Publications

Solvent extraction has been used as a method to recover oil content from contaminated soil in oil and gas industry for years. Some solvents and temperature ranges has been chosen to increase the oil recovery rate of extraction process, while only few studies reported that it has been able to reach remaining Total Petroleum Hydrocarbon (TPH) less than 0.5% in less than 30 minutes. During this experiment, acetone and toluene has been chosen to extract oil content from contaminated soil by using solvent extraction process. Temperature selected were between 24�C up to 70�C. Mixing apparatus that has been used was centrifugation machine with 1000 rpm operational speed. Duration of treatment process that has been selected was 10 minutes with some variations of solid to solvent ratio. It was observed that by using toluene and acetone as solvents, the optimum TPH removal obtained at temperature 50�C. In the other hand, optimum solid to solvent ratio toluene ratio was 1:6. Using acetone as a solvent was observed capable to reduce TPH content until below 0.5%, a threshold limit for TPH of contaminated soil regulated by environmental regulation in Indonesia. This paper described the possibility of using solvent extraction as a technology to treat oily contaminated soil to be able to discharge to environment. Some variations of dosage and temperature were also implemented to find the most optimum condition for application of technology.