Electrochemical disinfection of drinking water using an activated-carbon-fiber reactor capable of monitoring its microbial fouling

M. Okochi, T. K. Lim, N. Nakamura, Tadashi Matsunaga

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An electrochemical reactor employing activated carbon fibers (ACF) was constructed for the disinfection of bacteria in drinking water. The application of an alternating potential of 1.0 V and -0.8 V versus a saturated calomel electrode, for disinfecting and desorbing bacteria, enabled reactor operation for 840 h. Drinking water was passed through the reactor in stop/flow mode: 300 ml/min flow for 12 h and no flow for 12 h, alternately. The bacterial cell density in treated water was always been less than 20 cells/ml. It was also found that the formation of biofilm on the ACF reactor caused an increase in current, enabling the self-detection of microbial fouling.

Original languageEnglish
Pages (from-to)18-22
Number of pages5
JournalApplied Microbiology and Biotechnology
Issue number1
Publication statusPublished - 1997
Externally publishedYes


ASJC Scopus subject areas

  • Biotechnology
  • Microbiology
  • Bioengineering

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