Testing different types of impregnations and its effect on bio fouling




Ólafur Ögmundarson, Þorleifur Eiríksson, Böðvar Þórðarson, Gunnar Þórðarson

Supported by:

Tækniþróunarsjóður, AVS


Gunnar Þórðarson

Regional Manager

Testing different types of impregnations and its effect on bio fouling

The use of copper oxide in the treatment paint of cow bags is highly criticized and has been banned in many places due to its negative effects on the environment. Within the European Union, the use has been grayed out due to these negative effects of the substance on the environment, but it has been difficult to ban it as no substances have been found that repel sediments as well from the sacs as copper oxide. In the Norðurkví project, there has been a project where an attempt has been made to find a substance that could replace the copper oxide, but no permanent solution has been found. The results of this experiment are presented in this report.

Usage of copper oxide in treating net ‐ bags in aquaculture is a controversial and has been banned in many countries due to its negative environmental impact. Within the EU, use of copper oxide has been put on a gray list but not banned because no substitute treating material has been found which has the same effect in keeping algae away from the nets ‐ bags. The North Cage project has been looking into finding alternative solutions to copper oxide, and the conclusion of this research is drafted in this report.

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