FachrulZahrina IdaYelmida2013-05-292013-05-292013-05-29rio andikahttp://repository.unri.ac.id:80/handle/123456789/3501Technology development and rapid population growth led to a number of requirements both in the fields of energy and transportation. Increased fuel consumption but are not offset by the amount of inventory, that needs to be pursued to look for alternative fuels, one of them is biofuel. Catalytic cracking of PFAD with free fatty acid (as palmitic acid) is quite large and with the aid of FeMo/Zoelite catalyst is expected to produce biofuel. This research was conducted to study the effect of temperature variation and concentration of metal to yield (%) the products, to knowing the main component of biofuel and the best process operation from variation of temperature and concentration of Fe/Mo in catalytic cracking of PFAD. Highest product yield (%) obtained was 96% at temperature 400oC and 1,5 (% weight) concentration of Fe/Mo . The results of GC-MS analysis show highest biofuel yield obtained was 74,80% (Gasoline 11,31%, Kerosene and Diesel 63,49%) at temperature 400oC and 0,5 (% weight) concentration of metal.otherPFADbiofuelcatalytic crackingFe/Mostudent Paper Post Degree