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Comparing biofouling control treatments for use on aquaculture nets
Geoffrey Swain1, Nagahiko Shinjo2
1Center for Corrosion and Biofouling Control, Florida Institute of Technology, Melbourne, FL 32901, USA. swain@fit.edu.
International Journal of Molecular Sciences
|December 5, 2014
Summary
Copper-coated nets effectively prevent biofouling, while silicone-coated nets offer easier cleaning. Both treatments impact drag forces, with uncoated nets experiencing the most drag. Silicone may offer a non-toxic antifouling solution despite higher costs.
Area of Science:
- Materials Science
- Marine Biology
- Naval Engineering
Background:
- Biofouling on marine structures increases drag and maintenance costs.
- Nylon nets are widely used in marine applications, but are susceptible to biofouling.
- Antifouling treatments are crucial for maintaining efficiency and longevity of marine equipment.
Purpose of the Study:
- To compare the antifouling properties of uncoated, copper-coated, and silicone-coated nylon nets.
- To evaluate the cleanability, drag, and cost-effectiveness of different net treatments.
- To develop standardized test procedures for quantifying antifouling performance.
Main Methods:
- Fabrication of test panels using uncoated, copper-coated, and silicone-coated nylon nets.
- Development and application of test procedures to quantify antifouling, cleanability, and drag.
- Cost analysis of applying silicone and copper treatments.
Main Results:
- Copper-coated nets demonstrated superior effectiveness in controlling biofouling.
- Silicone-coated nets exhibited the easiest cleaning characteristics.
- Drag forces were influenced by twine diameter, roughness, and the degree of fouling.
- Uncoated nets experienced the highest drag, followed by silicone and then copper-treated nets.
Conclusions:
- Copper coatings provide the most effective biofouling control.
- Silicone coatings offer a promising, potentially non-toxic, alternative for antifouling, though currently costly.
- Further research into silicone formulations could enhance their viability as a sustainable antifouling solution.
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