The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 23, 2023
Filed:
Oct. 06, 2022
Applicant:
Prince Mohammad Bin Fahd University, Dhahran, SA;
Inventor:
Muhammad Waqar Ashraf, Dhahran, SA;
Assignee:
Prince Mohammad Bin Fahd University, Dhahran, SA;
Primary Examiner:
Int. Cl.
CPC ...
B01J 20/30 (2006.01); B01J 20/28 (2006.01); C02F 1/28 (2023.01); C02F 1/58 (2023.01); B01J 20/32 (2006.01); B01J 20/24 (2006.01); B01J 20/22 (2006.01); B27L 11/06 (2006.01);
U.S. Cl.
CPC ...
B01J 20/3078 (2013.01); B01J 20/28016 (2013.01); B01J 20/28059 (2013.01); B01J 20/3021 (2013.01); B01J 20/3071 (2013.01); B01J 20/3231 (2013.01); B01J 20/3242 (2013.01); B01J 20/3248 (2013.01); C02F 1/288 (2013.01); C02F 1/58 (2013.01); B01J 20/22 (2013.01); B01J 20/24 (2013.01); B01J 20/305 (2013.01); B27L 11/06 (2013.01);
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. A method for organic dye removal from water includes using the modified sawdust sorbent to absorb dyes from water.