Water purification using cyclodextrins
US6024879A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 2, 1999 |
| Grant date | Feb 15, 2000 |
| Priority date | — |
| Expiry date | Jul 2, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F1/286
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
The invention relates to a process for the purification of water with a view to separating therefrom at least one organic substance, particularly olfactory pollutants such as (-)geosmine and (+)2-methyl-isoborneol. This process consists of contacting the water to be purified with a cyclodextrin of formula: ##STR1## in which R.sup.1 represents a hydrogen atom, a C.sub.1 to C.sub.12 alkyl group or the acetyl group CH.sub.3 CO--, R.sup.2 and R.sup.3, which can be the same or different, represent H or R.sup.1, and n=5, 6 or 7, in order to include therein the organic substance or substances to be separated and separating the purified water from the cyclodextrin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.