Air ionization as a control technology for off-gas emissions of volatile organic compounds

作者:Kim Ki Hyun; Szulejko Jan E; Kumar Pawan; Kwon Eilhann E; Adelodun Adedeji A; Reddy Police Anil Kumar
来源:Environmental Pollution, 2017, 225: 729-743.
DOI:10.1016/j.envpol.2017.03.026

摘要

High energy electron-impact ionizers have found applications mainly in industry to reduce off-gas emissions from waste gas streams at low cost and high efficiency because of their ability to oxidize many airborne organic pollutants (e.g., volatile organic compounds (VOCs)) to CO2 and H2O. Applications of air ionizers in indoor air quality management are limited due to poor removal efficiency and production of noxious side products, e.g., ozone (O-3). In this paper, we provide a critical evaluation of the pollutant removal performance of air ionizing system through comprehensive review of the literature. In particular, we focus on removal of VOCs and odorants. We also discuss the generation of unwanted air ionization byproducts such as O-3, NOx, and VOC oxidation intermediates that limit the use of air-ionizers in indoor air quality management.

  • 出版日期2017-6