Author： Menetrez M. Y.
Publisher： Taylor & Francis Ltd
ISSN： 0191-9512
Source： Ozone: Science and Engineering, Vol.31, Iss.4, 2009-07, pp. : 316-325
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Abstract
This project evaluated the effects of exposing a variety of microorganisms on porous and non-porous materials to elevated gaseous ozone concentrations ranging from 100 - 1000 ppm. Gypsum wallboard (porous) and glass slide (non-porous) building materials were used. Two fungi organisms, two bacteria organisms and two levels of relative humidity (RH) were tested. Increased humidity and non-porous surface exposure were found to increase the biocidal capability of high levels of ozone. The results of this study indicate that even at relatively high concentrations of ozone, it is difficult to get significant reductions of microorganisms on surfaces, especially on porous materials.
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