Method for decontaminating soils
US5096600A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 30, 1990 |
| Grant date | Mar 17, 1992 |
| Priority date | — |
| Expiry date | Apr 30, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/925
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A method for substantially degrading and detoxifying soils contaminated with haloorganic compounds is shown. The method comprises contacting a soil, sediment, or sludge containing less that 5% by weight of a haloorganic contaminant, with a reagent of the formula MX, where M is a metal selected from the group consisting of K, Na, Ca, Zn, Mg, Ba, Pb, and X is hydroxide, carbonate, oxide, or acetate. The contact and subsequent reaction is carried out under conditions which insure the phase compatibility of the haloorganic contaminant and the reagent, and preferably under anhydrous conditions. The contact is carried out for a time sufficient to effect the dehalogenation of at least 90% of the contaminant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.