Ozone III - Application of Boron-Doped Diamond Electrodes for Inactivation of Microbial Contaminants in Different Water Matrices
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2016-01-01 |
| Authors | Carolin Heim, M. Rajab, Thomas Letzel, Jƶrg E. Drewes, Brigitte Helmreich |
Abstract
Section titled āAbstractāPrevention of microbial contamination is of major concern in the food and beverage industry in order to
ensure food safety and high product quality. Prior research revealed that boron-doped diamond (BDD)
electrodes can be established as an adequate disinfection technology. In aqueous solutions, these electrodes
generate ozone and other reactive oxidants, which can subsequently serve as disinfectants. The study
describes inactivation of typical faecal indicator organisms, Escherichia coli and Enterococcus faecium, using
a BDD electrode using a batch reactor configuration. Residual ozone concentrations were determined during
the oxidation reaction. Both bacteria strains could be inactivated with high efficiency. Through application of
varying current densities, it was possible to modulate the disinfection process, which strongly depended on
the amount of charge delivered to the system. Electrolysis occurring in wastewater matrices instead of
drinking water seems to produce disinfecting agents other than ozone.
Tech Support
Section titled āTech SupportāOriginal Source
Section titled āOriginal Sourceā- DOI: None