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Título : Model based analysis of the growth kinetics of microalgal species residing in a waste stabilization pond
Otros títulos : 
Autor: Decostere, Bjorge
Alvarado Martinez, Andres Omar
Sanchez Merchan, Esteban Andres
Pauta Calle, Gladys Guillermina
Rousseau, Diederik
Nopens, Ingmar
Van hulle, Stijn W.h
Correspondencia: Van hulle, Stijn W.h, Stijn.VanHulle@Ugent.be
Palabras clave : Microalgae
Emodelling
Respirometry
Titrimetry
Waste Stabilization Pond
Area de conocimiento FRASCATI amplio: 1. Ciencias Naturales y Exactas
Area de conocimiento FRASCATI detallado: 1.4.1 Química Orgánica
Area de conocimiento FRASCATI específico: 1.4 Ciencias Químicas
Area de conocimiento UNESCO amplio: 05 - Ciencias Físicas, Ciencias Naturales, Matemáticas y Estadísticas
Area de conocimiento UNESCO detallado: 0512 - Bioquímica
Area de conocimiento UNESCO específico: 051 - Ciencias Biológicas y Afines
Fecha de publicación : 2017
Fecha de fin de embargo: 20-sep-2021
Volumen: volumen 9
Fuente: Journal of Chemical Technology and Biotechnology
metadata.dc.identifier.doi: 10.1002/jctb.5131
Tipo: ARTÍCULO
Abstract: 
BACKGROUND: In this study the growth kinetics of Chlorella and Scenedesmus, isolated from a Waste Stabilization Pond were investigated under different conditions of light intensity and temperature. Experimental data were collected by means of a combined respirometric and titrimetric set-up and used to extend a mathematical model. RESULTS: The experimental results illustrated the interdependent relationship of light intensity and temperature, which had a significant influence on the microalgal growth. Consequently, a previously developed model was extended with a mathematical function that describes this relationship. The maximum specific growth rate and oxygen mass transfer coefficient were considered for model calibration. The optimized parameter values for Chlorella were μmax = 0.56 ± 0.0008 d−1 and KLa = 10.02 ± 0.02 d−1. For Scenedesmus, the optimized parameter values were μmax = 0.19 ± 0.0004 and KL a = 7.71 ± 0.004 d−1. The model with optimized parameter settings described the dissolved oxygen production (derived from the respirometric data) and the related proton consumption (derived from the titrimetric data) reasonably well for both microalgal species. The threshold value for Theil's Inequality Coefficient of 0.3 was never exceeded. In addition, model validation for both species was performed indicating good correspondence between model prediction and experimental values. CONCLUSIONS: Based on the experimental observations, a previously developed mathematical model was extended with a function that describes the interaction between light intensity and temperature. After model calibration a difference in maximum specific growth rate between the two microalgal species was observed. This might be explained by differences in cell metabolism. © 2016 Society of Chemical Industry. © 2016 Society of Chemical Industry
Resumen : 
BACKGROUND: In this study the growth kinetics of Chlorella and Scenedesmus, isolated from a Waste Stabilization Pond were investigated under different conditions of light intensity and temperature. Experimental data were collected by means of a combined respirometric and titrimetric set-up and used to extend a mathematical model. RESULTS: The experimental results illustrated the interdependent relationship of light intensity and temperature, which had a significant influence on the microalgal growth. Consequently, a previously developed model was extended with a mathematical function that describes this relationship. The maximum specific growth rate and oxygen mass transfer coefficient were considered for model calibration. The optimized parameter values for Chlorella were μmax = 0.56 ± 0.0008 d−1 and KLa = 10.02 ± 0.02 d−1. For Scenedesmus, the optimized parameter values were μmax = 0.19 ± 0.0004 and KL a = 7.71 ± 0.004 d−1. The model with optimized parameter settings described the dissolved oxygen production (derived from the respirometric data) and the related proton consumption (derived from the titrimetric data) reasonably well for both microalgal species. The threshold value for Theil's Inequality Coefficient of 0.3 was never exceeded. In addition, model validation for both species was performed indicating good correspondence between model prediction and experimental values. CONCLUSIONS: Based on the experimental observations, a previously developed mathematical model was extended with a function that describes the interaction between light intensity and temperature. After model calibration a difference in maximum specific growth rate between the two microalgal species was observed. This might be explained by differences in cell metabolism. © 2016 Society of Chemical Industry. © 2016 Society of Chemical Industry
URI : https://www.scopus.com/record/display.uri?eid=2-s2.0-85006797245&origin=AuthorNamesList&txGid=ef771261ba9f202ea52ecbb7719ff988#
URI Fuente: https://onlinelibrary.wiley.com/journal/10974660
ISSN : 02682575
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