Abstract
Laboratory-scale studies were conducted to determine bioavailability-based endpoints for an innovative treatment process involving soil flushing with surfactants and above-ground treatment of surfactant wash water by photolysis, followed by aerobic bioremediation. In the present paper, we report on the surfactant washing of PCB-contaminated soils and UV-irradiation of soil wash waters. 85% of the Soxhlet extractable PCBs were removed with three successive wash cycles using a surfactant mass loading ratio of 0.1 g polyoxyethylene 10 lauryl ether/g soil. Photolysis of the resulting wash water successfully dechlorinated 40% of the PCBs in solution, paving the way for facile bioremediation in subsequent steps. The cost of soil washing and photolysis using this process was estimated to be $0.454/kg or about $450 per metric ton of soil.
| Original language | English |
|---|---|
| Pages (from-to) | 129-136 |
| Number of pages | 8 |
| Journal | Hazardous and Industrial Wastes - Proceedings of the Mid-Atlantic Industrial Waste Conference |
| State | Published - 1999 |
| Externally published | Yes |
| Event | Proceedings of the 1999 31st Mid-Atlantic Industrial and Hazardous Waste Conference - Storss, CT, USA Duration: Jun 20 1999 → Jun 23 1999 |
