The current study is focused on the reactive extraction of gallic acid from aqueous solution using tri-n-octylamine (TOA) and tri-n-butyl phosphate (TBP) as extractants dissolved in four different diluents (4-methylpentan-2-one, kerosene, octane-1-ol, and decane) at 298 ± 1 K and 101.325 ± 1 kPa. A mathematical model for mass action law is used for estimation of equilibrium parameters and stoichiometric coefficients. The extraction results were interpreted as distribution coefficient (K_D) and degree of extraction (E). The solvent’s ability to extract acid is observed as MIBK > octane-1-ol > n-decane > kerosene and MIBK > n-decane ≥ kerosene > octane-1-ol with TOA and TBP, respectively. On basis of extraction capabilities, TOA with active diluents and TBP with inactive diluents are found suitable for recovery of gallic acid from aqueous solution/fermentation broth. The feasibility of the extraction process for a counter current reactive liquid extraction column is assessed by calculating design parameters of rotating disc contactor (RDC) such as column diameter (D_T), number of theoretical stages (NTS), height equivalent to theoretical stage (HETS), and height of extraction column (H) for recovery of gallic acid.

中文翻译：

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溶解在不同稀释剂中的胺和磷萃取剂对没食子酸的反应性萃取：溶剂极性和色谱柱设计的影响

目前的研究集中在使用三-水溶液没食子酸的反应萃取Ñ -octylamine（TOA）和三- ñ丁基磷酸酯（TBP）溶解在四个不同的稀释剂（4-甲基戊-2-酮萃取剂，煤油，辛烷-1-醇和癸烷）的温度为298±1 K和101.325±1 kPa。使用质量作用定律的数学模型来估计平衡参数和化学计量系数。提取结果解释为分布系数（K _D）和提取度（E）。通过MIBK>辛烷-1-醇>正癸烷>煤油和MIBK> n观察到溶剂萃取酸的能力癸烷≥煤油>辛烷-1-醇，分别用TOA和TBP处理。基于提取能力，发现具有活性稀释剂的TOA和具有非活性稀释剂的TBP适合从水溶液/发酵液中回收没食子酸。通过计算转盘接触器（RDC）的设计参数（例如塔直径（D _T），理论级数（NTS），与理论级相等的高度（ HETS）和用于回收没食子酸的萃取塔高度（H）。