Biodiesel Production from Waste Cooking Oil using Electrostatic Method

Abstract

Biodiesel (methyl ester) produced from trans esterification of waste cooking oil is a potential material to replace diesel fuel. The biodiesel can be obtained by using electrostatic method equipped with fixed distance electrode 1.5 cm and voltage at 12 volts. Coagulation of particle process i.e. glycerin drops in biodieselglycerin mixture was based on electrical field. Reactants used were methanol over KOH catalyst and temperature was set at 60 C. The residence time was varied as well as methanol to waste cooking oil ratio. Analysis result shows the process was able to obtain yield up to 83.3%. The quality of biodiesel produced was tested and satisfy the requirement according to National Standard of Indonesia (SNI), i.e. density 0.8594 mg/mL (compared to SNI: 0.85-0.90 mg/mL), flash point 191 C (SNI min 100 C), water content 0.0342% (SNI max 0.05%) and viscosity at lower limit 2.31 cSt. According to SNI 7182-2015 the above value meets the specified standard.

Separación Electrostática de una Emulsión de Glicerina en Biodiésel con Aplicación de Varios Voltajes y Distancias entre Electrodos

“…En cambio, para un voltaje de 3000 V y una distancia entre electrodos de 6 cm se logró la misma separación en un tiempo de 45,3 segundos. En los últimos años han aparecido en la bibliografía muy pocos trabajos de varios autores que utilizan esta técnica para purificar biodiésel obtenido de fuentes diversas (Abbaszadeh et al, 2013, 2014; Barakat y Mayer-Laigle, 2017; Ratanabuntha et al, 2018;Susumu, 2018;Trisnaliani y Zikri, 2018;Utama Putra et al, 2018;Xie et al, 2011). En la mayoría de los trabajos no se da información detallada de cómo llevan a cabo los procesos.…”

Biodiesel Production from Waste Cooking Oil using Induction Heating Technology

“…Appl. Chem., 5(1), 2020, [13][14][15][16][17] was high. The molar ratio between oil and methanol is one of the factors that influence the amount of biodiesel yield.…”

“…Based on the graph obtained, the product flash point is influenced by the large molar ratio between oil and methanol. Increasing the flash point value can be caused by less optimal washing processes or glycerol and unreacted catalysts that are still left in the product [17]. The flash point of the product produced is still above the minimum allowed by SNI.…”

“…Appl. Chem., 5(1), 2020, [13][14][15][16][17] However, this method is not efficient because it is needed two step long process for yield of the final product 93.1%. Sanjel et al used an supercritical alcohols method in 2015 to produce waste cooking oil-based biodiesel [4].…”

Effect of Variation of Catalyst Concentration in the Producing of Biodiesel from Crude Palm Oil using Induction Heater

“…Flash points are states that will cause a moment ignition if the surface is brought near to the flame [13]. The relation between catalyst and flash point can be seen in Figure 5.…”