AI Article Synopsis
- The study tested how different water treatment methods (filtration, UV, chlorine, ozone) affect the growth of Vibrio cholerae and Vibrio parahaemolyticus bacteria in seawater used for ballast tanks.
- After treatment, the bacteria were added to the water and incubated, revealing that they generally survived better in treated water compared to untreated.
- Notably, the presence of ozone led to the highest bacterial growth, while natural microorganisms added to the water actually reduced the growth of both V. cholerae and V. parahaemolyticus.
Article Abstract
In laboratory experiments we added Vibrio cholerae and Vibrio parahaemolyticus to bottles with seawater previously treated by filtration, UV, chlorine or ozone. The purpose was to investigate the influence of different treatment techniques on the growth potential of these bacteria in simulated ballast water tanks. Residual oxidants were removed before inoculation, and the bottles were incubated at 21 ± 1 °C. The growth potential of the vibrios was investigated in two different experimental setups, i.e. in presence and absence of added natural microorganisms. In general, V. cholerae and V. parahaemolyticus rapidly lost their culturability after inoculation and storage in untreated seawater, but showed increased survival or growth in the treated water. Highest growth was observed in water previously exposed to high concentrations of ozone. Addition of natural microorganisms reduced the growth of V. cholerae and V. parahaemolyticus.
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| http://dx.doi.org/10.1016/j.marenvres.2012.10.002 | DOI Listing |
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