Preface Detergent is a compound that is close to the life of the community. Detergent is often used by the community for various activities, including washing household furniture, washing dishes, and for various industrial activities. The existence of detergent that is very close to the life of society is inseparable from the large share of…
Waste Cooking oil is a cooking oil that has been used repeatedly. This oil is to used household needs, generally can be reused for culinary concern, but when viewed from its chemical composition, waste cooking oil contains carcinogenic compounds, which occur during frying process (Anonymous, 2011a), so it is quite worrying when we reused for…