(Liquid + liquid) extraction of phenols from aqueous solutions with cineole. (April 2017)

• Record Type: Journal Article
• Authors: Li, Hengde; Wan, Li; Chu, Guoqiang; Tan, Wei; Liu, Baoyu; Qin, Yanlin; Feng, Yuqing; Sun, Dalei; Fang, Yanxiong
• Is Part Of: Journal of chemical thermodynamics. Volume 107(2017)
• Page Start: 95
• Page End: 103
• Publication Date: 2017-04
• Subjects: Phenols -- Cineole (1, 8-cineole) -- LLE -- Phenolic wastewater -- Extraction property; Thermodynamics -- Periodicals; Thermochemistry -- Periodicals; Thermodynamique -- Périodiques; Thermochimie -- Périodiques; Thermochemistry; Thermodynamics; Periodicals; 541.369
• DOI: 10.1016/j.jct.2016.12.018
• Languages: English
• ISSNs: 0021-9614

Abstract

Graphical abstract: (Liquid + liquid) equilibrium tie-lines for the (water + phenol or p-cresol + cineole) system are presented. Distribution ratios of phenol and p-cresol in the mixtures are compared. Influence of temperature on the extraction property is examined. Highlights: (Liquid + liquid) extraction data of phenols with cineole are presented. Influence of temperature on the extraction property is examined. LLE data were well correlated using the NRTL and UNIQUAC models. Abstract: As an eco-friendly compound and good solvent, cineole (1, 8-cineole, eucalyptol) has been evaluated for the extraction property of phenols (phenol or p-cresol) from aqueous solutions. This paper presents experimental (liquid + liquid) equilibrium (LLE) data for the ternary (water + phenol + cineole) and (water + p-cresol + cineole) mixtures from high concentration to low concentration of phenols-water solution. The mutual solubility of the binary (water + cineole) and (water + phenol or p-cresol) systems, and the LLE results for the ternary systems were determined with a tie-line method at T = (283.15, 298.15, and 313.15) K under atmospheric pressure. The experiment LLE results showed that cineole as a good extractant exhibited high extraction ability for phenol or p-cresol from aqueous solutions. The influence of temperature on the (liquid + liquid) phase equilibria was studied. The well-known Hand and Bachman equations were used to test the reliability of the experimental values. Moreover, the experimental LLE results were satisfactorily correlated by the NRTL and UNIQUAC models.