Experimental and theoretical perspectives of reactive extraction of gallic acid (GA) from aqueous solutions using tri-n-butyl phosphate (TBP) and tri-n-octylamine (TOA) as extractant dissolved in three nontoxic natural oils, namely, rice bran oil, sunflower oil, and soybean oil, are investigated. The solvent's extractability is observed in an order of sunflower oil > rice bran oil > soybean oil and rice bran oil > sunflower oil > soybean oil with TOA and TBP, respectively. The theoretical insights of reaction mechanisms for the extraction of GA are estimated in the form of overall equilibrium constants (K_E), stoichiometric coefficients (m), individual equilibrium constants (K₁₁, K₁₂, K₂₁), and concentrations (C₁₁, C₁₂, and C₂₁) of various complexes formed between extractant and acid.

中文翻译：

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三辛胺和磷酸三丁酯与天然油反应萃取没食子酸

使用磷酸三正丁酯(TBP) 和三正辛胺 (TOA) 作为萃取剂溶解在三种无毒天然油中，即米糠油、向日葵油和大豆油进行了研究。溶剂的可萃取性按向日葵油 > 米糠油 > 大豆油和米糠油 > 向日葵油 > 大豆油与 TOA 和 TBP 的顺序观察。以总平衡常数 ( K _E )、化学计量系数 ( m )、单个平衡常数 ( K ₁₁、K ₁₂，K ₂₁ )，以及萃取剂和酸之间形成的各种配合物的浓度( C ₁₁，C ₁₂和C _{21 )。}