Titania-based treatment solution and method of promoting precipitation and removal of heavy metals from an aqueous source
US11339075B2 · kind B2 · utility
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18Claims
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Key dates
| Filing date | Apr 18, 2019 |
| Grant date | May 24, 2022 |
| Priority date | — |
| Expiry date | Dec 16, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2209/06
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A treatment solution and method for removing heavy metal contaminants and oxyanion contaminants from an aqueous solution by promoting the affinity of precipitating the contaminants. The method adjusts the pH and the ORP of the contaminated aqueous solution by applying FeCl2 and/or NaOH reducing agents, and using and applying a titania-based treatment solution of TiO(SO4), H2SO4, and FeSO4.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.