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 language | English |
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Pages (from-to) | 3757-3762 |
Number of pages | 6 |
Journal | Applied and Environmental Microbiology |
Volume | 59 |
Issue number | 11 |
Publication status | Published - 1993 |
Externally published | Yes |
ASJC Scopus subject areas
- Biotechnology
- Environmental Science(all)
- Microbiology