iJournals: International Journal of Software & Hardware Research in Engineering (IJSHRE) ISSN-2347-4890 Volume 10 Issue 5 May 2022 Kiagus Ahmad Roni; Netty Herawati; Mardwita; Rifdah; Ami Junia; M. Rizky Syahri R, Volume 10 Issue 5, pp 1-6, May 2022 Glycerol Conversion from Biodiesel of Cooking Oil with Recydu Catalytic Cracking Catalyst At Pertamina Authors: Kiagus Ahmad Roni 1; Netty Herawati 2 ; Mardwita 3 ; Rifdah 4 ; Ami Junia 5 ; M. Rizky Syahri R 6 Chemical Engineering Department, Faculty of Engineering, Muhammadiyah University of Palembang E-mail: kiagusaroni@gmail.com DOI: 10.26821/IJSHRE.10.5.2022.100502 ABSTRACT Glycerol is a by-product of the biodiesel manufacturing process, glycerol is obtained by reacting triglycerides with alcohol. The raw materials used are used cooking oil and methanol. The purpose of this research To determine the effect of Recydu Catalytic Cracking catalyst on glycerol conversion. In this study to obtain the conversion of glycerol, namely through 2 reaction processes, namely the esterification reaction and the trans-esterification reaction,by using 4 variables, namely Stirring Speed and Reaction Comparison and Stirring Time and Amount of Catalyst. The glycerol conversion was obtained from the analysis data for the determination of the total fatty acid equivalent and the analysis of the acetin method. From the results of the study, it was found that the variation of stirring time on the amount of RCC catalyst obtained the largest conversion, namely 52.3% at optimum conditions at 105 minutes and the amount of catalyst was 2.1 grams. Meanwhile, in the variation of Stirring Speed and Reaction Comparison, the largest conversion was obtained, namely 54.51% at the optimum condition at a reaction ratio of 1:3 and the optimum condition at a speed of 90 rpm. Keywords: Glycerol, Crystalline Zeolite, Cooking Oil 1. INTRODUCTION Glycerol (glycerol, glycerin, glycerine) is the simplest glyceride compound, with the hydroxyl being hydrophilic and hygroscopic. Glycerol is a component that composes various kinds of lipids, including triglycerides. Glycerol is widely used as a raw material for the chemical, pharmaceutical, and cosmetic industries. Synthetic glycerol from petrochemical hydrocarbons fulfills 40% of market demand, while the rest is obtained from glycerol recovery as a by-product of liquid soap by distillation and as the main raw material for other oleochemical products that use natural fats and oils. (Aziz et al, 2013). Glycerol is a by-product of biodiesel production from the transesterification reaction and is an alcohol compound with three hydroxyl groups. Glycerol (1,2,3 propanetriol) is a colorless, odorless and viscous liquid that has a sweet taste. Glycerol can be purified by the distillation process so that it can be used in the food, pharmaceutical industry or can also be used for water treatment. As a by-product of the biodiesel industry, glycerol has