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Conductive Coating Method to Inhibit Marine Biofouling

SpecialChem / Feb 28, 2011

Marine biofouling refers to the undesirable growth of marine organisms on immersed artificial structures such as ship hulls, jetty pilings, navigational instruments, aquaculture net cages and seawater intake pipes. Cage aquaculture and set-net fishery are the most common practices used in fishing industry, but have problems associated with marine biofouling pollution, which reduces cage aquaculture efficiency and fishing net life, and increases the service costs. Traditional method used to prevent Marine biofouling is the addition of chlorine, but this lead to marine poisoning. Another efficient method is the use of antifouling coatings which are good inhibitors. But their copper or organic metal content is harmful to the marine environment. The use of paints containing tri-butyl tin (TBT) was prohibited by the international marine organization. Tri-butyl tin compounds are known to act as organic pollutants that bioconcentrate on the marine predators' food chain. Alternative, nontoxic paint compounds or low surface tensions have been studied, including silicon acid (used to prevent biofouling as well), fluoro-polyurethane, polyurethane and perfluorinated polymers.

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