The results as illustrated in Fig. 8 demonstrated that at lower
flow rates of stripping solution, in particular 50 mL/min, the
efficiency of extraction was lower than at 100 mL/min owing to the
difficulty in supplementing amoxicillin in the hollow fiber module.
Furthermore, increasing the flow rate from 50 to 100 mL/min leads
to a thinner aqueous boundary layer, high shear force and higher
turbulence; consequently, the mass transfer resistance is reduced
[47]. The highest percentages of stripping solution observed