High-flux composite nanofiltration (NF) membrane with electrical double layer (EDL), and preparation method and use thereof
US11958014B2 · kind B2 · utility
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7Claims
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Key dates
| Filing date | Jul 12, 2023 |
| Grant date | Apr 16, 2024 |
| Priority date | — |
| Expiry date | Jul 12, 2043 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A20/131
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A high-flux composite nanofiltration (NF) membrane with an electrical double layer (EDL) and a preparation method thereof are provided. The high-flux composite NF membrane includes: a charged support membrane and a charged separation layer, where a charge carried by the support membrane or the separation layer is a positive charge, a negative charge, or an amphiprotic charge. The high-flux composite NF membrane with an EDL solves the technical problem that the composite NF membrane in the prior art has an unsatisfactory retention rate and a limited application range due to a small charge quantity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.