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首页> 外文期刊>AIChE Journal >Salting-out of acetone, 1-butanol, and ethanol from dilute aqueous solutions
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Salting-out of acetone, 1-butanol, and ethanol from dilute aqueous solutions

机译：从稀水溶液中盐析丙酮，1-丁醇和乙醇

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The salting-out phase equilibria for acetone, 1-butanol, and ethanol (ABE) from dilute aqueous solutions using potassium carbonate (K2CO3) and dipotassium hydrogen phosphate trihydrate (K(2)HPO(4)3H(2)O) as outstanding salting-out agents were investigated. Increasing the salt concentration strengthened the salting-out effects and improved the distribution coefficients of all three solvents (ABE) significantly. Temperature had a slight effect on the phase equilibria. The K2HPO4 solution (69 wt %) showed a stronger salting-out effect than the K2CO3 solution (56 wt %) on recovering ABE from dilute aqueous solutions. Dilute aqueous solutions containing more solvents increased the recoveries of acetone and 1-butanol, while the results showed a negligible effect on the solubility of ABE. The solubility of ABE was also correlated well with the molar number of salt per gram of water in the aqueous phase. A new equation demonstrated this satisfactorily. (c) 2015 American Institute of Chemical Engineers AIChE J, 61: 3470-3478, 2015
机译：稀溶液中使用碳酸钾（K2CO3）和磷酸氢二钾三水合物（K（2）HPO（4）3H（2）O）的丙酮，1-丁醇和乙醇（ABE）的盐析相平衡研究了盐析剂。增加盐浓度可增强盐析效果，并显着改善所有三种溶剂（ABE）的分配系数。温度对相平衡影响很小。在从稀水溶液中回收ABE方面，K2HPO4溶液（69 wt％）显示出比K2CO3溶液（56 wt％）更强的盐析效果。含有更多溶剂的稀水溶液提高了丙酮和1-丁醇的回收率，而结果表明对ABE的溶解度影响可忽略不计。 ABE的溶解度还与水相中每克水的盐摩尔数相关。一个新的方程式令人满意地证明了这一点。 （c）2015年美国化学工程师学会AIChE J，61：3470-3478，2015

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