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Sorption of Arsenic from Drinking Water to Mg(OH)2, Sorrel's Cements, and Zirconium Doped Materials.

DE2003807054

Publication Date	2002
Personal Author	Moore, R. C.; Holt, K.; Zhao, H.; Salas, F.; Hasan, A.; Lucero, D.
Page Count	30
Abstract	It was discovered that MgO or Mg(OH)(sub 2) when it reacts with water is a very strong sorbent for arsenic. Distribution constants, or K(sub d) values, are as high as 1 x 10(sup 6) L/mole. In this work, Mg(OH)(sub 2) and other compounds have been investigated as sorbents for arsenic and other contaminants. This work has resulted in several major accomplishments including: (1) design, construction, and testing of a pressure sand filter to remove Mg(OH)(sub 2) after it has sorbed arsenic from water, (2) stabilization of Mg(OH)(sub 2) as a Sorrel's cement against reaction with carbonate that results in MgCO(sub 3) formation decreasing the efficiency of Mg(OH)(sub 2) to sorb arsenic, and (3) the development of a new, very promising sorbent for arsenic based on zirconium. Zirconium is an environmentally benign material found in many common products such as toothpaste. It is currently used in water treatment and is very inexpensive. In this work, zirconium has been bonded to activated carbon, zeolites, sand and montmorillonite.
Keywords	Arsenic Drinking water Doped materials Cements Activated carbon Sorption Water treatment Zirconium Contamination Magnesium hydroxides Analytical methods Water filtration Chemical removal Detection
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Sandia National Labs., Albuquerque, NM.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200322

Sorption of Arsenic from Drinking Water to Mg(OH)2, Sorrel's Cements, and Zirconium Doped Materials.

Sorption of Arsenic from Drinking Water to Mg(OH)2, Sorrel's Cements, and Zirconium Doped Materials.
DE2003807054

Publication Date	2002
Personal Author	Moore, R. C.; Holt, K.; Zhao, H.; Salas, F.; Hasan, A.; Lucero, D.
Page Count	30
Abstract	It was discovered that MgO or Mg(OH)(sub 2) when it reacts with water is a very strong sorbent for arsenic. Distribution constants, or K(sub d) values, are as high as 1 x 10(sup 6) L/mole. In this work, Mg(OH)(sub 2) and other compounds have been investigated as sorbents for arsenic and other contaminants. This work has resulted in several major accomplishments including: (1) design, construction, and testing of a pressure sand filter to remove Mg(OH)(sub 2) after it has sorbed arsenic from water, (2) stabilization of Mg(OH)(sub 2) as a Sorrel's cement against reaction with carbonate that results in MgCO(sub 3) formation decreasing the efficiency of Mg(OH)(sub 2) to sorb arsenic, and (3) the development of a new, very promising sorbent for arsenic based on zirconium. Zirconium is an environmentally benign material found in many common products such as toothpaste. It is currently used in water treatment and is very inexpensive. In this work, zirconium has been bonded to activated carbon, zeolites, sand and montmorillonite.
Keywords	Arsenic Drinking water Doped materials Cements Activated carbon Sorption Water treatment Zirconium Contamination Magnesium hydroxides Analytical methods Water filtration Chemical removal Detection
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Sandia National Labs., Albuquerque, NM.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200322