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활성탄 및 고분자 흡착제에서 MEK의 흡·탈착 특성
Adsorption and Desorption Characteristics of MEK with Activated Carbon and Polymer Adsorbents
HWAHAK KONGHAK, February 1999, 37(1), 120-125(6), NONE
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Abstract
공장에서 대기 중으로 방출되고 있는 폐유기용매 중의 하나인 MEK(Methyl Ethyl Ketone)를 흡착법으로 회수하기 위하여 가장 적합한 흡착제를 선정하였다. 입상활성탄, 섬유상활성탄 및 고분자 흡착제를 사용하여 흡착량과 탈착량을 비교 검토하였다. 흡착제를 흡착탑에 충진하고 시료가스를 흘리면서 출구에서의 MEK농도를 분석한 파과실험을 통하여 흡착량을 측정하였다. 입상활성탄 및 섬유상활성탄은 초기의 MEK흡착량이 많은 반면에 상온에서 재생 후에는 흡착량이 감소하였다. 반면에 고분자 흡착제는 초기의 흡착량도 매우 높았으며 상온에서 재생 후의 흡착량도 초기흡착량과 비슷하였다. 진공 탈착을 하면서 MEK의 회수율을 측정한 결과를 살펴보면, 활성탄에 비해서 고분자 흡착제가 높은 회수율을 나타내었다.
A reliable adsorbent for MEK (Methyl Ethyl Ketone) was selected to recover it from the ducts of plant, which can solve related environmental problems. Granular activated carbon, activated carbon fiber, and polymer adsorbents were tested with the adsorption and desorption amounts of MEK The adsorbents were loaded into the column and break-through experiments were performed by analyzing the outlet gas from the column by a gas chromatography. Granular activated carbon and activated carbon fiber had high adsorption amounts at first adsorption. After regeneration of the adsorbents at room temperature under vacuum the adsorption amounts decreased. Polymer adsorbents had high adsorption amount at first adsorption and the second adsorption amount was almost equal to the first one after regeneration. During the regeneration MEK was collected with a liquid nitrogen trap. Polymer adsorbents had higher recovery than the activated carbons.
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