PRODUCTION BASIC SOAP OF MULTIVALENT METAL MIXTURES WITH OLEIC ACID

• Main Author: Dimitra Mirza, Finian
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/48297
• Institution: Institut Teknologi Bandung

Biofuel gasoline production technology through the pyrolysis of metal base soap is underway on Chemical Engineering Community, Institut Teknologi Bandung. The selection of metal base soap as an intermediate for the production of biofuel gasoline via pyrolysis is felt to have hope in future because the pyrolysis residue of metal base soap still can be recycled by the further processing into metal base soap again. Metal base soap is made by reacting fatty acids (in this study are oleic acid) with multivalent metal hydroxides, namely Zn4Ca????Mg(2 - ????)Cr2(OH)16CO3, with ???? of 0 < ???? < 1. Oleic acid is obtained from PFAD which is separated between oleic acid and palmitic acid through the Hoerr method (1955). Preparation of hydroxide by coprecipitation of nitrate salts. The purpose of the study is to obtain the optimal conditions for the manufacture of metal hydroxides from the pH or composition of the metals (????). Furthermore the desired condition of metal base soap is one that has the smallest possible acid number or zero. The saponified hydroxide value in the desired metal base soap is 50%. This result is needed because the desired product is basic metal soap. The experiment result showed that the separation of fatty acids from PFAD had many difficulties because it was difficult to separate among saturated and unsaturated acids in PFAD. Hence, another method is recommended, namely the separation of unsaturated fatty acids with urea complexation.