Use of cerium salts to inhibit manganese deposition in water systems
US7252769B2 · kind B2 · utility
15Cited by
8References
16Claims
0Family size
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Inventor
Key dates
| Filing date | Sep 20, 2004 |
| Grant date | Aug 7, 2007 |
| Priority date | — |
| Expiry date | Jul 22, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2103/44
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Methods to control manganese deposition in an aqueous system, which include introducing a cerium-containing composition, and optionally another deposit control agent, to the aqueous system, are described. Also described, are cerium-containing compositions that promote the manganese stabilization performance of polymeric dispersants and phosphonic acids commonly used in water treatment applications. Cerium-containing compositions that can inhibit the oxidative degradation of deposit control agents are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.