Method for removing metals from aqueous solutions using mixed lithic materials
US6984328B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 2, 2001 |
| Grant date | Jan 10, 2006 |
| Priority date | — |
| Expiry date | Jul 27, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/912
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
The present invention provides a process for removing metals from aqueous solutions. This process entails contacting the aqueous solution with at least one neutralizing agent and at least one precipitating agent that preferentially precipitates metals from the aqueous solution. The neutralizing agent is a lithic material that neutralizes the acidity of the aqueous solution to promote the precipitation of metals form the aqueous solution. The precipitating agent is a lithic material that serves as a preferred locus of deposition for the metals precipitated by the neutralizing agent, i.e. those metals precipitated form the aqueous solution during neutralization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.