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:
Jul. 08, 2003
Filed:
Sep. 29, 1999
Youssef El-Shoubary, North Brunswick, NJ (US);
Rudy Maes, Easton, PA (US);
Subash C. Seth, Watchung, NJ (US);
Merck & Co., Inc., Rahway, NJ (US);
Abstract
An adsorption powder for removing mercury and other metals, dioxins, furans and other organic compounds from metal- and organic compound-comtaminated soil and method therefor. The adsorption powder may be characterized as containing from about 1 to 97% of carbon, from about 1 to 97% of calcium hydroxide, from about 1 to 97% of cupric chloride, and from about 1 to 60% of KI impregnated carbon. The method of the invention may be characterized by the steps of: a) placing metal- and organic compound-contaminated soil in a kiln/drum; b) heating the kiln/drum to form a gas, wherein the gas contains the metal- and organic contaminated soil; c) transferring the gas to an exhaust cleaning unit/afterburner and the soil to a cooling unit; d) heating the gas in the cleaning unit/afterburner; e) cooling the gas and adding the adsorption powder thereto to produce a powder-containing gas component; f) transferring the powder-containing gas component to a baghouse; and g) releasing the substantially mercury-free gaseous component to the atmosphere.