液體膜에 의한 Benzene과 n-Hexane 混合物의 分離에 있어서 界面活性劑가 미치는 影響 = Effect of Surfactants on the Separation of Benzene-n-Hexane Mixture by Liquid Membrane

다국어 초록 (Multilingual Abstract)

In the separation of benzene-n-hexane mixture by emulsion liquid membrane in a batch system, the effect of surfactants on the separation factor and the percentage of membrane breakup were investigated over the surfactant concentration ranging from 0.1 to 1.5 wt% at the contact time of 5 and 10 mimutes and the settling time of 5 and 10 minutes. The surfactants used were sodium lauryl sulfate, sodium laurylether sulfate and triethanolamine lauryl sulfate. The separation factor reached its maximum value at the surfactant concentration of 0.5 wt% for all surfactants. In general sodium laurylether sulfate showed larger separation factor than the other two surfactants. The separation factor reached its maximum value at the contact time of 5 minutes for sodium lauryl sulfate and sodium laurylether sulfate and 10 minutes for triethanolamine lauryl sulfate. It was found that the percentage of membrane breakup reached its minmum values and the separation factor showed its maximum values at the surfactant concentration of 0.5 wt% for all three surfactants, which confirmed that efficient separation could be effected when emulsion liquid membranes were stable because of their low membrane breakup.