Liquid purification or separation – Processes – Ion exchange or selective sorption
Reexamination Certificate
2011-03-22
2011-03-22
Savage, Matthew O (Department: 1776)
Liquid purification or separation
Processes
Ion exchange or selective sorption
C210S691000, C210S911000, C210S914000
Reexamination Certificate
active
07910005
ABSTRACT:
The use of a sulfur-impregnated organoclay provides a mercury or arsenic removal media having increased reactivity, stability, and mercury removal ability. The Hg/As removal media described herein is prepared by impregnating an organophilic clay with elemental (free state) sulfur. Alternatively, the clay can be made organophilic by onium ion reaction prior to or simultaneously with impregnating the organoclay with sulfur.
REFERENCES:
patent: 2531427 (1950-11-01), Hauser
patent: 4033764 (1977-07-01), Colegate et al.
patent: 4094777 (1978-06-01), Sugier et al.
patent: 4911825 (1990-03-01), Roussel et al.
patent: 4960740 (1990-10-01), House et al.
patent: 5366647 (1994-11-01), Gutierrez et al.
patent: 5512526 (1996-04-01), Greco
patent: 5935444 (1999-08-01), Johnson et al.
patent: 5989506 (1999-11-01), Markovs
patent: 6232388 (2001-05-01), Lan et al.
patent: 6376591 (2002-04-01), Lan et al.
patent: 6398951 (2002-06-01), Smith et al.
patent: 6398966 (2002-06-01), Smith et al.
patent: 6403044 (2002-06-01), Litz et al.
patent: 6409924 (2002-06-01), Johnson et al.
patent: 6749757 (2004-06-01), Smith et al.
patent: 6787592 (2004-09-01), Powell et al.
patent: 6793805 (2004-09-01), Didillon et al.
patent: 7288499 (2007-10-01), Lovell et al.
patent: 7510992 (2009-03-01), Wang et al.
patent: 7553792 (2009-06-01), Wang et al.
patent: 2004/0102332 (2004-05-01), Thompson et al.
patent: 2005/0103707 (2005-05-01), Olsta et al.
patent: 2006/0000767 (2006-01-01), Trauger et al.
patent: 2006/0166840 (2006-07-01), Miller
patent: 2006/0273015 (2006-12-01), Pinnavaia et al.
patent: 2006/0286888 (2006-12-01), Olsta et al.
patent: 2007/0059542 (2007-03-01), Olsta et al.
patent: 2007/0119300 (2007-05-01), Yang et al.
patent: 2007/0122327 (2007-05-01), Yang et al.
patent: 2007/0206994 (2007-09-01), Olsta et al.
patent: 810278 (1997-12-01), None
patent: WO-2007064500 (2007-06-01), None
patent: WO-2007149837 (2007-12-01), None
McKimmy, et al., “Trapping of Arsenite by Mercaptopropyl-Functionalized Mesostructured Silica with a Wormhole Framework,” Chem. Commun., pp. 3697-3699 (2005).
Smedley, et al., “A Review of the Source, Behaviour and Distribution of Arsenic in Natural Waters,” Applied Geochemistry, vol. 17, pp. 517-568 (2002).
“Technologies and Costs for Removal of Arsenic From Drinking Water,” EPA 815-P-01-001, United States Environmental Protection Agency Office of Ground Water and Drinking Water, Washington, D.C. (Apr. 1999).
Granite, et al., “Novel Sorbents for Mercury Removal from Glue Gas,” Ind. Eng. Chem. Res., vol. 39, pp. 1020-1029 (2000).
Alptekin, Gokhan. A New Non-carbon Sorbent for Hg Removal from Flue Gases. Paper #139. TDA Research, Inc. of Wheat Ridge, Colorado.
Abraham Robert
Wang Zhen
Amcol International Corporation
Marshall & Gerstein & Borun LLP
Savage Matthew O
LandOfFree
Method for removing mercury and/or arsenic from contaminated... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for removing mercury and/or arsenic from contaminated..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for removing mercury and/or arsenic from contaminated... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2752083