Assessment of sacrificial anode impact by aluminum accumulation in mussel Mytilus edulis: A large-scale laboratory test

Mao, Andrea; Mahaut, Marie-Laure; Pineau, Samuel; Barillier, Daniel; Caplat, Christelle

Assessment of sacrificial anode impact by aluminum accumulation in mussel Mytilus edulis: A large-scale laboratory test

2011

Mao, Andrea | Mahaut, Marie-Laure | Pineau, Samuel | Barillier, Daniel | Caplat, Christelle

Since the early 1960s, the application of aluminum alloy sacrificial anodes to mitigate marine corrosion has been well known. The aim of this work was to study aluminum bioconcentration in Mytilus edulis by an in vitro test performed in two tanks: the first containing non-contaminated water (NCW) and the second containing aluminum-contaminated water (CW) (530μgL⁻¹) released by sacrificial anode. The mussels were collected and examined over a period of 8weeks. A comparison between the aluminum concentrations in the digestive glands of mussels from the CW and NCW tanks shows that the highest value (1700mg/kgd.w.) was found in the CW mussels collected after 13days. In NCW, the mean aluminum concentration in digestive glands during the test was 281mg/kgd.w. The rapid concentration decrease in digestive glands is probably due to the inhibition of filtering activity due to valve closure at the high concentration as well as the induction of the detoxification response.

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