Main Title |
Adsorption of Organic Cations to Natural Materials. |
Author |
Brownawell, B. J. ;
Chen, H. ;
Collier, J. M. ;
Westall, J. C. ;
|
CORP Author |
Oregon State Univ., Corvallis. Dept. of Chemistry.;Robert S. Kerr Environmental Research Lab., Ada, OK. |
Publisher |
c1990 |
Year Published |
1990 |
Report Number |
EPA-R-814501; EPA/600/J-90/258; |
Stock Number |
PB91-144881 |
Additional Subjects |
Pyridinium compounds ;
Cations ;
Clay minerals ;
Adsorption ;
Sorbents ;
Isotherms ;
Water ;
Solutions ;
Ion exchange ;
Reprints ;
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB91-144881 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
10p |
Abstract |
The factors that control the extent of adsorption of amphiphilic organic cations on environmental and pristine surfaces have been studied. The sorbents were kaolinite, montmorillonite, two aquifer materials, and a soil; solutions contained various concentrations of NaCl and CaCl2, at various pH values. The distribution ratio of the dodecylpyridinium was strongly dependent on the nature and concentration of the inorganic cations in solution, but virtually independent of solution pH. The adsorption isotherms were distinctly nonlinear, even at very low surface concentrations of organic cations. A multisite adsorption model has been developed to describe adsorption over a wide range of dodecylpridinium, NaCl, and CaCl2 concentrations. Two types of adsorption reactions were found to be significant: exchange of pyridinium with an alkali-metal cation, and adsorption of pyridinium with chloride counterion. (Copyright (c) by the American Chemical Society, 1990.) |
Supplementary Notes |
Pub. in Environmental Science and Technology, v24 n8 p1234-1241 1990. Sponsored by Robert S. Kerr Environmental Research Lab., Ada, OK. |
NTIS Title Notes |
Journal article. |
Title Annotations |
Reprint: Adsorption of Organic Cations to Natural Materials. |
Category Codes |
99F; 68D |
NTIS Prices |
PC A02/MF A01 |
Primary Description |
600/15 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
109129871 |
Origin |
NTIS |
Type |
CAT |