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Temperature and Salt Effects on the Liquid–Liquid Equilibrium of the Water + Cyclopentanone + (Propan-2-yl) Benzene System
Journal of Chemical & Engineering Data ( IF 2.0 ) Pub Date : 2020-10-16 , DOI: 10.1021/acs.jced.0c00622 Javad Saien 1 , Farnaz Jafari 1 , Aliasghar Salehi 1 , Mahdieh Razi Asrami 1
Journal of Chemical & Engineering Data ( IF 2.0 ) Pub Date : 2020-10-16 , DOI: 10.1021/acs.jced.0c00622 Javad Saien 1 , Farnaz Jafari 1 , Aliasghar Salehi 1 , Mahdieh Razi Asrami 1
Affiliation
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The separation of cyclopentanone from aqueous solutions with recommended (propan-2-yl) benzene (cumene) solvent was investigated at different temperatures of 293.2, 298.2, and 308.2 K and with the effect of NaCl, Na2SO4, and MgSO4 salts. In a wide mass fraction range of cyclopentanone, the solute distribution coefficients and separation factors were within (1.554–5.992) and (75.85–1944.97), respectively. The high separation factors corresponded to low solute concentrations and low temperatures. The effect of salts was investigated, and enhancements in the separation factor were achieved up to 24.7, 39.9, and 49.3% with 0.01 mass fraction of, respectively, NaCl, Na2SO4, and MgSO4 in an aqueous phase. This order of salt effectiveness is consistent with the Gibbs free energy for the hydration of the constituent ions. The consistency of LLE data for the employed system, with and without salts, was ascertained with corresponding equations. For the modeling of obtained data, the well-known activity coefficient models of NRTL and UNIQUAC were used, and binary interaction parameters were determined. High accuracy of the models was revealed with root-mean-square deviations of less than 0.0053 and 0.0069, respectively.
中文翻译：
温度和盐对水+环戊酮+（丙-2-基）苯系统的液-液相平衡的影响
在293.2、298.2和308.2 K的不同温度下，在NaCl，Na 2 SO 4和MgSO 4盐的影响下，研究了使用推荐的（丙-2-基）苯（枯烯）溶剂从水溶液中分离环戊酮的方法。。在较宽的环戊酮质量分数范围内，溶质分布系数和分离因子分别在（1.554–5.992）和（75.85–1944.97）之内。高分离因子对应于低溶质浓度和低温。研究了盐的影响，分别以0.01质量分数的NaCl，Na 2 SO 4和MgSO 4达到了24.7％，39.9％和49.3％的分离系数的提高。在水相中。盐的有效性顺序与构成离子水合的吉布斯自由能一致。通过相应的方程式确定了所用系统（含盐和不含盐）的LLE数据的一致性。为了对获得的数据进行建模，使用了著名的NRTL和UNIQUAC活度系数模型，并确定了二元相互作用参数。揭示了模型的高精度，均方根偏差分别小于0.0053和0.0069。
更新日期：2020-11-12
中文翻译：
温度和盐对水+环戊酮+（丙-2-基）苯系统的液-液相平衡的影响
在293.2、298.2和308.2 K的不同温度下，在NaCl，Na 2 SO 4和MgSO 4盐的影响下，研究了使用推荐的（丙-2-基）苯（枯烯）溶剂从水溶液中分离环戊酮的方法。。在较宽的环戊酮质量分数范围内，溶质分布系数和分离因子分别在（1.554–5.992）和（75.85–1944.97）之内。高分离因子对应于低溶质浓度和低温。研究了盐的影响，分别以0.01质量分数的NaCl，Na 2 SO 4和MgSO 4达到了24.7％，39.9％和49.3％的分离系数的提高。在水相中。盐的有效性顺序与构成离子水合的吉布斯自由能一致。通过相应的方程式确定了所用系统（含盐和不含盐）的LLE数据的一致性。为了对获得的数据进行建模，使用了著名的NRTL和UNIQUAC活度系数模型，并确定了二元相互作用参数。揭示了模型的高精度，均方根偏差分别小于0.0053和0.0069。
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