Liquid extraction of polyhydric alcohols from water using [A336][SCN] as a solvent |
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| Institution: | 1. School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, PR China;2. Beijing Key Laboratory of Membrane Science and Technology & College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China;1. Institute of Chemistry of the Romanian Academy, 24 Mihai Viteazu Bvd., 300223 Timisoara, Romania;2. University of Bucharest, Faculty of Chemistry, Inorganic Chemistry Laboratory, 23 Dumbrava Rosie Str. 020464 Bucharest, Romania;3. University of Leipzig, Faculty of Chemistry and Mineralogy, Institute of Inorganic Chemistry, Johannisallee 29, 04103 Leipzig, Germany;4. Institute of Physical Chemistry “I.G. Murgulescu”, 202 Spl. Independentei, 060021 Bucharest, Romania;5. Institute of Inorganic and Analytical Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10–14, 55128 Mainz, Germany;1. Department of Material Science and Engineering, Tel Aviv University, Faculty of Engineering, Tel Aviv University, Ramat Aviv, Tel Aviv 6997801, Israel;2. Research Center for Nanoscience and Nanotechnology, Tel Aviv University, Ramat Aviv, Israel;1. Thermodynamic Research Unit, School of Chemical Engineering, University of KwaZulu-Natal, Howard College Campus, King George V Avenue, Durban, 4001, South Africa;2. Industrial Chemistry Research Institute, Rydygiera 8, 01-793, Warsaw, Poland;3. Department of Physical Chemistry, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664, Warsaw, Poland;1. Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, China;2. Jiangzhong Pharmaceutical Group Company Limited, Nanchang 330096, China;3. State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China;4. Graduate School of Medicine and Pharmaceutical Sciences for Research, University of Toyama, Toyama 930-0194, Japan |
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| Abstract: | This work demonstrated the possibility of hydrophobic ionic liquid tricaprylmethylammonium thiocyanate (A336]SCN]) as a solvent in the separation by extraction of polyhydric alcohols from their mixtures with water. The knowledge of (liquid + liquid) equilibrium (LLE) of these mixtures is essential for the design of the extraction process. For this reason, the LLE data of the ternary systems {A336]SCN] + water + glycerol, or ethylene glycol, or 1,2-propanediol, or 1,3-propanediol} were determined at T = 303.2 K and atmospheric pressure. The reliability of the tie-lines data was ascertained by applying the Othmer–Tobias equation, and the non-random two liquid (NRTL) model used to fit the experimental LLE data. The effectiveness of the extraction of polyhydric alcohols from water was evaluated using the solute distribution ratio and the selectivity. The extraction capability of A336]SCN] was compared with that of other ILs. The results indicated that the A336]SCN] was suitable for use as a solvent in (liquid + liquid) extraction of polyhydric alcohols from water. |
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| Keywords: | Ionic liquids Polyhydric alcohols Water Extraction |
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