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. 31, 2006
Filed:
Dec. 04, 2002
Kenneth S. Price, Zionsville, IN (US);
Joe Kurek, Indianapolis, IN (US);
Kurt Whitfield, Indianapolis, IN (US);
Herbert I. Wissel, Indianapolis, IN (US);
Kenneth S. Price, Zionsville, IN (US);
Joe Kurek, Indianapolis, IN (US);
Kurt Whitfield, Indianapolis, IN (US);
Herbert I. Wissel, Indianapolis, IN (US);
Heritage Environmental Services, LLC, Indianapolis, IN (US);
Abstract
A process for the stabilization of metal bearing waste is provided that is based upon the discovery that landfills have anaerobic environments. This process includes adjusting the pH of the waste and adding a sulfide containing reducing agent to the waste to achieve a reducing environment. In one embodiment, electric arc furnace dust is stabilized for landfill disposal. Also provided is a method for a determination of landfilled waste leachability. This method is performed under conditions that simulate the chemical characteristics of landfills. In one embodiment, stabilized metal bearing waste is deoxygenated and a simulated leachate is prepared under anaerobic conditions.