Solvent Extraction as Decontamination Process of Oily Soil in Indonesia
Keywords:
oily soil waste, msolvent extraction, biosurfactant, TPH removal, soil washingAbstract
Even though solvent extraction has been known for long time to various of treatment process industry, at soil decontamination area as this process also known as soil washing this treatment process should be studied for further for large scale possibility of implementation. This study described the development of solvent extraction method for treatment some various contaminated soil in Indonesia. Selection of solvents has been developed based on previous research in the earlier stage then continued with optimizing parameters that might give good synergy on removal efficiency as such temperature, moisture, and soil to solvent ratio. Total Petroleum Hydrocarbon (TPH) became main focus on this study, however some other aspects such as metal and heavy metal content using TCLP test were also studied to see its possibility for safely discharged to the environment or having further treatment. Observation statistics were also conducted to see the importance of key parameters during treatment process. Results showed that different characteristics of oily soil might give various TPH removal rate, however key parameters that are significant are original TPH concentration, temperature selection, moisture content, and solid to solvent ratio.
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