Process for the removal of organic contaminants from solids
US4869825A · kind A · utility
24Cited by
22References
10Claims
0Family size
Inventor
Key dates
| Filing date | Apr 15, 1988 |
| Grant date | Sep 26, 1989 |
| Priority date | — |
| Expiry date | Apr 15, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/909
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for the decontamination of materials such as soil, sediments and sludges contaminated with organic contaminants such as PCB's. The process comprises leaching a mixture of solids, water and contaminant in a three step process with solvents to obtain contaminated solvent and water and a mixture of decontaminated solids and solvent. The contaminant is stripped from the contaminated leaching solvent with a stripping solvent to concentrate the contaminants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.