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Title: Arsenic removal from water

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.
Authors:
 [1] ;  [2]
  1. (Edgewood, NM)
  2. (Albuquerque, NM)
Publication Date:
OSTI Identifier:
913102
Report Number(s):
7,247,242
US patent application 10/039,947
DOE Contract Number:
AC04-94AL85000
Resource Type:
Patent
Research Org:
Sandia National Laboratories (SNL-NM), Albuquerque, NM
Sponsoring Org:
United States Department of Energy
Country of Publication:
United States
Language:
English