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This study investigated the aqueous lactic acid extraction process using indigenous ultrafine polyvinylidene fluoride (PVDF) hollow fiber membrane contactor. Ultrafine PVDF hollow fibers with tighter pore structure were produced by wet spinning technique and fabricated in‐house with an epoxy resin. A kinetic study was performed by varying acid concentrations ranging from 60 to 1320 mol/m3 in an aqueous...