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Toxicity experiments with water organisms exposed to biocides for ballast water treatment
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| Acronym |
Ballast water |
| Start & end date |
2006-ongoing |
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Client(s) & funding |
International companies |
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Objectives |
Determine the residual toxicity of ballast water treated with biocides to different marine species in single species tests. |
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Summary |
The residual toxicity of treated ballast water was tested using bacteria, algae, molluscs, rotifers, crustacean and a fish in singe species tests. The ecotoxicological endpoint values (NOEC, LOEC, EC50, EC100) were determined. |
| Results |
Ballast water is used by ships to control the balance at different cargo. Together with the ballast water non-indigenous species are transported over the world. Discharge of ballast water may result in local disturbances of coastal ecosystems. IMO has set a mandatory framework for ballast water management on board ships.
This project is led by NIOZ Royal Netherlands Institute for Sea Research with IMARES as partner for ecotoxicological research.
In cooperation with the Royal Netherlands Institute for Sea Research (NIOZ) efficiency and residual toxicity of ballast water treatment systems is assessed in relation to the IMO requirements (G9).
The large test beds facilities at NIOZ (300 m3) storage capacity, facilitate realistic conditions for land-based testing of ballast water treatment systems. Treated water can be transported to the IMARES laboratory within 30 min. and be processed in bioassays to assess residual effects. The mesocosm facilities of IMARES offer possibilities for pilot-scale studies on treatment efficacy in advance to the final land-based studies, as well as studies in specifically designed mesocosms in order to assess the magnitude of effects in natural communities.
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Staff involved |
klaas Kaag, Andrea Sneekes, Edwin Foekema |
| Cooperation partners |
This project led by NIOZ Royal Netherlands Institute for Sea Research with IMARES as partner for ecotoxicological research |
| Links |
www.hamannag.com/ballast
www.greenship.nl |
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