Analysis Proximate, Ultimate, and Thermal Gravimetric Based on Variations Dimensions of Briquettes from Waste Jackfruit Crust

This research was conducted to test proximate, ultimate, thermal gravimetic analysis based on variations in dimensions of briquettes from jackfruit crust, the process of charcoal making using pyrolysis furnaces. Jackfruit crust heating in the furnace uses a temperature of 5500C for 30 minutes, after the white stove smoke is turned off and all the furnace doors are closed so that the jackfruit crust becomes charcoal and is held for 12 hours. Then the charcoal is removed and crushed with a crushing machine with an 80 mesh charcoal powder size. Then mixed with the adhesive material of tapioca flour with a weight percentage of 5% of the total weight of charcoal powder and enough water to be made to make the mixture. After that the dough is printed with a briquette dimension of 30 mm in diameter, and 40 mm, 50 mm, 60 mm in height and then dried. After being dry, proximate, ultimate and thermal gravimetric are tested. The objective of the research is to test the title proximate, ultimate, thermal gravimetric based on the dimensions variation of briquettes from jackfruit crust material is to obtain the same briquette heat value as the briquette heat value with SNI No.1 / 6235/2000 and the best thermal gravimetric using 80 Mesh briquette powder size with 30 mm diameter dimensions and 40.50 and 60 mm briquette lengths. The results of testing proximate briquettes diameter 30 mm, and height 40 mm, 50 mm, 60 mm the calorific value above the Quality Standard of Wood Charcoal Briquettes SNI No.1 / 6235/2000 that is ≥ 5000 calories / gram. The ultimate test results based on the Dulong (1880) formula on briquettes with dimensions of diameter 30 mm, height 50 mm and 60 mm have a kaor value of ≥ 5000 calories / gram, and briquettes with a diameter of 30 mm and a height of 40 mm have a heating value of ≤ 5000 calories / gram. The best thermal gravimetric analysis of briquettes is briquettes with a diameter of 30 mm and a height of 60 mm because the percentage of burning briquettes is the lowest at 15.68% of the initial weight to reach temperatures of 301.70 C.