Abstract
Biological sulfonate was synthesized from waste cooking oil by sulfonation. Fourier transformation infrared spectrometer was employed to characterize biological sulfonate. The influences of the surfactant concentration, alkali concentration and emulsification on the partition coefficient of biological sulfonate in oil and water were investigated. The experimental results show the waste cooking oil can react with the fuming sulphuric acid to successfully produce biological sulfonate. The partition coefficients of biological sulfonate have a small decrease when biological sulfonate concentration is more than 0.2%. Adding alkali to biological sulfonate solution or emulsifying biological sulfonate solution and crude oil can both improve the partition coefficients of biological sulfonate in oil and water, and the variation law of the partition coefficients with the concentration of biological sulfonate remain unchanged. By contraries, after adding alkali to solution and emulsifying it with crude oil, the partition coefficients of biological sulfonate will increase with the increase of surfactant concentration.
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