Magnetic biomass carbon-quaternary phosphonium salt sterilization material, preparation method therefor and usage thereof
US12121031B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 21, 2020 |
| Grant date | Oct 22, 2024 |
| Priority date | — |
| Expiry date | Jul 10, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P60/21
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
The present invention provides a magnetic biochar-quaternary phosphonium salt bactericidal material, a preparation method therefor and usage thereof, and belongs to the field of water treatment. The preparation method comprises: 1) using corn straw biochar as a precursor to prepare magnetic biochar by a co-precipitation method; and 2) adding the magnetic biochar into deionized water, then adding a quaternary phosphonium salt, performing the magnetic stir at room temperature, raising the temperature after sufficient impregnation, carrying out a hydrothermal reaction, and then cooling to the room temperature to obtain the bactericidal material. The temperature is raised to 60° C.˜70° C. The recycling of the biochar material is effectively realized, the long-acting sterilization of the quaternary phosphonium salt bactericide and the magnetic recovery and recycling of the materials are realized, the residue of the bactericide is reduced, and a foundation is laid for the effective removal of microorganisms in wastewater.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.