Equilibrium study on the reactive extraction of heterocyclic monocarboxylic acids from the aqueous solution using Alamine 300/diluent composite solvent: Optimization and modeling of the solvent effect

摘要

Abstract Experiments were conducted to optimize the extraction equilibrium of reactive systems (water + heterocyclic carboxylic acid + Alamine 300/diluent) at T?=?298.2?K and P?=?101.3?kPa. The uptake capacity of the commercial composite solvent Alamine 300/diluent approximates the order: 2‐furoic acid ≥ alpha‐oxo‐2‐furanacetic acid > tetrahydro‐2‐furoic acid, and n‐heptane < 1,2‐dichloroethane < 1‐heptanol ≤ 2‐heptanone. Four differentiable models featuring the effects of separation ratio R and synergistic enhancement SE factors are stringently tested to identify global optimization ranges by derivative variation method as follows: 0.2?