Indonesia Conference Directory

The objective of this research is to separate the Asbuton asphalt in the agitation tank that is equipped with a heater with three stages, namely premixing, digestion, separation of three phases and analysis of the bitumen content in DEX. The purpose of the premixing stage is to reduce the viscosity of Asbuton by adding DEX up to 60 percent of the total mass of Asbuton and DEX and then mixing it for 30 minutes. The digestion step was carried out by adding a mixture of DEX Asbuton with a wetting agent. The wetting agent is a solution of sodium dodecylbenzene sulfonate surfactant (SDBS) and Na5P3O10. This mixture was stirred at 1500 rpm and the process temperature of 60, 70, 80 C for 30 minutes. The surfactant ratio of SDBS to the total mass mix is 0.125; 0.25; 0.37, 0.5%, and the NTP ratio is 0.125; 0.25; 0.37; 0.5% (% mass). Three-phase separation is done by adding water to form three layers. The top layer, which is a DEX-bitumen solution, weighed its weight and measured its density to know the % recovery of bitumen. It can be concluded that the highest percentage of bitumen recovery is 74.63 at 80ºC of temperature, the SDBS concentration of 0.125 percent and the Na5P3O10 concentration of 0.25 percent. Keywords: Asbuton; % recovery; bitumen; Na3P5O10;DEX