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:
Jan. 24, 2017
Filed:
May. 23, 2013
Applicant:
University of Wyoming, Laramie, WY (US);
Inventors:
Maohong Fan, Ames, IA (US);
Morris D. Argyle, Provo, UT (US);
Mustafa O. M. Sharrad, Western Region, LY;
Assignee:
University of Wyoming, Laramie, WY (US);
Primary Examiner:
Int. Cl.
CPC ...
A62D 3/36 (2007.01); A62D 3/33 (2007.01); A62D 101/08 (2007.01); A62D 101/24 (2007.01); A62D 101/43 (2007.01);
U.S. Cl.
CPC ...
A62D 3/36 (2013.01); A62D 3/33 (2013.01); A62D 2101/08 (2013.01); A62D 2101/24 (2013.01); A62D 2101/43 (2013.01);
Abstract
A method for removing elements, including heavy metals, from fly ash and from fly ash resulting from removal of SO/NOfrom flue gas using NaCO/NaHCO/trona, is described. An aqueous suspension of the fly ash and/or a solution of the leachate from the fly ash is treated with dissolved ferrous compounds, such as FeSO.7HO and/or FeCl.4HO, at a chosen initial acidic pH, and the precipitation of the ferrous ions as the solution basifies sequesters the trace elements.