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. 17, 2022
Filed:
Aug. 21, 2020
Applicant:
Fuel Tech, Inc., Warrenville, IL (US);
Inventors:
Mingming Fang, Naperville, IL (US);
Heng Wang, Hoffman Estates, IL (US);
Assignee:
Fuel Tech, Inc., Warrenville, IL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C02F 1/28 (2006.01); B01J 20/12 (2006.01); C02F 101/10 (2006.01);
U.S. Cl.
CPC ...
C02F 1/281 (2013.01); B01J 20/12 (2013.01); C02F 2101/106 (2013.01);
Abstract
The description relates to a composition and a method for reducing the concentration of selenium in water. Contaminated water is contacted with a kaolinite clay characterized by a removal efficiency for selenatearsenate of at least 40 wt % at ambient temperature. The adsorption process is fast. Following sufficient contact, the water is separated from the kaolinite clay. In a preferred form, the kaolinite clay has high surface acidity.