Removal of mercury from waste streams
US5154833A · kind A · utility
12Cited by
4References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 8, 1992 |
| Grant date | Oct 13, 1992 |
| Priority date | — |
| Expiry date | Jan 8, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/914
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Thimerosal is removed from aqueous effluent streams from vaccine production to provide an invironmentally-acceptable effluent stream. The thimerosal first is converted to ionic form by chlorination, the resulting solution is dechlorinated to remove dissolved unreacted chlorine, and then the ionic mercury is removed by ion-exchange employing thiol groups.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.