Modification of iron-based media for water treatment
US10676376B2 · kind B2 · utility
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Key dates
| Filing date | Sep 13, 2017 |
| Grant date | Jun 9, 2020 |
| Priority date | — |
| Expiry date | Sep 13, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2101/20
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Methods of modification of zero-valent iron (ZVI) to improve its performance in removing contaminants from a discharge stream. In some aspects, the methods include contacting ZVI-impregnated disks with solutions containing metal cations such as Ni2+, Cu2+, Fe2+, or Pd2+. In some aspects, a wastewater stream is treated with a metal cation solution, then passed over ZVI. Compositions for treating wastewater include ZVI that is modified with a metal cation solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.