Enhancement of solubility and mass transfer coefficient of salicylic acid through hydrotropy
Enhancement of solubility and mass transfer coefficient of salicylic acid through hydrotropy
摘要
This study deals with the effect of hydrotropes on the solubility and mass transfer coefficient of salicylic acid. The solubility and mass transfer studies were performed using the hydrotropes, i.e., sodium acetate, sodium salicylate, citric acid, and urea at concentrations of 0-3.0 mol/L and system temperatures of 303-333 K. It was found that the solubility and mass transfer coefficient of salicylic acid increases with increase in hydrotrope concentration and also with system temperature. All hydrotropes used in this work showed an enhancement in solubility and mass transfer coefficient to different degrees. The maximum enhancement factor values were determined for all hydrotropes used in this study. The highest value was 28.08 for solubility studies and 10.42 for mass transfer studies. The performance of hydrotropes was measured in terms of the Setschenow constant （Ks）. The highest value observed was 0.696.
这研究在溶解度和水杨酸酸的集体转移系数上处理水疗院修辞的效果。溶解度和集体转移研究用水疗院修辞被执行，即，在 0 ∼3.0 mol/L 的集中和 303 ∼333 K 的系统温度的钠醋酸盐，钠水杨酸盐，柠檬性的酸，和脲。溶解度和水杨酸酸的集体转移系数与系统温度随水疗院修辞集中并且也的增加增加，这被发现。在这个工作使用的所有水疗院修辞在溶解度和集体转移系数显示出改进到不同的度。最大的改进因素价值为在这研究使用的所有水疗院修辞被决定。最高的价值为溶解度研究是 28.08， 10.42 为质量转移研究。水疗院修辞的表演以 Setschenow 常数被测量(K <SUB > s </SUB>) 。观察的最高的价值是 0.696。
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