The effectiveness of soil washing as a remediation method on oil spill contaminated soil (Case Study: Wonocolo Traditional Oil Mine)

Abstract

The exploitation of petroleum in Wonocolo is conducted with traditional equipment, leading to contamination by oil spills. Oil Spill contamination has the potential damage to ecological, soil, and surface water, caused by the hydrocarbon content itself. Total Petroleum Hydrocarbon (TPH) test results on contaminated soil show the highest value at 17.4%. Experiments were carried out to analyze the effectiveness of soil washing using Alky Benzene Sulfonate surfactants to reduce the TPH number. Experiments are conducted with variations in surfactant concentrations such as 0%, 0.25%, 0.50%, 0.75%, and 1%. The results of the Soil Washing experiment showed that the surfactant concentration with the highest effectiveness was at a concentration of 0.25%. Concentration of 0.25% reduces TPH by 9% with 51.72% effectiveness.