Removal of Nitrogen Dioxide and Nitrogen Acids Using a Range Hood Filter. TopicalReport on Task 4, August 1986-October 1995

摘要

Indoor concentrations of No2 typically fluctuate considerably during a 24-hperiod, with peak periods being associated with usage of combustion sources. These sources can be either internal (fossil fuel appliances, fireplaces, smoking, etc.) or external (e.g. automobiles) to the indoor environment. A laboratory and field study, including a nine-month residential demonstration, has been conducted to evaluate the practical capability for controlling indoor NO2 levels using alkaline carbon filters in either a range hood or room air filtration system. Results show that 70-95 percent reduction in average indoor NO2 levels can be achieved by using these reactive filters in conjunction with commercially available range hoods and/or air filtration units.