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Coupling of bio-reactors to increase maximum sustainable yield

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dc.creator /Auger, Pierre
dc.creator Moussaoui, A.
dc.date 2022
dc.date.accessioned 2022-04-27T17:37:47Z
dc.date.available 2022-04-27T17:37:47Z
dc.identifier https://www.documentation.ird.fr/hor/fdi:010084511
dc.identifier oai:ird.fr:fdi:010084511
dc.identifier Auger Pierre, Moussaoui A.. Coupling of bio-reactors to increase maximum sustainable yield. 2022, 10 (4), p. 555 [18 p.]
dc.identifier.uri http://biblioteca-repositorio.clacso.edu.ar/handle/CLACSO/169090
dc.description In the field of fisheries management, the objective is to obtain an optimal catch while maintaining the fishery resource at a sufficiently high level to avoid the extinction of the exploited species. In mathematical fishery models, the fishing effort that must be implemented to have a sustainable fishery with a maximum harvest rate in the long term is sought. This goal is called the "Maximum Sustainable Yield" (MSY). In the chemostat, the substrate can be seen as prey of which the predator is the product. MSY search is thus extended to the classical chemostat model with a Monod function. There exists a dilution rate that maximizes the product synthesis. The study is extended to the case of the gradostat with fast substrate and product exchanges between two coupled bioreactors. The existence of two time scales makes it possible to apply methods of aggregation of variables to derive a reduced model governing a few global variables describing the dynamics of the complete system at the slow time scale. The analysis of the mathematical aggregated model is performed. Existence of equilibria as well as local and global stability are studied. The overall product yield in the system of coupled bioreactors may be greater than the sum of the yields of the two uncoupled bioreactors, i.e., if they functioned without connection between them. The increase in product yield is all the more important as the distribution of the substrate and of the product is asymmetrical between the two coupled bioreactors. The model is applied to fish farming by considering the coupling of two breeding sites. Here again, the model makes it possible to find the fast fish exchanges that must be established between the two breeding basins to optimize the overall yield of the farm.
dc.language EN
dc.subject bioreactor
dc.subject maximum sustainable yield
dc.subject fast substrate and product
dc.subject exchanges
dc.subject aggregation of variables
dc.subject global stability of equilibria
dc.subject gradostat
dc.subject fish farming
dc.title Coupling of bio-reactors to increase maximum sustainable yield
dc.type text


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