Wastewater treatment with desorbing of an adsorbate from an adsorbent with a solvent in the near critical state
US4147624A · kind A · utility
39Cited by
8References
11Claims
0Family size
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Key dates
| Filing date | Apr 15, 1976 |
| Grant date | Apr 3, 1979 |
| Priority date | — |
| Expiry date | Apr 15, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/928
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An adsorbate is removed from an adsorbent by contacting the adsorbent with a near critical liquid which is a solvent for the adsorbate. The near critical liquid containing the dissolved adsorbate is then subjected to at least partial vaporization to form a vapor in which the adsorbate is substantially less soluble thereby making it possible to remove the adsorbate from the near critical liquid. The vapor is then condensed to restore it to the near critical liquid state wherein it is a solvent for the adsorbate so that it may be reused. The process is particularly suitable for adsorbent regeneration in the treating of waste-waters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.