Method of treating waste water for organic contaminants with water dispersible organically modified smectite clay compositions
US5130028A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 17, 1990 |
| Grant date | Jul 14, 1992 |
| Priority date | — |
| Expiry date | Sep 17, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D7/71
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A present invention relates to a method of treating waste water for organic contaminants by contacting the waste water with a water dispersible organoclay consisting of the reaction product of at least one ammonium salt and at least one smectite clay, or alternatively, separately with at least one ammonium salt and at least one smectite clay wherein at least one ammonium salt contains at least one hydrophobic group and at least one ammonium salt contains at least one hydrophilic group and wherein said at least one ammonium salt in combination with said at least one smectite clay has a modified methylene blue test value of at least 25 percent sites exchanged.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.