Ultrafiltration for environment safety in shellfish production: removal of oyster gametes in hatchery effluents

Type Article
Date 2019-02
Language English
Author(s) Cordier Clémence1, Stavrakakis ChristopheORCID2, Dupuy Beatrice2, Papin Mathias2, Sauvade Patrick3, Coelho Franz3, Moulin Philippe1
Affiliation(s) 1 : Laboratoire de Mécanique, Modélisation et Procédés Propres (M2P2-CNRS-UMR 7340), Aix-Marseille Université, Europôle de l’Arbois, BP 80, Bat. Laennec, Hall C, 13545 Aix-en-Provence cedex 04, France
2 : Stn Ifremer Bouin, Plateforme Expt Mollusques Marins, Polder Champs, F-85230 Bouin, France
3 : Suez - Aquasource, 20, avenue Didier Daurat, 31029 Toulouse cedex 04, France
Source Aquacultural Engineering (0144-8609) (Elsevier BV), 2019-02 , Vol. 84 , P. 80-90
DOI 10.1016/j.aquaeng.2018.12.008
WOS© Times Cited 5
Keyword(s) Ultrafiltration, Hatchery effluents, Oyster gametes removal, Marine biodiversity
Abstract

Triploid oysters are favoured by the aquaculture industry because of their sterility, which results in two advantages: a faster growth than natural oysters and a constant quality throughout all the year, which is attractive for consumers. In France, these oysters are mainly produced by mating natural and tetraploid oysters whose production poses a risk for marine environmental biodiversity if biological material is released into the environment. Therefore, effluents from farms which could produce those kinds of oysters must be treated. The objective of this work was to treat shellfish hatchery effluents by ultrafiltration. The retention of gametes by the membrane, was validated for different scenario, 5 log removals were obtained, and their viability was evaluated after treatment highlighting a destruction of these species after air-backwash. The sustainability of the process facing this organic pollution on the duration of each test but also on the period of the study was demonstrated. A protection of the marine environment biodiversity is obtained with ultrafiltration processes.

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