Heavy metal removal process
US5045210A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 8, 1989 |
| Grant date | Sep 3, 1991 |
| Priority date | — |
| Expiry date | Dec 8, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J47/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An ion-exchange media comprising a modified polysaccharide material and a modified particulate polymeric material, said modified materials comprising a polysaccharide and particulate polymeric materials covalently bonded to a synthetic polymer, said synthetic polymer comprising a copolymer made from a polymerization of: PA0 (a) a polymerizable compound having a chemical group capable of covalently coupling, directly or indirectly, to said materials; and PA0 (b) a polymerizable compound containing (i) an ionizable chemical group or (ii) a chemical group capable of transformation to an ionizable chemical group. The media is useful to selectively remove heavy metal contaminants from aqueous solutions containing said contaminants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.