Method for making and using a dye sorbent
US10913050B1 · kind B1 · utility
3Cited by
1References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 11, 2020 |
| Grant date | Feb 9, 2021 |
| Priority date | — |
| Expiry date | Aug 11, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2101/308
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for producing a modified sawdust sorbent. The method involves sulfonating sawdust with sulfuric acid and oxidizing the sulfonated sawdust with hydrogen peroxide. The method yields a modified sawdust sorbent containing sulfonated and oxidized cellulose. The modified sawdust sorbent has a higher surface area, higher organic dye adsorption capacity, and more rapid organic dye adsorption rate than unmodified sawdust. Also disclosed is a method of using the modified sawdust sorbent for organic dye removal from water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.