Laboratory Measurement of Secondary Pollutant Yields from Ozone Reaction with HVAC Filters

Publication Type

Conference Proceedings

Date Published

09/2009

LBNL Report Number

LBNL-5034E

Abstract

We used Proton Transfer Reaction – Mass Spectrometry (PTR-MS) and conventional sampling methods to monitor and identify trace level organic pollutants formed in heterogeneous reactions between ozone and HVAC filters in real time. Experiments were carried out using a bench-scale flow tube reactor operating with dry air and humidified air (50% RH), at realistically high ozone concentrations (150 ppbv). We explored different filter media (i.e., fiberglass and cotton/polyester blends) and different particle loadings (i.e., clean filter and filters loaded with particles for 3 months at the Lawrence Berkeley National Laboratory and the Port of Oakland, CA). Detailed emission dynamics of very low levels of certain organic pollutants from filter media upon ozone exposure in the presence of moisture have been obtained and analyzed.

Conference Name

Proceedings of the Healthy Buildings 2009 Conference

Year of Publication

2009

Conference Location

Syracuse, NY