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:
Oct. 11, 2011
Filed:
May. 16, 2007
Meredith B. Gustafsson, Beaumont, TX (US);
Bal K. Kaul, Fairfax, VA (US);
Brian S. Fox, Mullica Hill, NJ (US);
David A. Masciola, Alexandria, VA (US);
Bowornsak Wanichkul, Bangkok, TH;
Meredith B. Gustafsson, Beaumont, TX (US);
Bal K. Kaul, Fairfax, VA (US);
Brian S. Fox, Mullica Hill, NJ (US);
David A. Masciola, Alexandria, VA (US);
Bowornsak Wanichkul, Bangkok, TH;
ExxonMobil Research & Engineering Company, Annandale, NJ (US);
Abstract
A method for removing ionic, organic and elemental mercury from aqueous streams such as wastewater streams from hydrocarbon processing. The method comprises four primary removal steps. First, a mercury precipitant is added to the stream to convert dissolved ionic species of mercury water-insoluble form. The majority of these precipitated solids, as well as other forms of particulate mercury, are subsequently removed by means of gas flotation. Following the flotation step, additional particulate and precipitated ionic mercury removal is accomplished with media filtration and finally, activated carbon acts to remove the remaining dissolved ionic mercury species as well as elemental and organic forms of mercury.