Comparisons of Adsorption-Desorption Characteristics of Major 10 Kinds Components Consisting of Gasoline Vapor
유증기를 구성하는 주요 10종류 성분의 온도에 따른 흡·탈착특성 비교

Song-Woo Lee, Young-Soo Na, Min-Gyu Lee
2014 Journal of Environmental Science International  
Adsorption and desorption characteristics of the representative 10 kinds components consisting of gasoline vapor on activated carbon were investigated at the temperature range of -30 25 . The breakthrough curves of each vapors obtained by the Thomas model were well described the breakthrough experimental results of this study. The breakthrough times of each vapors were correlated with the molecular weight, density, and vapor pressure. The breakthrough times had greater correlation with boiling
more » ... ation with boiling point than molecular weight and density. The slope of the breakthrough curve was a proportional relationship with the rate constant (k) of Thomas model expression. The higher the slope of the breakthrough curve, the rate constant was larger. The biggest slope vapor had the smallest adsorption capacity (qe). Adsorption and desorption characteristics of mixed vapor similar to the gasoline vapor were studied at room temperature (25 ). The mixed vapor consisting of 9 components; group A (pentane, hexene, hexane), group B (benzene, toluene), group C (octane, ethylbenzene, xylene, nonane) was examined. Group A was not nearly adsorbed because of substitution by group C, and the desorption capacity of group A was smaller than group C. The adsorbed substances were confirmed to be Group C. 1) 1. 서 론 휘발유(gasoline)는 여러 가지 parraffins, olefins, naphthenes, 그리고 aromatics 화합물이 혼합된 물질이 며, 그 구성성분은 원유의 산출지역과 정유조건에 따라 차이가 있기 때문에 정확한 구성성분의 종류와 양은 측 정하기 힘들다. 산업의 발전과 운송수단이 발달함에 따 라 자동차 사용량이 증가하고, 그에 따라 도심 내에 유 류저장장치 및 주유소의 수도 증가함으로써, 인구가 밀 집한 도심의 주유소에서 휘발성 유기화합물(volatile organic compounds, VOCs)을 포함하고 있는 유증기 (gasoline vapor)의 지속적인 방출은 심각한 대기 환경
doi:10.5322/jesi.2014.23.9.1593 fatcat:kreptl6lpfdghlnjts63tvtsya