Method for making absorbent oil fly ash powder
US11154837B2 · kind B2 · utility
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15Claims
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Key dates
| Filing date | Dec 1, 2020 |
| Grant date | Oct 26, 2021 |
| Priority date | — |
| Expiry date | Dec 1, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W10/37
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of removing an organic pollutant from water by contacting the water with a ball milled and sonicated oil fly ash powder to adsorb the organic pollutant onto the ball milled and sonicated oil fly ash powder. A method of producing a ball milled and sonicated oil fly ash powder involving ball milling oil fly ash to provide ball milled oil fly ash particles with an average particle size of less than 1 μm and sonicating the ball milled oil fly ash particles in an aqueous medium to form the ball milled and sonicated oil fly ash powder. A method of improving recovery of valuable metals/elements from oil fly ash.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.