Evaluation of Three Common Green Building Materials for Ozone Removal, and Primary and Secondary Emissions of Aldehydes

Abstract

Ozone reactions that occur on material surfaces can lead to elevated concentrations of oxidized products in the occupied space of buildings. However, there is little information on the impact of materials at full scale, especially for green building materials. Experiments were completed in a 68m3 climate-controlled test chamber with three certified green building materials that can cover large areas in buildings: (1) recycled carpet, (2) perlite-based ceiling tile and (3) low-VOC paint and primer on recycled drywall. Ozone deposition velocity and primary and secondary emission rates of C1 to C10 saturated carbonyls were determined for two chamber mixing conditions and three values of relative humidity. A direct comparison was made between ozone deposition velocities and carbonyl yields observed for the same materials analyzed in small (10L) chambers. Total primary carbonyl emission rates from carpet, ceiling tile and painted drywall ranged from 27 to 120μgm-2h-1, 13to40μgm-2h-1, 3.9 to 42μgm-2h-1, respectively. Ozone deposition velocity to these three materials averaged 6.1mh-1, 2.3mh-1 and 0.32mh-1, respectively. Total secondary carbonyl emissions from these materials ranged from 70 to 276μgm-2h-1, 0 to 12μgm-2h-1, and 0 to 30μgm-2h-1, respectively. Carbonyl emissions were determined with a transient approximation, and were found to be in general agreement with those found in the literature. These results suggest that care should be taken when selecting green building materials due to potentially large differences in primary and secondary emissions. © 2013 Elsevier Ltd.

Department(s)

Civil, Architectural and Environmental Engineering

Comments

National Science Foundation, Grant DGE-0549428

Keywords and Phrases

Building materials; Deposition velocity; Emissions; Ozone; Surface chemistry

International Standard Serial Number (ISSN)

1873-2844; 1352-2310

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2024 Elsevier, All rights reserved.

Publication Date

01 Oct 2013

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