Abstract
Electrochemical oxidation of Deinococcus geothermalis bacteria was studied in synthetic paper machine water. Three electrodes, boron-doped diamond, mixed metal oxide (MMO) and PbO2, were tested as anodes. The electrochemical behaviour of the electrodes was investigated by cyclic voltammetry and the amounts of bacteria were measured as aerobic plate counts. Inactivation of bacteria was effective (>95%) at relatively long contact times (>30 min) and high current densities (50 mA/cm2) with all electrodes. Increasing the current density enhanced inactivation of bacteria in the case of the MMO electrode. Electrochemically generated chlorine and hypochlorite were the main oxidants in killing bacteria.
Original language | English |
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Pages (from-to) | 95-99 |
Number of pages | 5 |
Journal | Journal of Pulp and Paper Science |
Volume | 33 |
Issue number | 2 |
Publication status | Published - Apr 2007 |
Externally published | Yes |
Keywords
- Bacteria
- Electric current
- Electrodes
- Microorganism control
- Oxidation
- White water
ASJC Scopus subject areas
- General Chemistry
- General Chemical Engineering
- General Materials Science
- Media Technology