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Eradication of algae in ships’ ballast water by electrolyzing

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Abstract

In order to verify the effectiveness of electrolytic treatment on ships’ ballast water, experiments are carried out by a pilot system in laboratory. The raw seawater and seawater with different concentrations of different algae are simulated as ships’ ballast water. The algae in the raw seawater can be killed if it is treated by electrolysis with an initial residual chlorine concentration of 5 mg/L. If the seawater with one kind of algae (Nitzschia closterum, Dicrateria spp., or Pyramidomonnas sp.105cells/mL) is treated by electrolysis with an initial residual chlorine concentration of 5 mg/L, the alga can be sterilized. If the seawater with one kind of algae (Dunaliella sp., Platymonas or Chlorella spp.) is directly treated by electrolyzing with an initial residual chlorine concentration of 4 mg/L, the instant mortality changes with the concentration of different algae. However, after 72 hours, in all treated samples, there are no live algal cells found.

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Authors and Affiliations

  1. Marine Engineering College, Dalian Maritime University, Dalian, 116026, China

    Dang Kun, Sun Pei-ting & Song Yong-xin

  2. Environmental Science and Technology College, Dalian Maritime University, Dalian, 116026, China

    Xiao Jing-kun

Authors
  1. Dang Kun
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  2. Sun Pei-ting
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  3. Xiao Jing-kun
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  4. Song Yong-xin
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Additional information

Foundation item: Supported by GloBallast. China Item 1B4C.

DANG Kun was born in December 1965. He is an Associate Professor and a Doctor of Marine Engineering at Dalian Maritime University. His current research interest is ships’ ballast water treatment. Dang has 6 books to his credit, one patent proclaimed and two patents granted and registered. More than 10 of his technical papers have been published. At present, he works as a visiting scholar at School of Engineering in James Cook University, Australia.

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Dang, K., Sun, Pt., Xiao, Jk. et al. Eradication of algae in ships’ ballast water by electrolyzing. J Mar. Sc. Appl. 5, 58–61 (2006). https://doi.org/10.1007/s11804-006-6033-x

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  • DOI: https://doi.org/10.1007/s11804-006-6033-x

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