Data/hora: 04/06/2024 14:58:04

Provedor de dados: | 5
País: | France
Título: | Compactation for a better management of marine biomass: applications to fish discards and by-products
Autores: | Perez-galvez, Raul.
Data: | 2009-12-21
Ano: | 2009
Palavras-chave: | Environment; Compression; Aquaculture; Fishing; By product; Environnement; Compression; Aquaculture; Pêche; Co produit.
Resumo: | In the framework of the future application of a zero-discard policy in EU fisheries, this thesis aims to develop and implement an efficient and integral waste management both on board the fishing vessels and in land (fish auctions and fish processing industry). To this end, it proposes a compaction operation able to reduce the volume and the water activity of the fish wastes, thus favouring their handling and reducing the economical costs associated to their transport and storage. To asses the viability of a waste compaction operation, the main operation factors governing the process were identified, and their influence upon the performance of the compacting operation was investigated by a statistical approach. Sardine was chosen as fish species since it represents an important proportion over the whole amount of fish discards from the French fisheries. The statistical model was optimised  and validated by the construction of a pre-industrial scale compaction prototype, able to treat up to 10 kilograms of sardines per batch.  The main drawback associated to fish waste compaction is the generation of a variable amount of wastewaters, which cannot be directly discharged without a suitable treatment in order to reduce its organic load. Pressure-driven filtration was chosen to  this purpose, as it does not imply the consumption of chemical reagents and its energy requirements are low. The proposed wastewater treatment comprised two series filter cartridges, able to remove most of the fine solids followed by a membrane batch concentration unit able to remove most of the solutes from the effluent, giving rise to a final  permeate meeting with the regulations on wastewaters.
Tipo: | Text
Idioma: | Inglês
Identificador: | http://archimer.ifremer.fr/doc/2009/these-7390.pdf
Editor: | Nantes
Relação: | http://archimer.ifremer.fr/doc/00000/7390/
Formato: | application/pdf