Process for recovering organic hydroxides from waste solutions
US5868916A · kind A · utility
5Cited by
6References
25Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 12, 1997 |
| Grant date | Feb 9, 1999 |
| Priority date | — |
| Expiry date | Feb 12, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2209/06
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In one embodiment, the present invention relates to a process for recovering an organic hydroxide from waste solutions containing the organic hydroxide and impurities including the steps of precipitating the organic hydroxide from the waste solution as an insoluble salt; removing the salt from the waste solution and placing the salt in a liquid to form a second solution; charging the second solution to an electrochemical cell containing at least two compartments, a cathode, an anode and a divider and passing a current through the cell whereby the organic hydroxide is regenerated; and recovering the organic hydroxide from the cell.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.