Control of aqueous arsenic, selenium, mercury or other metals from flue gas
US11319233B2 · kind B2 · utility
0Cited by
12References
9Claims
0Family size
Inventor
Key dates
| Filing date | Aug 16, 2019 |
| Grant date | May 3, 2022 |
| Priority date | — |
| Expiry date | Feb 14, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2209/06
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention pertains to methods of reducing dissolved elements such as arsenic, selenium and mercury in aqueous solutions using, for example, various barium compounds to partition said elements to a solid phase. Such methods are particularly useful for reducing such elements at various points in coal and oil-fired power plants prior to final waste water treatment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.