Process for removing pollutants from aqueous streams
US6814871B1 · kind B1 · utility
35Cited by
4References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 13, 2001 |
| Grant date | Nov 9, 2004 |
| Priority date | — |
| Expiry date | Mar 6, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/906
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for removing pollutants from aqueous streams is disclosed. The process involves contacting the stream with a shaped ion exchange composite to remove ammonium and phosphate ions. The composite is a mixture of an anion exchange composition such as zirconia and a microporous cation exchange composition formed into a shaped article and optionally containing a binder such as hydrous zirconium oxide. The microporous cation exchangers are represented by the empirical formula.ApMxZr1-xSinGeyOm  (I)orApMxTi1-xSinGeyOm  (II)
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.