Restoration of Waste Cooking Oil (WCO) Using Alkaline Hydrolysis Technique (ALHYT) for Future Biodetergent

Abstract

Enourmous quantities of waste cooking oil (WCO) are generated and discharged into environment in diverse
\ncountries without proper treatments, especially in Malaysia, it may cause negative impact on human life and
\necosystem. However, the WCO containing fatty acids can be used as a potential feedstock of bio-basedproductions,
\nlike biodetergents, etc. The renewal of WCO as non-petroleum sources using alkaline hydrolysis
\ntechnique (ALHYT) was conducted at 40°C with the sodium hydroxide addition. After pretreatment and
\nanalysis of WCO, the sulphuric acid and hydrogen peroxide were mixed in a bath stirrer flask. The pH was
\nmonitored, and the added hydrogen peroxide was controlled until the foam subsided. The highest biodetergent
\nyield (90%) was found by the alkaline concentration of 5 M, treatment time of 40 min. and temperature of 70°C.
\nThe waste cooking oil biodetergent (WASCOB) provides impressive results compared another biosurfactant
\nsources, and the restoration of WCO can be considered as a replacement of fossil derived surfactants for future
\nbiodetergent.