Abstract
Due to the increase in fine dust caused by deepening air pollution, interest in the adverse effects of fine dust has increased. In this study, an experiment was conducted by applying a physical adsorption mechanism to the matrix to evaluate the properties of the microdust adsorption matrix. Density, absorption rate, fluidity, thermal conductivity, strength, and fine dust adsorption tests were conducted as test items for the evaluation of the physical properties of the matrix mixed with blast furnace slag-based powdered activated carbon. In this study, powdered activated carbon was used as a material for adsorbing fine dust. The results of the experiment for fabricating a fine dust adsorption matrix using powdered activated carbon are as follows. As the mixing ratio of powdered activated carbon increased, the density and absorption ratio tended to decrease and the absorption ratio increased. The flowability test showed a tendency to decrease as the mixing ratio of powdered activated carbon increased. As a result of the thermal conductivity test measurement, as the mixing ratio of powdered activated carbon increased, it decreased due to the increase of voids. As a result of the fine dust measurement, the higher the mixing ratio of powdered activated carbon was, the more the concentration tended to decrease due to the physical adsorption action. Compared to previous experiments using photocatalysts, it has been confirmed that overall performance such as strength has decreased, so a solution is needed.
Highlights
Regardless of the season, the smog phenomenon and fine dust are threatening our health, especially in the metropolitan area
Fine dust is a suspended solid in the air that refers to dust whose particles are so small that it is indistinguishable to the eye, and can be classified according to its diameter
Vapor adsorption has a lot of reversible physical adsorption, and liquid adsorption has a lot of irreversible chemical adsorption
Summary
Regardless of the season, the smog phenomenon and fine dust are threatening our health, especially in the metropolitan area. Fine dust is one of air pollutants, which is generated by industrial development, and is produced in various combustion, production, and manufacturing processes such as oil and cement manufacturing processes, waste incineration processes, and hazardous material processing processes. Dust less than 10μm is defined as fine dust (PM10), dust less than 2.5μm is defined as ultrafine dust (PM2.5). In 2015, the HEI Institute for Health Impact reported that Korea's ultra-fine dust concentration was the second highest among OECD countries[3]. Due to these problems, social interest in indoor air pollution is increasing. The characteristics of adsorptive cured product substituted with photocatalyst carbon were evaluated[4,5,6]. [Figure 1, Figure 2] show pictures of fine dust and the causes of the occurrence of fine dust
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