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Title: 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.:
SNL-A (Sandia National Laboratories, Albuquerque, NM (United States))
Sponsoring Org.:
USDOE
OSTI Identifier:
1092981
Patent Number(s):
8,507,004
Application Number:
12/336,953
Assignee:
Sandia Corporation (Albuquerque, NM)
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 = {2013},
month = {8}
}

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