Experimental result and data correlation of liquid-liquid equilibrium for methyl isopropyl ketone + o, m, p-dihydroxybenzene + water at 333.15 K, 343.15 K and 353.15 K

Experiments and COSMO-SAC Modeling of Methyl Isobutyl Ketone + Dimethylphenols + Water Mixtures

“…The apparatuses used in the experiment were 100 mL glass balance kettle, constant temperature water bath, magnetic stirring apparatus, and electronic scales. A 100 mL volumetric glass balance vessel was used to perform LLE experiments . First of all, quantified MIBK, dimethylphenol, and double-distilled water were separately put into balance container and then the equilibrium vessel was mixed for 2 h thoroughly with a magnetic stirrer.…”

“…Solvent extraction is a common chemical technique for the removal and recovery of phenols, and this method achieves good results. − At the same time, liquid–liquid extraction has many advantages such as ease of running automatically, large throughput, low operating cost, and high extraction efficiency. − Although there are some alcohols or ester solvents used to extract phenols, they have some deficiencies, such as high solubility in water, strong volatility, low extracting efficiency, and so on. Methyl isobutyl ketone (MIBK) is a very promising extractant that can effectively avoid these shortcomings. − Thus, adopting MIBK as a solvent to extract dimethylphenols from aqueous solution would be a nice way.…”

“…16−19 At the same time, liquid−liquid extraction has many advantages such as ease of running automatically, large throughput, low operating cost, and high extraction efficiency. 20−22 Although there are some alcohols or ester solvents used to extract phenols, 23 they have some deficiencies, such as high solubility in water, strong volatility, low extracting efficiency, and so on. Methyl isobutyl ketone (MIBK) is a very promising extractant that can effectively avoid these shortcomings.…”

Experimental Measurement and Thermodynamic Model of Liquid–Liquid Equilibrium for the Ternary System of 1-Dodecanol–Phenol–Water

“…The equilibrium experiments for 1-dodecanol–phenol–water ternary systems were carried out at 298.15–343.15 K under atmospheric pressure in a self-designed equilibrium vessel shown in previously published papers. , The separately quantified deionized water, 1-dodecanol, and phenol were fed into the equilibrium vessel, and they were agitated drastically with a magnetic stirrer for 2 h to obtain a homogeneous mixture. Then, the ternary mixture was put into a constant temperature thermostatic bath with an accuracy of ±0.1 K for 22 h. When phase equilibrium was reached, samples of both phases were drawn using syringes and weighed on an electronic balance (SHIMADZU, AUW220D) with an accuracy of 0.1 mg.…”

“…However, as far as we know, the LLE ternary data for 1-dodecanol, phenol, and water does not exist in the literature. Generally, most LLE data on solvent–phenol–water focuses on the range from 298.15 K (a temperature under standard conditions) to 323.15 K. However, the operating temperature for extracting phenolic compounds from industrial wastewater, especially in the coal-chemical industry, is usually set above 333 K in order to greatly reduce the pipeline clogging problems from paraffin (melting point 328.15–335.15 K) in the phenol recovery unit. , For example, industrial applications for treating phenolic effluent with methyl isobutyl ketone (MIBK) as solvent have been implemented in some plants or companies, such as China Harbin Coal-chemicals Inc., , Erdos Coal-Chemicals Inc., and Xinjiang Guanghui Coal Clean Refining & Chemical Co., Ltd.…”