Main Title |
The use of cationic surfactants to modify aquifer materials to reduce the mobility of hydrophobic organic compounds / |
Author |
Westall, John C. ;
Brownawell, B. J. ;
Wagner, J. ;
Chen, H. ;
Westall, J. C.
|
Other Authors |
|
CORP Author |
Oregon State Univ., Corvallis. Dept. of Chemistry. ;State Univ. of New York at Stony Brook. Marine Sciences Research Center.;Robert S. Kerr Environmental Research Lab., Ada, OK. |
Publisher |
U.S. Environmental Protection Agency, Robert S. Kerr Environmental Research Laboratory, |
Year Published |
1994 |
Report Number |
EPA/600-S-94-002; EPA-R-816875; PB95111951 |
Stock Number |
PB95-111951 |
OCLC Number |
31275316 |
Subjects |
Ada Aquifer (Okla) ;
Organic compounds--Environmental aspects ;
Soil absorption and adsorption--Oklahoma ;
Soil pollution--Oklahoma--Measurement ;
Soil pollution--Measurement ;
Oklahoma--Ada Aquifer
|
Additional Subjects |
Aquifers ;
Surfactants ;
Pollution control ;
Adsorption ;
Ion mobility ;
Metals ;
Cations ;
Ion exchange ;
Soil chemistry ;
Surface chemistry ;
Soils ;
Models ;
Chlorobenzenes ;
HOC(Hydrophobic organic compounds) ;
Hydrophobic organic compounds ;
DP(Dodecylpyridinium) ;
DP modified surfaces
|
Internet Access |
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
EHAM |
EPA/600/S-94/002 |
|
Region 1 Library/Boston,MA |
05/25/2016 |
EJBD |
EPA 600-S-94-002 |
c.1-2 |
Headquarters Library/Washington,DC |
07/31/2013 |
ELBD ARCHIVE |
EPA 600-S-94-002 |
In Binder Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
ELBD |
EPA 600-S-94-002 |
|
AWBERC Library/Cincinnati,OH |
04/25/1998 |
EMBD |
EPA/600/S-94/002 |
|
NRMRL/GWERD Library/Ada,OK |
12/28/2001 |
NTIS |
PB95-111951 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
18 pages : illustrations ; 28 cm. |
Abstract |
Cationic surfactants can be used to modify surfaces of soils and subsurface materials to promote sorption of hydrophobic organic compounds (HOC) and retard their migration. Batch and column experiments were performed to investigate these phenomena. The cationic surfactant was dodecylpyridinium (DP); the HOC were chlorobenzene homologs; competing metal ions were Pb(2+), Cd(2+), and Cu(2+); and sorbents were low-organic-carbon aquifer materials (Lula, EPA-12, Borden Sand) and pristine minerals (kaolinite, montmorillonite). The investigation covered three major topics (1) adsorption of DP to particle surfaces; (2) sorption of chlorobenzenes to DP-modified surfaces; and (3) adsortion competition between DP and the metal ions. The adsorption isotherms of DP were distinctly nonlinear, even at very low surface concentrations. A multisite adsorption model was developed to describe adsorption over a wide range of DP, NaCl, and CaCl2 concentrations. Two types of adsorption reactions were found to be significant; exchange of DP with a alkali-metal cation, and adsorption of pyridinium with chloride counter-ion. |
Notes |
Caption title. "August 1994." "EPA/600-S-94-002." Shipping list no.: 1994-0311-P. Includes bibliographical references (pages 17-18). |