Steen-Hansen - Copper Based Cleaning Aquaculture Nets
Copper has been used for several centuries for it's antifouling properties. It is a natural occurring substance and an essential element for most plants and animals. The most commonly used form of copper salts is cuprous oxide. (Cu2O). This is produced from recycled copper pipes, wires, refrigerators etc. Cuprous oxide works as an antifoulant against both algae and animal fouling. The effect is long lasting, as long as the paint system is leaching copper ions at sufficient amounts to prevent the fouling species. Some products are also boosted with copper thiocyanate. (CuSCN), this is a copper salt added to paint in order to speed up the initial protection.
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The well-proven properties of copper, which provide general protection against fouling and have minimal effect on the environment, have made it the first choice among anti-fouling products. The type of copper usually used to prevent fouling is copper oxide (Cu2O). It is produced from recycled pipes, cables, fridges, etc. Copper oxide works against fouling caused by both algae and animals, and the effect lasts as long as the coating emits a sufficient level of concentration.In the sediments, copper is quickly converted into harmless, non-bioactive compounds.
At Steen-Hansen we have developed impregnation products with so-called boosters. That means we use substances that complement copper and provide extended protection against hydroids and other problematic species. The combined effect of copper oxide with Econea® or CuSCN results in extra protection in the sea at the same time as it reduces the effect on the environment.
AquaNet Premium and AquaNet 360 are product series that utilise the increased effect from boosters – biocides. And they have significantly reduced copper content.
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