Design and test of a low-cost RGB sensor for online measurement of microalgae concentration within a photo-bioreactor

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 pu...

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Bibliographic Details
Published in:Sensors (Basel, Switzerland) Switzerland), 2015-02, Vol.15 (3), p.4766-4780
Main Authors: Benavides, Micaela, Mailier, Johan, Hantson, Anne-Lise, Muñoz, Gerardo, Vargas, Alejandro, Van Impe, Jan, Vande Wouwer, Alain
Format: Article
Language:English
Subjects:
Algae
Alternative energy
Arduino board
Biomass
biomass concentration
bioprocess
Bioreactors
Biosensing Techniques
Calibration
Devices
Electronic mail systems
Estimating
instrumentation
Light
Luenberger observer
microalgae
Microalgae - isolation & purification
monitoring
Online
Online Systems
Remote Sensing Technology
Sensors
Software
Spectrophotometers
Spectrophotometry
state estimation
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Summary: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.
ISSN:1424-8220
1424-8220
DOI:10.3390/s150304766