Magnetic nanoparticle microbial composite with core-shell structure, preparation method thereof, and its application in the treatment of azo dyes
US10800689B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 18, 2018 |
| Grant date | Oct 13, 2020 |
| Priority date | — |
| Expiry date | Feb 27, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2305/08
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
The invention discloses a magnetic nanoparticle microbial composite material with a core-shell structure and a preparation method thereof as well as application of the magnetic nanoparticle microbial composite material in azo dye treatment. The preparation method comprises the following steps: putting ferroferric oxide into an ethanol solution with ferric trichloride and trimesic acid; carrying out layer-by-layer self-assembly and ultrasonic condition reaction in sequence to prepare modified ferroferric oxide nanoparticles; then loading the modified composite material on the surfaces of microorganisms. The composite material prepared by the preparation method disclosed by the invention has the advantages of high adsorption effects and capability of carrying out local enrichment on the dye; meanwhile, magnetic separation can be performed, and thereby the azo dye can be removed efficiently.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.