EFFECT OF SOIL LOADING AND pH DURING BATCH SOLVENT EXTRACTION OF FLUORENE FROM SOIL USING A LIPOPETIDE BIOSURFACTANT AQUEOUS SOLUTION
نویسندگان
چکیده
In this work a lipopeptide biosurfactant, obtained from an agro industrial residue, was used as washing agent to remove fluorene from soil. Soil extraction carried out with biosurfactants is more environmental friendly tan those extraction based on volatile solvents or chemical surfactants. Thus, in order to find the best operational conditions, the effect of soil loading and pH during batch solvent extractions were studied by using different solid/liquid ratios and pH. We found that generally a decreasing soil:solution ratio resulted in a higher extraction efficiency. Thus when the solid/liquid ratio was fixed at 1/50, 100 % of fluorene was extracted from soil at pH 6.
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