Modeling an Airlift Reactor for the Growing of Microalgae

Lara, Gustavo A.; Moreno, Luis; Ramírez, Yendery; Cisternas, Luis A.

Modeling an Airlift Reactor for the Growing of Microalgae

Gustavo A. Lara¹, Luis Moreno^{2, 3}, Yendery Ramírez^{2, 4}, Luis A. Cisternas^{2, *}

¹ Departamento de Física, Universidad de Antofagasta, 1240000, Antofagasta, Chile

² Departamento de Ingeniería Química y Procesos de Minerales, Universidad de Antofagasta, 1240000, Antofagasta, Chile

³ Department of Chemical Engineering and Technology, KTH Royal Institute of Technology, SE-100 44, Stockholm, Sweden

⁴ School of Business and Management, Lappeenranta University of Technology, FI-53851, Lappeenranta, Finland

Article Information

Identifiers and Pagination:

Year: 2018
Volume: 12
First Page: 80
Last Page: 94
Publisher ID: TOCENGJ-12-80
DOI: 10.2174/1874123101812010080

Article History:

Received Date: 14/5/2018
Revision Received Date: 4/7/2018
Acceptance Date: 28/8/2018
Electronic publication date: 28/09/2018
Collection year: 2018

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© 2018 Lara et al.

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

^* Address correspondence to this author at the Departamento de Ingeniería Química y Procesos de Minerales, Universidad de Antofagasta, 1240000, Antofagasta, Chile; Tel: 5655 2637323; E-mail: luis.cisternas@uantof.cl

Objective:

The flow dynamics of an airlift reactor for the growing of microalgae is modeled using Computational Fluid Dynamics (CFD). The model is applied to the operation and optimization of the reactor, giving a valuable picture of the liquid movement and carbon dioxide trajectory at different air injection flow rates.

Methods:

A novel aspect of the model is that air and carbon dioxide are injected at separated locations. Air is injected at the bottom of the reactor and CO₂ injection takes place in the downcomer region of the reactor to obtain longer CO₂ paths, improving its transference.

Results:

The results show modeling is a useful tool in the control of the reactor operation; for example, in avoiding the sedimentation of microalgae or for detecting the existence of zones with extremely low CO₂ concentrations.

Keywords: Photo-bioreactor, Microalgae, Biofuel, Modeling, CFD, Fluent, Bubble column reactor.

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RESEARCH ARTICLE

Modeling an Airlift Reactor for the Growing of Microalgae

Article Information

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Abstract

Objective:

Methods:

Results:

Track Your Manuscript

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About the Journal

The Open Chemical Engineering Journal

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