Purification of waste stream from tanning process by adsorption on an adsorbent comprising a mixture of alumina and Y zeolite
US4717483A · kind A · utility
13Cited by
6References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 23, 1986 |
| Grant date | Jan 5, 1988 |
| Priority date | — |
| Expiry date | Jun 23, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2103/24
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
An improved process is disclosed for the simultaneous removal of ammonia, sulfides and organic impurities from an impure aqueous stream from a tanning process which comprises contacting the impure stream with an adsorbent comprising a mixture of alumina and a Y zeolite.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.