Optimization of Biosurfactant for Oil Extraction from Oil Sludge


A possible eco-friendly method of remediation technology in contaminated environments is the use of biosurfactants that are produced by local microorganisms. This study was carried out to obtain the best concentration of biosurfactant for oil extraction from oil sludge. It was optimized by a Taguchi orthogonal array design of L16 (45) with three main factors, including pH, biosurfactant concentration and salinity. The optimum oil recovery occurred when experimental conditions were as the following: biosurfactant concentration (Level 3: 0.25%), PH (level2: 6.5) and Salinity (NaCl: level 2: 0.5%).

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