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톨루엔-노말헵탄 혼합물의 액막분리에 있어서 추출용제의 영향
Effect of Extractive Solvents on Separability of Toluene-n-Heptane Mixture by Liquid Membrane
HWAHAK KONGHAK, December 1999, 37(6), 877-881(5), NONE
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Abstract
톨루엔과 노말헵탄 혼합물을 액막에 의하여 분리함에 있어서 분리기능을 향상시키기 위하여 설포레인, 메틸 설폰, 트리에틸렌 글리콜과 같은 추출용제를 첨가하였다. 추출용제의 종류와 농도 그리고 접촉시간이 분리계수와 투과율에 미치는 영향을 분석하였다. 추출용제의 농도가 증가함에 따라 톨루엔과 노말헵탄의 투과율이 증가하였다. 설포레인을 첨가했을 경우에 10 부피%와 접촉시간 10분에서 첨가하지 않은 경우보다 높은 분리계수를 나타내었다. 소디움 로릴 설페이트 0.5 무게%에서 가장 낮은 막 파괴율을 나타내었으며 또한 가장 높은 분리계수를 얻을 수 있었다.
In the separation of toluene-n-heptane mixture by liquid membrane, extractive solvents such as sulfolane, methyl sulfone and triethylene glycol were intermixed with membrane to improve the separability. Detailed analysis was carried out concerning the effects of such factors as the type and the concentration of extraction solvents and the contact time on the permeability and separation factor. As the extractive solvent concentration increased, the permeation of toluene and n-heptane increased. With 10 vol% of sulfolane a higher separation factor than with no sulfolane was achicved at the contact time of 10 minutes. The percentage of membrane breakup was smallest when the concentration of sodium lauryl sulfate was 0.5 wt% where the separation factor reached its highest value.
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