Fly ash based ceramic microfiltration membranes for oil-water emulsion treatment: Parametric optimization using response surface methodology

摘要: Abstract This article addresses the fabrication of ceramic microfiltration membranes (M1-M3) with uni-axial dry compaction method and fly ash, quartz calcium carbonate as inorganic precursors. Raw material membrane characterizations were conducted using particle size (PSD), thermo gravimetric (TGA), X-ray diffraction (XRD), scanning electron microscope (SEM), mechanical stability, chemical porosity, pore pure water permeability analyses. Dead-end flow (MF) experiments to evaluate performances 50–200 mg/L synthetic oil-water emulsions. The MF enabled performance in terms flux rejection for variant combinations feed concentrations applied pressures. Among all membranes, M2 demonstrated superior (80.82–99.99%) (0.337–4.42 × 10 −4  m 3 /m 2  s). Response surface methodology (RSM) via central composite design (CCD) was employed optimize understand interaction possible influencing process variables on treatment efficiency rejection. optimum parametric conditions are found be at an pressure 345 kPa concentration 176.07 mg/L which exhibits a maximum oil 97% permeate 2.6 × 10  s.