Liquid–Liquid Equilibrium of Water + 2-Methoxyphenol + Methyl Isobutyl Ketone and Water + 1,2-Benzenediol + Methyl Isobutyl Ketone at 303.15 K and 328.15 K,Journal of Chemical & Engineering Data

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Liquid–Liquid Equilibrium of Water + 2-Methoxyphenol + Methyl Isobutyl Ketone and Water + 1,2-Benzenediol + Methyl Isobutyl Ketone at 303.15 K and 328.15 K
Journal of Chemical & Engineering Data ( IF 2.0 ) Pub Date : 2018-02-26 00:00:00 , DOI: 10.1021/acs.jced.7b00887
Nikolaos Montesantos ₁ , Matteo Chirullo ₁ , Marco Maschietti ₁

Affiliation

Liquid–liquid equilibrium (LLE) experiments for the systems water + 2-methoxyphenol + MIBK and water + 1,2-benzenediol + MIBK were carried out at 303.15 and 328.15 K according to a procedure allowing the measurement of both the composition of the phases in equilibrium and their relative amounts. Binary LLE data of subsystems water + MIBK and water + 2-methoxyphenol were also measured, as was the solubility of 1,2-benzenediol in water. The experimental data were modeled using the NRTL activity coefficient model, with optimal energy parameters calculated from the experimental data. The NRTL model proved to be adequate in describing the LLE phase behavior of the systems investigated, and it can be used for the process design of liquid–liquid extraction of these aromatic solutes from aqueous phases. MIBK proved to be an efficient extractant for 2-methoxyphenol and 1,2-benzenediol, even though the distribution factors for 2-methoxyphenol are 4–5 times higher than those for 1,2-benzenediol. The results are relevant to the design of extraction processes aimed at recovering phenols from wastewater or aqueous phases produced in the hydrothermal conversion of biomass, such as in the case of the conversion of lignin, which is a byproduct of pulp mills and lignocellulosic bioethanol plants.

中文翻译：

303.15 K和328.15 K时水+ 2-甲氧基苯酚+甲基异丁基酮和水+ 1,2-苯二醇+甲基异丁基酮的液-液平衡

根据303.15和328.15 K的程序，对水+ 2-甲氧基苯酚+ MIBK和水+ 1,2-苯二醇+ MIBK进行了液-液平衡（LLE）实验，可以测量两相的组成处于平衡状态及其相对数量。还测量了子系统水+ MIBK和水+ 2-甲氧基苯酚的二元LLE数据，以及1,2-苯二醇在水中的溶解度。使用NRTL活度系数模型对实验数据进行建模，并根据实验数据计算出最佳能量参数。NRTL模型被证明足以描述所研究系统的LLE相行为，并且可以用于从水相中液-液萃取这些芳族溶质的工艺设计。MIBK被证明是2-甲氧基苯酚和1,2-苯二醇的有效萃取剂，即使2-甲氧基苯酚的分布系数比1,2-苯二醇的分布系数高4-5倍。该结果与旨在从废水或生物质水热转化产生的水相中回收酚的提取工艺设计有关，例如在木质素转化的情况下，木质素是制浆厂和木质纤维素生物乙醇工厂的副产品。

更新日期：2018-02-27

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