Patent · US Active

Method of producing modified sawdust sorbent

US11471858B2 · kind B2 · utility

0Cited by
1References
11Claims
0Family size

Assignee

Inventor

Key dates

Filing dateJan 8, 2020
Grant dateOct 18, 2022
Priority date—
Expiry dateFeb 4, 2041

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC02F2101/308
  • WIPO fieldChemical engineering
  • WIPO sectorChemistry

Abstract

A method for producing modified sawdust sorbent that includes sulfonating sawdust with sulfuric acid and oxidizing the sulfonated sawdust with hydrogen peroxide. The method yields 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. A method of using the modified sawdust sorbent for organic dye removal from water includes contacting dye contaminated water with the modified sawdust sorbent and forming a dye-impregnated sorbent and decontaminated water.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.