Data/hora: 03/06/2024 09:36:32

Provedor de dados: | Institutional Archive of Ifreme (ArchiMer)
País: | France
Título: | Foam fractionation efficiency of a vacuum airlift—Application to particulate matter removal in recirculating systems
Autores: | Barrut, Bertrand; Blancheton, Jean-paul; Callier, Myriam; Champagne, Jean-yves; Grasmick, Alain.
Data: | 2013
Ano: | 2013
Palavras-chave: | POM; Vacuum airlift; Foam fractionation efficiency; RAS; Aquaculture.
Resumo: | The accumulation of particulate organic matter (POM) in recirculating aquaculture systems (RAS) has become an important issue with the intensification of finfish production. The objective of this study was to assess the foam fractionation efficiency of a vacuum airlift in different conditions (POM concentrations, airflow rates, bubble sizes, water renewal rates and feed addition). In sea water, the vacuum airlift allowed removing 20% of the initial POM concentration per hour (foam fractionation efficiency), corresponding to a 20.7-fold concentration factor between the tank and the foam. In rearing conditions, efficiency increased with decreasing water renewal rate or increasing POM concentration. An increase in airflow rate from 10 to 80 L min−1 in the vacuum airlift significantly decreased foam fractionation efficiency when feed was added to the water. The impact of feeding was only observed with high airflow rates where bubble coalescence occurred. Calculated POM production by fish ranged between 15.9 and 23.5 g h−1 and was equivalent to estimations based on feed conversion ratio (FCR). This indicated that all the POM produced was extracted by the vacuum airlift.
Tipo: | Text
Idioma: | Inglês

Identificador:

http://archimer.ifremer.fr/doc/00138/24910/23576.pdf

DOI:10.1016/j.aquaeng.2012.10.003

Editor: | Elsevier
Relação: | http://archimer.ifremer.fr/doc/00138/24910/
Formato: | application/pdf
Fonte: | Aquacultural Engineering (0144-8609) (Elsevier), 2013 , Vol. 54 , P. 16-21
Fonte: | 2012 Elsevier B.V. All rights reserved