PURIFIKASI MINYAK JELANTAH PADA PROSES PEMBUATAN SABUN PADAT
The need for cooking oil is increasing with the increasing population in Indonesia. This causes an increase in used cooking oil or commonly known as used cooking oil. The purpose of this study was to identify the process of purification of used cooking oil as an alternative material in the manufacture of solid soap and to identify the water content, free fatty acid content and pH of the processed soap. The method used in this research is a true experimental design, as well as a stratified sampling technique. The results showed that the best sample in this study for the water content of solid soap was the one that used coconut fiber as an adsorbent, namely 22.8818 %, but it did not meet the SNI 06-3532-1994 standard for good solid soap water content, which was a maximum of 15%, for free fatty acid solid soap is the addition of sugarcane bagasse adsorbents, namely 1.791 %, coconut pulp 1.9101 %, and coconut fiber 2.1153 % has met the maximum SNI of 2.5%, and for pH levels obtained 8 for coconut bagasse adsorbents, 7, 5 for coconut fiber, and 7.4 for bagasse, have met the standard. The conclusion in this study was that the levels of free fatty acids and pH were in accordance with the standards of SNI SNI 06-3532-1994.