Electrochemical prevention of marine biofouling with a carbon-chloroprene sheet

S. Nakasono, J. G. Burgess, K. Takahashi, M. Koike, C. Murayama, S. Nakamura, Tadashi Matsunaga

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Abstract

A carbon-chloroprene sheet (CCS) electrode was used for the electrochemical disinfection of the marine gram-negative bacterium Vibrio alginolyticus. When the electrode was incubated in seawater containing 105 cells per ml for 90 min, the amount of adsorbed cells was 4.5 X 103 cells per cm2. When a potential of 1.2 V versus a saturated calomel electrode was applied to the CCS for 20 min, 67% of adsorbed cells were killed. This disinfection was due to the direct electrochemical oxidation of cells and not to a change in pH or to the generation of toxic substances, such as chlorine. In a 1-year field experiment, marine biofouling of a CCS-coated cooling pipe caused by attachment of bacteria and invertebrates was considerably reduced by application of a potential of 1.2 V versus a saturated calomel electrode. Since this method requires low potential electrical energy, use of a CCS coating appears to be a suitable method for the clean prevention of marine biofouling.

Original languageEnglish
Pages (from-to)3757-3762
Number of pages6
JournalApplied and Environmental Microbiology
Volume59
Issue number11
Publication statusPublished - 1993
Externally publishedYes

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ASJC Scopus subject areas

  • Biotechnology
  • Environmental Science(all)
  • Microbiology

Cite this

Nakasono, S., Burgess, J. G., Takahashi, K., Koike, M., Murayama, C., Nakamura, S., & Matsunaga, T. (1993). Electrochemical prevention of marine biofouling with a carbon-chloroprene sheet. Applied and Environmental Microbiology, 59(11), 3757-3762.