Study on the Removal of Carbon Dioxide in Passenger Cabin using Base-Modified Zeolites

염기 처리 제올라이트를 이용한 객실용 이산화탄소 저감방안 연구

Carbon dioxide concentration of railroad passenger cabin is obliged to be kept lower than guideline values of 'Indoor air quality guideline for public transportations', but actual carbon dioxide concentration frequently exceeds this guideline value. Ventilation is most desirable to lower carbon dioxide concentration but there are some cases when the ventilation is not applicable. In this study, carbon dioxide concentration control method using adsorbents was presented. Base and zeolites, good adsorbents of carbon dioxide, were mixed and palletized. Carbon dioxide adsorption performance of this adsorbents were studied. It was found that base-modified zeolites adsorbed carbon dioxide better than zeolites only.