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Sensors 2015, 15(3), 4766-4780; doi:10.3390/s150304766

Design and Test of a Low-Cost RGB Sensor for Online Measurement of Microalgae Concentration within a Photo-Bioreactor

1
BioSys, University of Mons, Boulevard Dolez 31, 7000 Mons, Belgium
2
Unidad Académica Juriquilla, Instituto de Ingeniería, Universidad Nacional Autónoma de México, Blvd. Juriquilla 3001, Querétaro 76230, Mexico
3
Department of Chemical Engineering, Catholic University of Leuven, 3001 Leuven, Belgium
*
Author to whom correspondence should be addressed.
Academic Editor: Alexander Star
Received: 10 November 2014 / Revised: 16 December 2014 / Accepted: 15 January 2015 / Published: 26 February 2015
(This article belongs to the Special Issue Sensors for Bioprocess Monitoring and Control)
View Full-Text   |   Download PDF [1147 KB, uploaded 26 February 2015]   |  

Abstract

In this study, a low-cost RGB sensor is developed to measure online the microalgae concentration within a photo-bioreactor. Two commercially available devices, i.e., a spectrophotometer for offline measurements and an immersed probe for online measurements, are used for calibration and comparison purposes. Furthermore, the potential of such a sensor for estimating other variables is illustrated with the design of an extended Luenberger observer. View Full-Text
Keywords: biomass concentration; microalgae; bioprocess; instrumentation; state estimation; monitoring; Luenberger observer; Arduino board biomass concentration; microalgae; bioprocess; instrumentation; state estimation; monitoring; Luenberger observer; Arduino board
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Benavides, M.; Mailier, J.; Hantson, A.-L.; Muñoz, G.; Vargas, A.; Van Impe, J.; Vande Wouwer, A. Design and Test of a Low-Cost RGB Sensor for Online Measurement of Microalgae Concentration within a Photo-Bioreactor. Sensors 2015, 15, 4766-4780.

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