Removal of heavy metal ions from aqueous solutions with insoluble crosslinked-starch-xanthates
US4051316A · kind A · utility
30Cited by
2References
6Claims
0Family size
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Key dates
| Filing date | Jun 14, 1976 |
| Grant date | Sep 27, 1977 |
| Priority date | — |
| Expiry date | Jun 14, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08B31/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An insoluble alkali metal-magnesium starch-xanthate composition is prepared which is capable of removing most heavy metal ions from aqueous solutions. Concentrations of heavy metal ions contained in several industrial effluents were reduced to below the most stringent aqueous discharge limits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.