Chromate ion removal from aqueous solutions
US4525483A · kind A · utility
5Cited by
6References
2Claims
0Family size
Inventors
Key dates
| Filing date | Feb 1, 1982 |
| Grant date | Jun 25, 1985 |
| Priority date | — |
| Expiry date | Feb 1, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J47/04
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Chromate ions present in aqueous solutions, e.g. cooling tower blowdown water or liquors obtained from the electrolysis of aqueous sodium chloride solutions, are substantially completely removed by passing the solution through an intimate mixture of an anion exchange resin in the chloride form and a weak cation exchange resin in a conditioned hydrogen form.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.