Method of obtaining lead and organolead from contaminated media using metal accumulating plants
US5320663A · kind A · utility
27Cited by
5References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 2, 1992 |
| Grant date | Jun 14, 1994 |
| Priority date | — |
| Expiry date | Jul 2, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W10/10
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
It has been found that Ambrosia sp. and Apocynum sp. accumulate lead in the leaves, stems, and roots when it grows in soil containing organic or inorganic species of lead. Lead is accumulated in the leaves and stems to a greater extent than in most other plants. Lead can be economically recovered from contaminated soil and sludge by harvesting Ambrosia sp. or Apocynum sp. grown in media containing high concentrations of lead.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.