Removal of heavy metal ions from aqueous solutions with insoluble crosslinked-starch-xanthates
US4083783A · kind A · utility
29Cited by
2References
6Claims
0Family size
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Key dates
| Filing date | Jun 3, 1977 |
| Grant date | Apr 11, 1978 |
| Priority date | — |
| Expiry date | Jun 3, 1997 |
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 obtained 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.