Use of MgO doped with a divalent or trivalent metal cation for removing arsenic from water
Abstract
Systems and methods for use of magnesium hydroxide, either directly or through one or more precursors, doped with a divalent or trivalent metal cation, for removing arsenic from drinking water, including water distribution systems. In one embodiment, magnesium hydroxide, Mg(OH).sub.2 (a strong adsorbent for arsenic) doped with a divalent or trivalent metal cation is used to adsorb arsenic. The complex consisting of arsenic adsorbed on Mg(OH).sub.2 doped with a divalent or trivalent metal cation is subsequently removed from the water by conventional means, including filtration, settling, skimming, vortexing, centrifugation, magnetic separation, or other well-known separation systems. In another embodiment, magnesium oxide, MgO, is employed, which reacts with water to form Mg(OH).sub.2. The resulting Mg(OH).sub.2 doped with a divalent or trivalent metal cation, then adsorbs arsenic, as set forth above. The method can also be used to treat human or animal poisoning with arsenic.
- Inventors:
- Issue Date:
- Research Org.:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1092981
- Patent Number(s):
- 8507004
- Application Number:
- 12/336,953
- Assignee:
- Sandia Corporation (Albuquerque, NM)
- Patent Classifications (CPCs):
-
A - HUMAN NECESSITIES A61 - MEDICAL OR VETERINARY SCIENCE A61P - SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
- DOE Contract Number:
- AC04-94AL85000
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Moore, Robert C, Holt-Larese, Kathleen C, and Bontchev, Ranko. Use of MgO doped with a divalent or trivalent metal cation for removing arsenic from water. United States: N. p., 2013.
Web.
Moore, Robert C, Holt-Larese, Kathleen C, & Bontchev, Ranko. Use of MgO doped with a divalent or trivalent metal cation for removing arsenic from water. United States.
Moore, Robert C, Holt-Larese, Kathleen C, and Bontchev, Ranko. Tue .
"Use of MgO doped with a divalent or trivalent metal cation for removing arsenic from water". United States. https://www.osti.gov/servlets/purl/1092981.
@article{osti_1092981,
title = {Use of MgO doped with a divalent or trivalent metal cation for removing arsenic from water},
author = {Moore, Robert C and Holt-Larese, Kathleen C and Bontchev, Ranko},
abstractNote = {Systems and methods for use of magnesium hydroxide, either directly or through one or more precursors, doped with a divalent or trivalent metal cation, for removing arsenic from drinking water, including water distribution systems. In one embodiment, magnesium hydroxide, Mg(OH).sub.2 (a strong adsorbent for arsenic) doped with a divalent or trivalent metal cation is used to adsorb arsenic. The complex consisting of arsenic adsorbed on Mg(OH).sub.2 doped with a divalent or trivalent metal cation is subsequently removed from the water by conventional means, including filtration, settling, skimming, vortexing, centrifugation, magnetic separation, or other well-known separation systems. In another embodiment, magnesium oxide, MgO, is employed, which reacts with water to form Mg(OH).sub.2. The resulting Mg(OH).sub.2 doped with a divalent or trivalent metal cation, then adsorbs arsenic, as set forth above. The method can also be used to treat human or animal poisoning with arsenic.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Aug 13 00:00:00 EDT 2013},
month = {Tue Aug 13 00:00:00 EDT 2013}
}
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Works referenced in this record:
In situ formation of phosphate barriers in soil
patent, July 2002
- Moore, Robert C.
- US Patent Document 6,416,252
Arsenic removal in conjunction with lime softening
patent, October 2004
- Khandaker, Nadim R.; Brady, Patrick V.; Teter, David M.
- US Patent Document 6,802,980
Zirconium-modified materials for selective adsorption and removal of aqueous arsenic
patent, November 2004
- Zhao, Hongting; Moore, Robert C.
- US Patent Document 6,824,690
Inorganic ion sorbents
patent, October 2006
- Teter, David M.; Brady, Patrick V.; Krumhansl, James L.
- US Patent Document 7,122,502
Arsenic removal from water
patent, July 2007
- Moore, Robert C.; Anderson, D. Richard
- US Patent Document 7,247,242
Stabilization of toxic metals in a waste matrix and pore water
patent, January 2005
- Chowdhury, Ajit K.; Tickanen, Lane
- US Patent Document 6,843,617
System and method for simultaneous removal of arsenic and fluoride from aqueous solutions
patent-application, August 2002
- Krulik, Gerald; Dick, Paul; Golden, Josh
- US Patent Application 09/894229; 20020113023
Inorganic ion sorbents and methods for using the same
patent, July 2006
- Teter, David M.; Brady, Patrick V.; Krumhansl, James L.
- US Patent Document 7,074,336
Method for removing arsenic or selenium from an aqueous solution containing a substantial background of another contaminant
patent, June 1990
- O'Neill, Gary A.; Novak, Jr., John W.; Martin, Edward S.
- US Patent Document 4,935,146
System for removal of arsenic from water
patent, November 2004
- Moore, Robert C.; Anderson, D. Richard
- US Patent Document 6,821,434
Situ formation of apatite for sequestering radionuclides and heavy metals
patent, July 2003
- Moore, Robert C.
- US Patent Document 6,592,294
In situ remediation process using divalent metal cations
patent, December 2004
- Brady, Patrick V.; Khandaker, Nadim R.; Krumhansl, James L.
- US Patent Document 6,830,695