Hot Water Extraction on Aspal Buton

Asphalt demand for road maintenance in Indonesia is increasingly higher, which is by approximately 1.2 million tons each year. However around 2/3 asphalt functioned now is still imported. Buton asphalt can be straighthly used for road coating. Yet, it goes in line with the increasing cost of the world oil. Due to the oil substance over this kind of asphalt (i.e. buton asphalt), it widens more chances to cultivate this asphalt into oil. Extraction is done by process hot water extraction and solvent extraction. This research tried to determine the optimum yield bitumen from asphalt buton extraction process with hot water solvent and n-heksan solvent with the help of strirring. Asphalt which is used as variabel from asphalt buton. The operation variables were temperature, time, and the amount of asphalt buton mixed with hot water solvent. The result suggested that using hot water solvent didn’t generate extract result because the low of temperatur and extraction tension. Therefore by using n-heksan solvent generate % yield bitumen. For rasio of 1 : 5 with a temperature of 60 °C, a time of 30 minutes 2,12 %, a ratio of 1 : 5 at a temperature of 90 °C extraction time 30 minutes 4,84 %, ratio of 1 : 20 at 60 °C, 30 minutes 3,07 %.