금속산화물 첨착에 의한 개질 화산재를 적용한 기능성 건축자재의 오염물질 흡착성능 평가에 관한 연구

Abstract

In this study, surface modification technology has been developed in order to improve toluene removal performance of volcanic ash which is used as an adsorptive building material. Furthermore, the performance of building materials with the addition of modified volcanic ash will be evaluated; and in turn, it will be used as fundamental information for the improvement of performance on functional building materials. In order to eliminate the toluene in the air, copper nitrate salts was impregnated on the surface of volcanic ash by one to two percent of its mass. To confirm its toluene adsorption performance, the modified volcanic ash was added for the purpose of Spray-painting composition production; and in turn, the performance evaluation on toluene adsorption was carried out. In the case of Toluene removal rate, all samples impregnated copper nitrate salts by 1 wt percent and 2 wt percent showed the rate equal to or higher than 90 percent. Spray-painting composition added by modified volcanic ash showed the adsorption rate of 67 percent on the first day and 60 percent on day 7. Spray-painting composition added by modified volcanic ash showed higher toluene adsorption performance than the one with natural volcanic ash. Therefore, in order to enhance the performance of indoor contaminants removal by functional building materials, various materials should be developed.