Essential oil terpenless by extraction using organic solvents or ionic liquids
Essential oil terpenless by extraction using organic solvents or ionic liquids
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DOI：
10.1002/aic.10844
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发表时间：
2006-06
期刊：
影响因子：
3.7
通讯作者：
A. Arce;A. Marchiaro;O. Rodríguez;A. Soto
中科院分区：
文献类型：
--
作者：
A. Arce;A. Marchiaro;O. Rodríguez;A. Soto
离子液体作为传统有机溶剂的潜在替代品在许多不同的应用中，特别是作为反应介质和分离剂，正受到人们的关注。寻找一种有效的精油脱萜方法是必要的。有机溶剂是挥发性物质，其导致环境污染，并且由于蒸发损失而导致重要的操作成本。因此，使用绿色溶剂将避免这些困难。本文研究了两种有机溶剂和一种离子液体对柑桔精油脱酚的可能性，并对所得结果进行了比较。柑橘精油模拟柠檬烯和芳樟醇的混合物;研究的溶剂是2-丁烯-1，4-二醇，乙二醇，和1-乙基-3-甲基咪唑甲磺酸盐离子液体;和LLE数据的三个三元系统的报告。用NRTL方程进行数据关联。溶剂的选择进行了研究，通过溶质分配比和选择性，并从文献中的其他溶剂进行比较。离子液体的选择性最高，但与其他有机溶剂接近，溶质分配比的结果取决于萃取浓度范围。使用这些溶剂进行提取过程模拟，并显示结果以供比较。尽管离子液体没有得到最高的芳樟醇回收率，但它提供了最高的纯度。© 2006美国化学工程师学会AIChE J，2006
Ionic liquids are gaining attention as potential substitutes for classic organic solvents in many different applications, especially as reaction media and separation agents. Search for an effective method for essential oils terpenless is necessary. Organic solvents are volatile substances, which contribute to environmental pollution and lead to important operating costs due to losses by evaporation. Thus, use of a green-solvent would avoid those difficulties. In this work, the possibility of using two organic solvents and an ionic liquid to carry out the citrus essential oil deterpenation is studied and the obtained results are compared. Citrus essential oil is simulated as a mixture of limonene and linalool; the solvents studied are 2-butene-1,4-diol, ethylene glycol, and the 1-ethyl-3-methylimidazolium methanesulfonate ionic liquid; and LLE data for the three ternary systems are reported. Data correlation is done by means of the NRTL equation. Solvent selection is studied by means of the solute distribution ratio and the selectivity, and compared to other solvents from the literature. The ionic liquid presents the highest selectivity, but close to other organic solvents, and results for solute distribution ratio depend on concentration range of extraction. Extraction process simulations using these solvents are carried out and the results are shown for comparison. Despite the fact that the ionic liquid does not get the highest linalool recovery, it provides the highest purity. © 2006 American Institute of Chemical Engineers AIChE J, 2006