Water detoxification by a substrate-bound catecholamine adsorbent
US10829393B2 · kind B2 · utility
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8Claims
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Key dates
| Filing date | Oct 8, 2018 |
| Grant date | Nov 10, 2020 |
| Priority date | — |
| Expiry date | Nov 11, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2303/16
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A bio-inspired method for detoxifying contaminated water is disclosed. In the method, polydopamine, a mussel-inspired adhesive catecholamine was used as an adsorbent to effectively remove from contaminated water three major classes of toxic agents: heavy metal ions (e.g., Cr, Hg, Pb, Cu, and Cd), toxic organic species (e.g., 4-aminopyridine), and radioisotopes (e.g., Lutetium-177). Furthermore, the polydopamine adsorbent was regenerated by treatment with acid or hydrogen peroxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.