Understanding Ozone Transport and Deposition within Indoor Surface Boundary Layers

Gen Pei, Yuan Xuan, Glenn Morrison, Donghyun Rim

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Ozone-initiated oxidation reactions on indoor surfaces meaningfully alter the chemical composition of indoor air and human exposure to air toxins. Ozone mass transport within the indoor surface boundary layer plays a key role in ozone-surface reaction kinetics. However, limited information is available on detailed ozone transport dynamics near realistic, irregular indoor surfaces. This paper presents a research framework to study the underlying mechanisms of ozone reactions with realistic indoor surfaces based on microscope scanning of surface material and detailed Computational Fluid Dynamics (CFD) simulation. The study results show that indoor surface topography can meaningfully affect ozone mass transport within a surface boundary layer, thereby modulating near-surface ozone concentration gradient and surface uptake. The results also reveal that the effective indoor surface area available for ozone reaction varies with indoor air speed and turbulent air mixing within the boundary layer. The detailed dynamic behaviors of ozone reactions with realistic indoor surfaces provide insights into the implications of pollutant-surface interactions on indoor chemistry and air quality.

Original languageEnglish (US)
Pages (from-to)7820-7829
Number of pages10
JournalEnvironmental Science and Technology
Volume56
Issue number12
DOIs
StatePublished - Jun 21 2022

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • Environmental Chemistry

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