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:
Jun. 28, 2019
Applicants:
Mingming Fang, Naperville, IL (US);
Heng Wang, Hoffman Estates, 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); C02F 1/72 (2006.01); C02F 1/76 (2006.01); B01J 20/12 (2006.01); B01J 20/30 (2006.01); B01J 20/28 (2006.01); C02F 1/00 (2006.01); C02F 101/10 (2006.01);
U.S. Cl.
CPC ...
C02F 1/281 (2013.01); B01J 20/12 (2013.01); B01J 20/28061 (2013.01); B01J 20/3014 (2013.01); B01J 20/3085 (2013.01); C02F 1/722 (2013.01); C02F 1/76 (2013.01); C02F 2001/007 (2013.01); C02F 2101/103 (2013.01);
Abstract
The description relates to a composition and a method for reducing the concentration of arsenic in water. Contaminated water is contacted with acid-activated clay characterized by a removal efficiency for arsenic of at least 95 wt %. Following sufficient contact, the water is separated from the acid-activated clay. In preferred form, the acid activated clay is characterized by a BET surface area of at least about 200 m/gram.