Abstract:Synthesis of diethanolamide (surfactant) from CaO/zeolite-catalysed used cooking oil has been conducted. The results showed that the yields of the reactions between methyl esters and diethanolamine with CaO concentration at 3%, 5%, and 7% were 64.47%, 92.91%, and 87.05%, respectively. The characterization showed that the higher surfactant concentration, the greater the capability of decreasing surface tension. The water-surfactant-pertalite system had an emulsion index of 67%. The new liquid mixture system (wa… Show more
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