期刊
FLUID PHASE EQUILIBRIA
卷 386, 期 -, 页码 7-12出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.fluid.2014.11.013
关键词
Salting-out effect; Tripotassiumphosphate; Liquid-liquid equilibria; (Water plus acetone+1-butanol+ethanol); Recovery
资金
- National High-tech Research and Development Projects (863) [2012AA021202]
- National Natural Science Funds for Distinguished Young Scholar [20925622]
The salting-out effect of tripotassium phosphate on the liquid-liquid equilibria of the (water + acetone +1-butanol + ethanol) system was investigated at 298.15 K. The water content of the organic phase decreased from 60.00% to 7.11% after the additions of tripotassium phosphate at 298.15 K. The experimental results were correlated with an excellent agreement by using the Othmer-Tobias equation where acetone, 1-butanol, and ethanol were taken as one fictitiously chemical compound. The salting-out effect of tripotassium phosphate under saturated conditions on this system was studied at different temperatures as well. A saturated solution of tripotassium phosphate at 333.15 K was used as an extractant to enrich acetone, 1-butanol and ethanol. When the salting-out factor was greater than 2/2, the recovery of acetone, 1-butanol and ethanol was approximately 100%. There was insignificant amount of tripotassium phosphate that dissolved in the organic phase. (C) 2014 Elsevier B.V. All rights reserved.
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