Induced gas flotation (IGF) is an efficient physical method for separating dispersed oil from produced water. This study optimized IGF parameters for oils with near-water density (specific gravity ≈ 0.9) using Response Surface Methodology (RSM). Experiments evaluated flotation time, air-flow rate, salinity, oil concentration, and temperature. Oil-separation efficiency, defined as the percentage ratio of recovered oil mass to the initial oil mass, was measured in a 2 L glass column equipped with a silicone-membrane bubbler. The RSM model identified flotation time and salinity as dominant factors (p < 0.05). Optimum conditions (45 min, 0.5 L min⁻¹ air flow, 20 g L⁻¹ salinity, 1000 ppm oil, 20 °C) yielded about 70 % removal efficiency. Higher temperature reduced efficiency due to increased oil solubility. The results confirm IGF’s applicability for challenging near-density oil systems and provide an experimentally validated optimization framework.
Bahador, S. , Samimi, A. and Mohebbi-Kalhori, D. (2025). Optimization of Induced Gas Flotation Parameters for Removal Efficiency of Near-Water-Density Oils Using Response Surface Methodology. Journal of Particle Science and Technology, (), -. doi: 10.22104/jpst.2025.7531.1274
MLA
Bahador, S. , , Samimi, A. , and Mohebbi-Kalhori, D. . "Optimization of Induced Gas Flotation Parameters for Removal Efficiency of Near-Water-Density Oils Using Response Surface Methodology", Journal of Particle Science and Technology, , , 2025, -. doi: 10.22104/jpst.2025.7531.1274
HARVARD
Bahador, S., Samimi, A., Mohebbi-Kalhori, D. (2025). 'Optimization of Induced Gas Flotation Parameters for Removal Efficiency of Near-Water-Density Oils Using Response Surface Methodology', Journal of Particle Science and Technology, (), pp. -. doi: 10.22104/jpst.2025.7531.1274
CHICAGO
S. Bahador , A. Samimi and D. Mohebbi-Kalhori, "Optimization of Induced Gas Flotation Parameters for Removal Efficiency of Near-Water-Density Oils Using Response Surface Methodology," Journal of Particle Science and Technology, (2025): -, doi: 10.22104/jpst.2025.7531.1274
VANCOUVER
Bahador, S., Samimi, A., Mohebbi-Kalhori, D. Optimization of Induced Gas Flotation Parameters for Removal Efficiency of Near-Water-Density Oils Using Response Surface Methodology. Journal of Particle Science and Technology, 2025; (): -. doi: 10.22104/jpst.2025.7531.1274
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