Bacteria Removal And Viability Attenuation In A Ventilation Duct By Means
Of An Electrostatic Barrier
Author(s)
L. Bontempi, M. Dottori, G. Fava & M.L. Ruello
Abstract
Bacteria removal and viability attenuation in a
ventilation duct by means of an electrostatic
barrier
L. ~ontem~i', M. ~ o t t o r i ~ , G. ~ a v a ~ & M. L. ~ u e l l o ~
I Tecnica Bontempi s.n.c. Calvisano (BS), Italy.
2~epartment of Materials and Environmental Engineering and Physics,
Murche Polytechnical University, Italy.
Abstract
The aim of this research is focused on dust and bacteria removal evaluation from
a ductwork of a central heating and air-conditioning system by means of a
commercial electronic air cleaner. Bacteria removal and microrganisms viability
are measured under steady flow conditions following two different sarnplinganalysis
strategies. The first is based on a surface air system (SAS) sampler
using a general plate count agar (PCA) medium; the second uses fluorescent
stains to distinguish and count viable and non viable cells by means of
epifluorescence microscopy. Inserting the electrostatic barrier, an informative
bacterial removal obtained averaging the overall result
Keywords
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