Takayuki Tokairin

Numerical Study on Reduction of Ambient NOx, PM, and VOCs Concentrations by ACF (Activated Carbon Fiber) Fences: Effects of Generated Air Flow and Chemical Reactivity of the ACF Fences

A method to use fences of activated carbon fiber (ACF) is presented to reduce high NO2, PM, and VOCs concentrations in urban atmosphere without excess energy use. Polluted air in road space moves with natural and car-induced winds to contact with and to flow through ACF fences, and the ACF layer removes these pollutants. That this “energy-free” equipment can reduce high NOx by 15–50 % at the roadside is numerically evaluated.

Poster 7 Wind-driven NOx removal by flow-through fences with ACF (Activated Carbon Fiber): Evaluation of the fence's efficiency in reduction of ambient NOx

Abstract Because of heavy traffic in urban area in Japanese mega cities, air pollution by NO 2 , SPM, etc., is still severe in near-major-roads’ environment. In this study, we propose to use the activated carbon fiber (ACF) in flow-through fence set at roadside as an energy-free NO x remover. Efficiency of NO x removal by the flow-through fences was numerically investigated, when a NO x -rich air mass driven by natural wind passes through the fence.