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A study of the partitioning of haloacetates into cetylpyridinium chloride micelles using semiequilibrium dialysis and ultrafiltration.
MedLine Citation:
PMID:  23313349     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Haloacetic acids, formed in drinking water during disinfection by chlorination, pose significant risks to human health. Semiequilibrium dialysis and ultrafiltration experiments were used to examine the partitioning of the five regulated haloacetic acids (HAA(5)) viz. chloro-, dichloro-, trichloro-, bromo-, and dibromoacetic acids into cetylpyridinium chloride (CPC) micelles across a range of micellar mole fraction, surfactant concentration, and added NaCl conditions. The results of these experiments were successfully correlated using a nonlinear three-site equilibrium model, which combines thermodynamic relations with the Oosawa two-state binding theory, incorporates allowances for nonideality, and includes a parameter to account for haloacetate solubilization. Micellar-enhanced ultrafiltration using CPC provided excellent HAA(5) removal efficiencies of over 98%.
Authors:
Jim D Roach; Mohammed M Premjee; Sivacharan Buddhavarapu; Ahmed Hassib
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-12-19
Journal Detail:
Title:  Journal of colloid and interface science     Volume:  -     ISSN:  1095-7103     ISO Abbreviation:  J Colloid Interface Sci     Publication Date:  2012 Dec 
Date Detail:
Created Date:  2013-1-14     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0043125     Medline TA:  J Colloid Interface Sci     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 Elsevier Inc. All rights reserved.
Affiliation:
Pre-Medical Education Unit, Weill Cornell Medical College-Qatar, PO Box 24144, Doha, Qatar. Electronic address: jar2038@qatar-med.cornell.edu.
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