MODELING STUDY OF BIODIESEL OXIDATION REACTION KINETIC

• Main Author: Panigoro Rahardjo, Fadhil
• Format: Final Project
• Language: Indonesia
• Subjects: Teknologi
• Online Access: https://digilib.itb.ac.id/gdl/view/76014
• Institution: Institut Teknologi Bandung

Diesel fuel is one of the most used fuels in Indonesia, with a consumption of 55.4 million liters in 2017 and continues to increase every year. This diesel fuel produces harmful emissions when burned, and diesel-fueled vehicles are the central source of dangerous pollutants, such as ground-level ozone and particles. Therefore, one solution, to reduce the consequences of using diesel fuel, is to use alternative fuels that are renewable and environmentally friendly, one of the alternative fuels is biodiesel. In Indonesia, biodiesel is produced mostly with palm oil as raw material. Palm oil is one of the important agricultural products in Indonesia with a plantation area of 11.3 million. The use of biodiesel often gives problems to the engine such as corrosion and filter clogging. Therefore, some biodiesel properties have a limited value, for example the acid value of biodiesel is limited to a maximum of 0.5. However, the phenomenon of oxidation can cause changes in the properties of related biodiesel due to the formation of oxidation products such as carboxylic acids. The compounds that formed as a result of the oxidation can increase the acid number so that the corresponding biodiesel corrosive level will increase. In addition, compounds of insoluble oxidation products can precipitate at low temperatures and then form solids that do not melt at engine operating temperatures, and then causing blockages. This research was conducted by modeling the kinetics of the biodiesel oxidation reaction from the reaction mechanism. Reaction kinetics parameters such as reaction order, reaction rate constant, activation energy, and pre-exponential factor value will be determined based on research data conducted by Canacki et al., (1999). From the modeling results, the order of the substrate reaction in the reaction rate equation is 0.585; 0.614; 0.6116 with an average value of 0.604, and it was also found that the reaction rate constant was 0.129. Moreover, it was found that oxygen affects the rate of reaction with a reaction order of 0.6085. Furthermore, the activation energy value is ???????????????????????????????????? KJ/mol and the pre-exponential factor value is ????????????????????????????????????????????????.