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Issue
Korean Chemical Engineering Research,
Vol.42, No.4, 433-438, 2004
수용액상 케톤계 유기화합물의 투과증발: Silicalite-1 제올라이트 분리막
Pervaporation of Ketone Organic Compounds from Their Aqueous Solution: Silicalite-1 Zeolite Membrane
안효성, 오윤진, 이혜련, 이용택
본 연구에서는 silicalite-1 분리막을 이용한 투과증발 막분리 공정을 이용하여 케톤계 휘발성 유기화합물인 아세톤과 MEK(methyl ethyl ketone)를 분리하고자 하였다. 공급되는 수용액 상 아세톤의 공급 농도가 0.8 wt%에서 20 wt%, MEK의 공급 농도가 1 wt%에서 15 wt%로 증가함에 따라 아세톤의 투과플럭스는 110 g/m2·h에서 480 g/m2·h, MEK의 투과플럭스는 30 g/m2·h에서 80 g/m2·h로 증가하였으며, 아세톤의 선택도는 140에서 40으로, MEK의 선택도는 85에서 10으로 감소하는 것을 관찰할 수 있었다. 아세톤의 투과 플럭스는 MEK의 투과 플럭스보다 동일한 농도에서 4-6배, 아세톤의 선택도는 MEK의 선택도보다 2-4배 크게 나타남을 알 수 있었다.
Volatile organic compounds of ketone are separated by pervaporation using a silicalite-1 zeolite membrane. As a feed concentration of acetone increased from 0.8 wt% to 20 wt% and a feed concentration of MEK (methyl ethyl ketone) increased from 1 wt% to 15 wt%, the permeation flux of acetone increased from 110 to 480 g/m2 · h and the MEK permeation flux also increased from 30 to 80 g/m2 · h. As a feed concentration of acetone and MEK (methyl ethyl ketone) increased in the same concentration range, a selectivity of acetone decreased from 140 to 40 and a selectivity of MEK decreased from 85 to 10. It was found that the permeation flux of acetone was 4-6 times higher than that of MEK and the selectivity was 2-4 times higher than that of MEK at a same feed concentration.
Keywords: Zeolite Membrane; Silicalite-1; Ketone; Pervaporation
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