Composition and method for treatment of lead-containing surface coatings and soil
US5976270A · kind A · utility
8Cited by
18References
2Claims
0Family size
Inventors
Key dates
| Filing date | Dec 24, 1997 |
| Grant date | Nov 2, 1999 |
| Priority date | — |
| Expiry date | Dec 24, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62D2101/43
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A method is provided to render non-hazardous surface soil which is contaminated with lead compounds. The soil is treated by applying an aqueous composition comprising hydrogen peroxide, ammonium hydroxide, nitric acid and acetic acid and allowing said composition to migrate through the soil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.