Consulta: subjectFacets:"Dynamics and control"
Registros recuperados: 2
Data/hora: 10/06/2024 05:36:28

Maximizing microalgae productivity in a light-limited chemostat
Provedor de dados: 5
Autores: Martinez, Carlos; Bernard, Olivier; Mairet, Francis.
Light supply is one of the most important parameters to be considered for enhancing microalgae growth in photobioreactors (PBR) with artificial light. However, most of the mathematical works do not consider incident light as a parameter to be optimized. In this work based on a simple model of light-limited growth, we determine optimal values for the dilution rate and the incident light intensity in order to maximize the steady-state microalgal surface productivity in a continuous culture. We also show that in optimal conditions there is a minimal initial microalgal concentration (and we give a simple expression to determine it) to guarantee the persistence of the population. Finally, in the context of enhancing microalgae productivity by reducing light...
Tipo: Text
Palavras-chave: Dynamics and control; Industrial biotechnology; Photoinhibition; Biomass productivity; Microalgae; Photoacclimation; Chlorophyll.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00439/55091/56653.pdf

Dynamics and control of a periodically forced microalgae culture
Provedor de dados: 5
Autores: Martínez, Carlos; Mairet, Francis; Martinon, Pierre; Bernard, Olivier.
Microalgae cultivation with wastewater is a promising way of reducing the energetic needs for wastewater treatment and the costs of biofuel production. However, the very turbid medium is not favorable for the development of microalgae. Indeed, light, the key element for photosynthesis, rapidly vanishes along depth due to absorption and scattering. Therefore it is crucial to understand the effects of the depth on turbid cultures. In this work, we study theoretically the long-term behavior of a continuous culture of microalgae exposed to a periodic source of light. By allowing periodic variations of the depth and the hydraulic retention time, we show that the microalgae population is forced to a periodic regime. Finally, we address numerically the problem of...
Tipo: Text
Palavras-chave: Dynamics and control; Industrial biotechnology; Wastewater; Biomass productivity; Microalgae.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00505/61623/65654.pdf