MODEL OF BIOLOGICAL ASSIMILATION OF CO2 AND O2 PRODUCTION THROUGH THE GROWTH OF THE MICROALGA SCENEDESMUS DIMORPHUS IN SEMI-CONTINUOUS CULTIVATION IN AN AIRLIFT BIOREACTOR.
MODEL OF BIOLOGICAL ASSIMILATION OF CO2 AND O2 PRODUCTION THROUGH THE GROWTH OF THE MICROALGA SCENEDESMUS DIMORPHUS IN SEMI-CONTINUOUS CULTIVATION IN AN AIRLIFT BIOREACTOR.
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DOI: https://doi.org/10.22533/at.ed.317492414036
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Palavras-chave: modelado, microalga, bioreactor airlift, cultivo semicontinuo
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Keywords: modelling, microalga, airlift bioreactor, semicontinuous culture
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Abstract: The biological assimilation of CO2 by the microalga Scenedesmus dimorphus was modeled in a semicontinuous culture inside an airlift reactor. The experimental data was obtained from an experimental process, where the aforementioned microalga was grown using combustion gases from a steam boiler. The mathematical model obtained in this research was carried out using mass balance, involving the mass transfer of CO2, the formation rate of the HCO3- ion, the carrying capacity of the microalga, the intensity of light, the pH of the cultivation and O2 production. The proposed model reproduced the biomass values obtained experimentally, since a maximum R2 value of 0.995 was obtained. The experiments were done in six cultures where the light intensity was evaluated at 27, 60.7 and 76.3 µmol m-2 s-1, using light/dark cycles of 14/10, 16/8 and 24/0. The gas flow used was of 0.275 L min-1. In the simulation of dissolved O2 it was observed that the maximum concentration was found between 50 and150 h of each experiment.
- Citlalli Adelaida , Arroyo Gómez
- Jose Luis Contreras Larios