Electrochemical disinfection of marine bacteria attached on a plastic electrode

Satoshi Nakasono; Noriyuki Nakamura; Koji Sode; Tadashi Matsunaga

doi:10.1016/0302-4598(92)87042-S

Electrochemical disinfection of marine bacteria attached on a plastic electrode

Satoshi Nakasono, Noriyuki Nakamura, Koji Sode, Tadashi Matsunaga

Research output: Contribution to journal › Article

22 Citations (Scopus)

Abstract

A plastic electrode, which consisted of graphite and silicone rubber, was employed for the electrochemical disinfection of attached marine bacteria. Vibrio alginolyticus. The viability of the bacteria attached on the electrode depended on the applied potential and time. Marine bacteria attached on a basal plane pyrolytic graphite electrode could be disinfected at potentials above 0.8 V vs. a saturated calomel electrode (SCE) applied for 20 min. The bacteria attached on a graphite-silicone electrode were disinfected at 1.0 V vs. SCE and 1.5V vs. SCE, and 5.6 × 10³ cells/cm² of attached bacteria were disinfected to less than 5% of the initial number at times above 10 min. The residual chlorine concentration was less than the regulated value (0.02 ppm) and the pH value did not change after a potential of 1.5 V vs. SCE was applied to the graphite-silicone electrode for 30 min.

Original language	English
Pages (from-to)	191-198
Number of pages	8
Journal	Bioelectrochemistry and Bioenergetics
Volume	27
Issue number	2
DOIs	https://doi.org/10.1016/0302-4598(92)87042-S
Publication status	Published - 1992
Externally published	Yes

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ASJC Scopus subject areas

Biochemistry

Cite this

Nakasono, S., Nakamura, N., Sode, K., & Matsunaga, T. (1992). Electrochemical disinfection of marine bacteria attached on a plastic electrode. Bioelectrochemistry and Bioenergetics, 27(2), 191-198. https://doi.org/10.1016/0302-4598(92)87042-S

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AB - A plastic electrode, which consisted of graphite and silicone rubber, was employed for the electrochemical disinfection of attached marine bacteria. Vibrio alginolyticus. The viability of the bacteria attached on the electrode depended on the applied potential and time. Marine bacteria attached on a basal plane pyrolytic graphite electrode could be disinfected at potentials above 0.8 V vs. a saturated calomel electrode (SCE) applied for 20 min. The bacteria attached on a graphite-silicone electrode were disinfected at 1.0 V vs. SCE and 1.5V vs. SCE, and 5.6 × 103 cells/cm2 of attached bacteria were disinfected to less than 5% of the initial number at times above 10 min. The residual chlorine concentration was less than the regulated value (0.02 ppm) and the pH value did not change after a potential of 1.5 V vs. SCE was applied to the graphite-silicone electrode for 30 min.

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10.1016/0302-4598(92)87042-S