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Title: Zirconium-modified materials for selective adsorption and removal of aqueous arsenic

Abstract

A method, composition, and apparatus for removing contaminant species from an aqueous medium comprising: providing a material to which zirconium has been added, the material selected from one or more of zeolites, cation-exchangeable clay minerals, fly ash, mesostructured materials, activated carbons, cellulose acetate, and like porous and/or fibrous materials; and contacting the aqueous medium with the material to which zirconium has been added. The invention operates on all arsenic species in the form of arsenate, arsenite and organometallic arsenic, with no pretreatment necessary (e.g., oxidative conversion of arsenite to arsenate).

Inventors:
;
Issue Date:
Research Org.:
Sandia National Lab. (SNL-CA), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1175155
Patent Number(s):
6824690
Application Number:
10/269,596
Assignee:
Sandia Corporation
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Zhao, Hongting, and Moore, Robert C. Zirconium-modified materials for selective adsorption and removal of aqueous arsenic. United States: N. p., 2004. Web.
Zhao, Hongting, & Moore, Robert C. Zirconium-modified materials for selective adsorption and removal of aqueous arsenic. United States.
Zhao, Hongting, and Moore, Robert C. Tue . "Zirconium-modified materials for selective adsorption and removal of aqueous arsenic". United States. https://www.osti.gov/servlets/purl/1175155.
@article{osti_1175155,
title = {Zirconium-modified materials for selective adsorption and removal of aqueous arsenic},
author = {Zhao, Hongting and Moore, Robert C.},
abstractNote = {A method, composition, and apparatus for removing contaminant species from an aqueous medium comprising: providing a material to which zirconium has been added, the material selected from one or more of zeolites, cation-exchangeable clay minerals, fly ash, mesostructured materials, activated carbons, cellulose acetate, and like porous and/or fibrous materials; and contacting the aqueous medium with the material to which zirconium has been added. The invention operates on all arsenic species in the form of arsenate, arsenite and organometallic arsenic, with no pretreatment necessary (e.g., oxidative conversion of arsenite to arsenate).},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2004},
month = {11}
}

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Works referenced in this record:

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Removal of Arsenite from Aqueous Solutions by Anionic Clays
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