Reactive Extraction of Gluconic Acid Using Trioctylamine in Different Diluents ,Chemical Engineering & Technology

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Reactive Extraction of Gluconic Acid Using Trioctylamine in Different Diluents
Chemical Engineering & Technology ( IF 1.8 ) Pub Date : 2021-12-15 , DOI: 10.1002/ceat.202100373
Sivasankar Kakku ₁ , Shripal M. Gaikwad ₂ , Shashank Gaikwad ₃ , Suyogkumar V. Taralkar ₄ , Sarath Babu Billa ₅ , Anand Gupta Chakinala ₁ , Nandana Chakinala ₁

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Reactive extraction of gluconic acid (GA) from aqueous solutions was investigated using trioctylamine (TOA) as extractant in the presence of benzyl alcohol (BA) and 1-decanol (DE) as diluents. Physical extraction of GA with pure diluents in the absence of TOA was found to be poor. Reactive extraction with an amine-diluent mixture enhanced the separation process. Higher extraction efficiencies and distribution coefficients were achieved in the presence of BA as compared to DE. Further optimization studies were carried out to determine the synergistic effect of amine/diluent ratio. Loading ratios higher than 0.5 suggested 3:1 complex formation of GA with the amine. A reactive extraction mechanism of GA in TOA was proposed, and the equilibrium complexation constant was determined.

中文翻译：

三辛胺在不同稀释剂中反应萃取葡萄糖酸

在苯甲醇 (BA) 和 1-癸醇 (DE) 作为稀释剂的情况下，使用三辛胺 (TOA) 作为萃取剂，研究了从水溶液中反应性萃取葡萄糖酸 (GA)。发现在没有 TOA 的情况下用纯稀释剂物理提取 GA 效果不佳。用胺-稀释剂混合物进行反应萃取增强了分离过程。与 DE 相比，在 BA 存在下实现了更高的提取效率和分配系数。进行了进一步的优化研究以确定胺/稀释剂比例的协同效应。负载比高于 0.5 表明 GA 与胺形成 3:1 复合物。提出了GA在TOA中的反应萃取机理，并确定了平衡络合常数。

更新日期：2021-12-15

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