PERAN KATALIS Ni/NZA PADA PROSES PYROLYSIS AMPAS UBI KAYU MENJADI BIO-OIL

Abstract

Current of national energy problem is the tendency of fossil energy consumption increases. This led to the use of fossil energy is too dominant. Therefore, strategic steps to resolve the nation's energy problems is needed such as renewable energy development, one of which is the processing of biomass into bio-oil by pyrolysis method in the presence of Ni/NZA. The purpose of this research was study the effect of supported of Ni metal levels on NZA on resulting yield, knowing the physical and chemical characteristics of bio-oil. Cassava dregs pyrolysis with Ni/NZA catalyst in pyrolysis reactor with cassava dregs size -60+80 mesh 50 grams with 500 mL silinap and supported of metals with various levels of Ni 0%, 1%, 2%, 3% and 4% w/w on NZA with stirring speed of 300 rpm and a temperature of 320 º C for 120 minutes without the presence of oxygen. Yield the greatest value present in 2% of Ni/NZA for 61.87%. Characteristic physical properties that was obtained are density 0,872-0,956 g/mL, acidity 0,053-0,078 g NaOH/g, flash point 44-48 oC, and calorific value 42.55-46.78 MJ kg. For GC-MS results obtained by the dominant chemical components are 2,4,4-trimethyl-2-Pentene; 3,5-dimethyl-Heptane; 1-bromo-3-methyl-Cyclohexane; 3-(3,3-dimethylbutyl)-Cyclohexanone.