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Reactive Extraction of Valeric Acid with a Tributyl Phosphate + Diluent System
Journal of Chemical & Engineering Data ( IF 2.0 ) Pub Date : 2020-10-05 , DOI: 10.1021/acs.jced.0c00086 Kudsiya Firdous 1 , Syed Akhlaq Ahmad 1
Journal of Chemical & Engineering Data ( IF 2.0 ) Pub Date : 2020-10-05 , DOI: 10.1021/acs.jced.0c00086 Kudsiya Firdous 1 , Syed Akhlaq Ahmad 1
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The production of carboxylic acids from renewable resources using fermentation technology is still restricted because of the limitations in the recovery of the product from fermentation broth. In the present study, the reactive extraction of valeric acid (0.05–0.13 M) from its aqueous solution with tributyl phosphate (TBP) as an extractant and toluene and kerosene as diluents is studied. The effect of valeric acid concentration in aqueous solution is observed through the distribution coefficients. It has been observed that the distribution coefficient value is increased with the valeric acid concentration for a fixed concentration of the extractant in both the diluents. A similar trend is also observed for the extractant concentration in the diluents at a fixed valeric acid concentration. The values of the distribution coefficient were found to be higher for kerosene than those for toluene. The performance of the two diluents was compared based on the number of extractant molecules reacted per mole of acid, n, and the extraction equilibrium constant, KE. The values of n and KE are found to be greater for kerosene as compared to toluene. It is concluded that kerosene is a better diluent with TBP than toluene for the extraction of valeric acid.
中文翻译：
磷酸三丁酯+稀释剂系统反应萃取戊酸
由于从发酵液中回收产物的局限性，使用发酵技术从可再生资源生产羧酸仍然受到限制。在本研究中，研究了用磷酸三丁酯（TBP）作为萃取剂和甲苯和煤油作为稀释剂从水溶液中反应性提取戊酸（0.05–0.13 M）。通过分布系数观察到水溶液中戊酸浓度的影响。已经观察到，在两种稀释剂中，对于固定浓度的萃取剂，分配系数值随戊酸浓度的增加而增加。在固定的戊酸浓度下，稀释剂中的萃取剂浓度也观察到类似趋势。发现煤油的分配系数值高于甲苯的分配系数值。根据每摩尔酸反应的萃取剂分子数量比较了两种稀释剂的性能，Ñ，提取平衡常数，ķ ë。发现与甲苯相比，煤油的n和K E值更大。结论是，在戊酸提取中，煤油与甲苯相比是更好的稀释剂。
更新日期：2020-11-12
中文翻译：
磷酸三丁酯+稀释剂系统反应萃取戊酸
由于从发酵液中回收产物的局限性，使用发酵技术从可再生资源生产羧酸仍然受到限制。在本研究中，研究了用磷酸三丁酯（TBP）作为萃取剂和甲苯和煤油作为稀释剂从水溶液中反应性提取戊酸（0.05–0.13 M）。通过分布系数观察到水溶液中戊酸浓度的影响。已经观察到，在两种稀释剂中，对于固定浓度的萃取剂，分配系数值随戊酸浓度的增加而增加。在固定的戊酸浓度下，稀释剂中的萃取剂浓度也观察到类似趋势。发现煤油的分配系数值高于甲苯的分配系数值。根据每摩尔酸反应的萃取剂分子数量比较了两种稀释剂的性能，Ñ，提取平衡常数，ķ ë。发现与甲苯相比，煤油的n和K E值更大。结论是，在戊酸提取中，煤油与甲苯相比是更好的稀释剂。
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