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Journal of Applied Sciences
Year: 2014  |  Volume: 14  |  Issue: 10  |  Page No.: 1008 - 1015

An Optimization Study via Response Surface Methodology in Extracting of Benzothiophene and Xylene from n-C12 using 1-Hexyl-3-Methylimidazolium Tetrafluoroborate Ionic Liquid

Syamsul B. Abdullah, Z. Man and M.A. Bustam    

Abstract: The extraction of benzothiophene and xylene from n-dodecane with 1-hexyl-3-methylimidazolium tetrafluoroborate ([hmim][BF4]) ionic liquid (IL) was investigated. The influence of mass ratio of oil to IL, extracting time and operating temperature were studied for an optimized condition of the benzothiophene (BT) and xylene removal. The optimization process was analyzed using Central Composite Face-Centered Experimental Design by Design Expert Version 6.0.6 (Stat-Ease, USA). The satisfactory optimum mild conditions obtained were at a mass ratio (IL/oil) of 0.73 with extracting time of 10 min at operating temperature of 60°C. The adequacy of the model equation for predicting the optimum response values was validated using experimental data.

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