THE PRODUCTION OF COBALT METAL-IMPREGNATEDACTIVATED CARBON FROM BAMBOO AS A CATALYST FOR WASTE COOKING OIL (WCO) PYROLYSIS

Waste cooking oil (WCO) pyrolysis conversion process requires a catalyst to produce high-activity and selectivity products. This research aims to analyze the effect of metal-impregnated activated carbon catalysts in the pyrolysis of WCO. In this study, activated carbon from bamboo was impregnated with Co using carbonization at 450°C for 5 hours, physical activation using steam at 800°C for 75 minutes, and ultrasonic radiation for 60 minutes to form a catalyst. The products obtained were then characterized according to SNI 1683:2021 and 06-3730-1995. Several instrumental analyses, including FTIR, BET, and FESEM-EDS, were also utilized. The catalyst was used to crack waste cooking oil through fast pyrolysis to determine the contents produced. The results showed that the bambooactivated carbon produced met Indonesia's standard. The samples contained several functional groups, including C=O and C=C. The FESEM results show a more developed and open pore morphology when the carbon is treated with steam activation, with an increase in carbon content of up to 91.5%, and the Co metal has been successfully impregnated into the activated carbon of about 2.7%. BET results showed that carbon type I isotherm. In contrast, activated carbon and Co-impregnated catalysts showed a type III isotherm pattern with a micro-mesopore size distribution and a surface area of Co-KABT 3% and Co-KABT 5% catalysts of 368,085 m2 /g and 388,853 m2 /g, respectively. The catalyst's selectivity relatively produced alcohol, hydrocarbons, fatty acids, including aldehydes and ketones. The highest yields of hydrocarbons and alcohol were achieved using a Co-KABT 3% catalyst in the cracking results. The catalyst has demonstrated significant results, increasing the production of alcohol and hydrocarbons by almost 400% and 30%, respectively.