STUDY OF STIRRING TIME EFFECT OF LIQUID HAND SOAP PROCESS MADE OF USED COOKING OIL (CASE STUDY USED COOKING OIL FROM BELAKANG I STREET, SIMPANGAN VILLAGE, BEKASI)

Abstract

The problem of waste in the environment is becoming a national problem. One of the wastes that pollute the environment is used cooking oil. In 2019, 13 million tons of used cooking oil in Indonesia amounted to 18.5% of the remaining cooking oil consumption. Disposal of used cooking oil waste can cause soil and water pollution. Prevention can be done by utilizing oil in a liquid hand soap. The study’s objective is to know the effect of stirring time on liquid hand soap manufacturing laboratory scale made of used cooking oil based on analysis of pH, total active materials, insoluble materials in ethanol, and free alkali. The research method of treatment and experiment was making liquid hand soap on a laboratory scale. The sample in this study was used cooking oil taken from Belakang I Street, Simpangan Village. The result and discussion showed that the hand soap product with a stirring time of 45 and 60 minutes had a showed that pH, free alkaline, and insoluble material in ethanol are significant difference and total active materials is insignificant difference using ANOVA: single factors in comparison stirring time 45 minutes and 60 minutes. The parameter is meet the quality standard but not comply using T-test of equals variance.