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Title: Arsenic removal from water

Abstract

Methods for removing arsenic from water by addition of inexpensive and commonly available magnesium oxide, magnesium hydroxide, calcium oxide, or calcium hydroxide to the water. The hydroxide has a strong chemical affinity for arsenic and rapidly adsorbs arsenic, even in the presence of carbonate in the water. Simple and commercially available mechanical methods for removal of magnesium hydroxide particles with adsorbed arsenic from drinking water can be used, including filtration, dissolved air flotation, vortex separation, or centrifugal separation. A method for continuous removal of arsenic from water is provided. Also provided is a method for concentrating arsenic in a water sample to facilitate quantification of arsenic, by means of magnesium or calcium hydroxide adsorption.

Inventors:
 [1];  [2]
  1. Edgewood, NM
  2. Albuquerque, NM
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
913102
Patent Number(s):
7,247,242
Application Number:
10/039,947
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, and Anderson, D Richard. Arsenic removal from water. United States: N. p., 2007. Web.
Moore, Robert C, & Anderson, D Richard. Arsenic removal from water. United States.
Moore, Robert C, and Anderson, D Richard. 2007. "Arsenic removal from water". United States. https://www.osti.gov/servlets/purl/913102.
@article{osti_913102,
title = {Arsenic removal from water},
author = {Moore, Robert C and Anderson, D Richard},
abstractNote = {Methods for removing arsenic from water by addition of inexpensive and commonly available magnesium oxide, magnesium hydroxide, calcium oxide, or calcium hydroxide to the water. The hydroxide has a strong chemical affinity for arsenic and rapidly adsorbs arsenic, even in the presence of carbonate in the water. Simple and commercially available mechanical methods for removal of magnesium hydroxide particles with adsorbed arsenic from drinking water can be used, including filtration, dissolved air flotation, vortex separation, or centrifugal separation. A method for continuous removal of arsenic from water is provided. Also provided is a method for concentrating arsenic in a water sample to facilitate quantification of arsenic, by means of magnesium or calcium hydroxide adsorption.},
doi = {},
url = {https://www.osti.gov/biblio/913102}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2007},
month = {7}
}