Method of removing arsenic and other anionic contaminants from contaminated water using enhanced coagulation
Abstract
An improved water decontamination process comprising contacting water containing anionic contaminants with an enhanced coagulant to form an enhanced floc, which more efficiently binds anionic species (e.g., arsenate, arsenite, chromate, fluoride, selenate, and borate, and combinations thereof) predominantly through the formation of surface complexes. The enhanced coagulant comprises a trivalent metal cation coagulant (e.g., ferric chloride or aluminum sulfate) mixed with a divalent metal cation modifier (e.g., copper sulfate or zinc sulfate).
- Inventors:
- Issue Date:
- Research Org.:
- Sandia National Lab. (SNL-CA), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1175997
- Patent Number(s):
- 7138063
- Application Number:
- 11/351,365
- Assignee:
- Sandia Corporation
- Patent Classifications (CPCs):
-
C - CHEMISTRY C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE C02F - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- 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
Teter, David M., Brady, Patrick V., Krumhansl, James L., and Khandaker, Nadim R. Method of removing arsenic and other anionic contaminants from contaminated water using enhanced coagulation. United States: N. p., 2006.
Web.
Teter, David M., Brady, Patrick V., Krumhansl, James L., & Khandaker, Nadim R. Method of removing arsenic and other anionic contaminants from contaminated water using enhanced coagulation. United States.
Teter, David M., Brady, Patrick V., Krumhansl, James L., and Khandaker, Nadim R. Tue .
"Method of removing arsenic and other anionic contaminants from contaminated water using enhanced coagulation". United States. https://www.osti.gov/servlets/purl/1175997.
@article{osti_1175997,
title = {Method of removing arsenic and other anionic contaminants from contaminated water using enhanced coagulation},
author = {Teter, David M. and Brady, Patrick V. and Krumhansl, James L. and Khandaker, Nadim R.},
abstractNote = {An improved water decontamination process comprising contacting water containing anionic contaminants with an enhanced coagulant to form an enhanced floc, which more efficiently binds anionic species (e.g., arsenate, arsenite, chromate, fluoride, selenate, and borate, and combinations thereof) predominantly through the formation of surface complexes. The enhanced coagulant comprises a trivalent metal cation coagulant (e.g., ferric chloride or aluminum sulfate) mixed with a divalent metal cation modifier (e.g., copper sulfate or zinc sulfate).},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Nov 21 00:00:00 EST 2006},
month = {Tue Nov 21 00:00:00 EST 2006}
}
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