A novel kinetic model for a cocoa waste fermentation to ethanol reaction and its experimental validation

Alvarado-Santos, Eduardo; Aguilar-López, Ricardo; Neria-González, M. I.; Romero-Cortés, Teresa; Robles-Olvera, V.J.; López‐Pérez, Pablo A.

doi:10.1080/10826068.2022.2056746

Cited by 4 publications

(2 citation statements)

References 75 publications

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“…The optical densities of the samples were measured spectrophotometrically at 230 nm using a cellfree medium as a control. The dry weight of the cells in free suspension was determined by filtering a fixed volume of cell suspension through previously weighed 0.22 μm filter paper with the help of a vacuum pump, by drying the filter papers in Petri dishes at 60 °C for three days, and then by weighing them again [39][40][41][42][43].…”

Section: Methodsmentioning

confidence: 99%

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Monitoring Ethanol Fermentation in Real Time by a Robust State Observer for Uncertainties

Aguilar‐López,

Alvarado‐Santos,

Thalasso

et al. 2024

Chem Eng & Technol

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In this article, the problem of real‐time estimation of the fermentative ethanol process is tackled. The considered observer is a model‐based technique that is robust regarding the model parameter uncertainties and inline noisy measurements. An unstructured kinetic model was used to describe the production of ethanol in a batch bioreactor for Saccharomyces cerevisiae. The biomass concentration was selected as the measured bioreactor´s output via an inline device, where the estimate variables were the substrate and ethanol concentrations. An experimental prototype was constructed to demonstrate the observer's real‐time performance. The experimental results show that the robust, smooth sliding mode observer performs better than the standard proportional sliding mode observer.

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Section: Methodsmentioning

confidence: 99%

“…The incubation temperature was 30 °C, and the agitation was 150 rpm [40]. The fermentation time of 25 h was established by considering the results of kinetics obtained in previous works [39–43].…”

Section: Methodsmentioning

confidence: 99%

Monitoring Ethanol Fermentation in Real Time by a Robust State Observer for Uncertainties

Aguilar‐López,

Alvarado‐Santos,

Thalasso

et al. 2024

Chem Eng & Technol

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Kinetic modeling of cell growth and value-added products accumulation of Thraustochytrium striatum

Xiao,

An,

et al. 2024

Biomass and Bioenergy

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Robust fractional control based on high gain observers design (RNFC) for a Spirulina maxima culture interfaced with an advanced oxidation process

et al. 2023

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In this article, the theory of fractional control and state estimation applied to biological science is studied, particularly in hybrid wastewater treatment. For nonlinear systems with stable and known states, an interconnected fractional robust control design with high gain state estimation is proposed to generate a control insensitive to nutritional perturbations originated by an advanced oxidation process in a microalgae culture. An online study is proposed for the mineralization of glyphosate and its feedback in a microalgae cultivation process where through the designed control the light dynamics is manipulated to robustly and automatically regulate the biomass signal provided by an analog sensor and nutrient estimation via state observers. In the literature, there are few results developed with real-time results. This work is a multidisciplinary study with online results where the performance and improvement of the proposed complex process are concluded.

show abstract

A novel kinetic model for a cocoa waste fermentation to ethanol reaction and its experimental validation

Cited by 4 publications

References 75 publications

Monitoring Ethanol Fermentation in Real Time by a Robust State Observer for Uncertainties

Monitoring Ethanol Fermentation in Real Time by a Robust State Observer for Uncertainties

Kinetic modeling of cell growth and value-added products accumulation of Thraustochytrium striatum

Robust fractional control based on high gain observers design (RNFC) for a Spirulina maxima culture interfaced with an advanced oxidation process

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