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:
Mar. 26, 2013
Filed:
Mar. 25, 2011
Ronald Ray Landreth, Mantua, OH (US);
Sidney G. Nelson, Jr., Hudson, OH (US);
Yinzhi Zhang, Baton Rouge, LA (US);
Qunhui Zhou, Baton Rouge, LA (US);
Christopher J. Nalepa, Zachary, LA (US);
Ronald Ray Landreth, Mantua, OH (US);
Sidney G. Nelson, Jr., Hudson, OH (US);
Yinzhi Zhang, Baton Rouge, LA (US);
Qunhui Zhou, Baton Rouge, LA (US);
Christopher J. Nalepa, Zachary, LA (US);
Albemrle Corporation, Baton Rouge, LA (US);
Abstract
Mercury adsorbed from combustion gas by activated carbon can be sequestered in concrete containing air-entraining admixtures. The activated carbon may be made by providing a carbon char made from coconut shell, wood, or lignite that was activated by a method selected from the group consisting of activating with steam, activating with CO, activating in an environment containing free oxygen, and combinations thereof to provide an activated carbon with an Acid Blue 80 Index of less than about 30 milligrams per gram of carbon. The activated carbon may be injected into a combustion gas stream containing fly ash and mercury and may then be removed with fly ash from the gas stream. The resulting composition may be used as a partial substitute for cement in air-entrained concretes.