-Azcapotzalco, San Pablo 180 Azcapotzalco, Colonia Reynosa Tamaulipas, 02200 México City, México
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/ Andrea Linares-Morales
  • Neolpharma S.A. de C.V., Pharmaceutical Group, Boulevard Ferrocarrilles 277, 02300, Azcapotzalco, México City, México
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/ Rodrigo Melgarejo-Torres
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  • Departamento de Procesos y Tecnología, Universidad Autónoma Metropolitana-Cuajimalpa, Vasco de Quiroga 4871, Col. Santa Fe, 05348 México City, México
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Published Online: 2018-03-16 | DOI: https://doi.org/10.1515/ijcre-2017-0201


Several studies have reported that the hydrodynamics are not affected by the biomass in multiphase partitioning bioreactors. This work aims to demonstrate the effect of biomass concentration (0, 1, 3 and 5 g L−1) on the oxygen mass transfer coefficients, the droplet size of the dispersed phase, power consumption and superficial tension in a multiphase partitioning bioreactor (ionic liquid-aqueous-air-biomass system). At a biomass concentration of 5 g L−1, the oxygen mass transfer coefficient (kLa) increased by 55% (249 h−1) compared with the abiotic system (160 h−1). In the multiphasic system, the droplet size (d32) decreased when the biomass concentration was increased, producing an increment in the mass transfer area of the dispersed phase. In addition, the power consumption decreased by 44 % compared to a previous report without biomass. Furthermore, the increment of biomass concentration decreased the superficial tension by up to 15 %. A biomass increment in a multiphase system not also increases product yield, but also enhances the bioconversion process. The results obtained suggest that it is obligatory to consider the effect of biomass concentration on hydrodynamic characterisation, design, scale-up and optimisation for improving the performance of biotechnological processes using multiphase bioreactors.

Keywords: biomass effect; hydrodynamics; superficial tension; power consumption; oxygen mass transfer; multiphase bioreactors


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About the article

Received: 2017-10-23

Accepted: 2018-03-02

Revised: 2018-01-03

Published Online: 2018-03-16

Conflict of interests: The authors declare no conflict of interests.

Citation Information: International Journal of Chemical Reactor Engineering, Volume 16, Issue 10, 20170201, ISSN (Online) 1542-6580, DOI: https://doi.org/10.1515/ijcre-2017-0201.

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