Surfactant soil remediation
US5376182A · kind A · utility
19Cited by
18References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 17, 1993 |
| Grant date | Dec 27, 1994 |
| Priority date | — |
| Expiry date | Mar 17, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB09C1/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Soil contaminated with contaminants such as a heavy hydrocarbon or a chlorinated hydrocarbon is cleaned, preferably on-site, by contacting the contaminated soil with a supersurfactant such as the micellar surfactant formed by sonicating polar substituted heavy hydrocarbon in the presence of an alkali metal salt such as sodium silicate and a free radical generating agent such as hydrogen peroxide and sonicating the suspension. At least 85% of the contaminant is flushed or washed from the soil including fine particles having a particle size below about 70 microns.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.