Process for treating contaminated soil
US5461186A · kind A · utility
5Cited by
5References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 30, 1993 |
| Grant date | Oct 24, 1995 |
| Priority date | — |
| Expiry date | Jul 30, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB09C1/06
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A process is provided for treating soil contaminated with oils, tars and light hydrocarbons. A slurry is formed with coal, water and the contaminated soil and agitated at elevated temperature, resulting in the transfer of the oil from the soil to the coal. The coal and soil mixture is then dewatered for disposal by burning or burial in a landfill.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.