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US 4,619,744 AGranted
Recovery of heavy metals from aqueous solutions
AssigneePhillips Petroleum Company
InventorRobert L. Horton
Life of this patent
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Abstract
Process for the recovery of heavy metals from aqueous solution by reaction with soluble, functionally-substituted polymer upon which the heavy metal loads, and optionally crosslinks by interaction with the heavy metals present in solution. Metals including those having atomic numbers of 39-51, 57-84 and 89-117, inclusive, can be recovered by the practice of the present invention.
Claims12
A process for the recovery of heavy metals selected from the group consisting of elements with atomic numbers
- 39-51,
- 57-84, and
- 89-117 from aqueous solution which comprises
- (a) contacting said solution with at least one soluble, cross-linkable polyelectrolyte having the structure:
- ##STR4## L.sup.1 =any member of the group defined by L, with the proviso that for any given polymer L.noteq.L.sup.1,
- R=H or C.sub.1 -C.sub.8 alkyl or aryl group;
- and
- R'=C.sub.1 -C.sub.4 alkyl group,
- n=2 up to 10.sup.6, and
- m=0 up to n, with the proviso that m is selected so that the resulting polymer is water soluble, under conditions suitable to cause crosslinking and precipitation of said polyelectrolyte, and
- (b) recovering the precipitate produced in step (a).
8 more elements
A process for the recovery of heavy metals selected from the group consisting of elements with atomic numbers
- 39-51
- 57-84, and
- 89-117
- from solution which comprises
- (a) contacting said solution with at least one soluble, cross-linkable polyelectrolyte under conditions suitable to cause loading of said polyelectrolyte with said heavy metals,
- (b) precipitating the heavy metal loaded polyelectrolyte produced in step (a), and
- (c) recovering the precipitate produced in step (b).
4 more elements
Dependencies are inferred from the claim text.