Main Title |
Sediment- and Saturated-Soil-Associated Reactions Involving an Anionic Surfactant (Dodecylsulfate). 1. Precipitation and Micelle Formation. |
Author |
Jafvert, C. T. ;
Heath, J. K. ;
|
CORP Author |
Environmental Research Lab., Athens, GA. ;Technology Applications, Inc., Athens, GA. |
Publisher |
c1991 |
Year Published |
1991 |
Report Number |
EPA/600/J-91/151; |
Stock Number |
PB91-219071 |
Additional Subjects |
Surfactants ;
Sediments ;
Soil contamination ;
Pollution control ;
Micellar systems ;
Land pollution control ;
Water pollution control ;
Solubility ;
Sorption ;
Precipitation(Chemistry) ;
Ion exchanging ;
Aromatic polyclic hydrocarbons ;
Experimental design ;
Reprints ;
Dodecylsulfates ;
Activity coefficients ;
Calcium dodecylsulfate ;
Sodium dodecylsulfate ;
Magnesium dodecylsulfate
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB91-219071 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
10p |
Abstract |
In assessing the possible removal of contaminants from soils or sediments by surfactant solutions, the need also arises to elucidate interactions between the surfactants and the components of soils and sediments. Interactions of the anionic surfactant dodecylsulfate (DS) with soil and sediment (medium) components were examined at DS concentrations in the range of the critical micelle concentration (cmc). Experiments involving either the variation in DS (0.1-40 mM) or in medium concentration (0.04-0.36 g/mL for six media) demonstrate the importance of precipitation, micellization, and micellar counterion binding in determining the recovery of aqueous DS from medium slurries. Mechanistic and semiempirical mass action equations, and their associated constants, describing these phenomena in well-defined solutions, along with the necessary material balance equations, permit the calculation of precipitation boundaries. Calculated precipitation boundaries were compared to experimental results. These equations also allow the calculation of the aqueous micelle and monomer DS concentrations. A similar methodology to calculate the aqueous micelle concentration was applied in the subsequent study to quantitatively assess the distribution of PAH compounds among micellar, medium, and dissolved aqueous phases. |
Supplementary Notes |
Pub. in Environmental Science and Technology, v25 n6 p1031-1038 Jun 91. See also PB91-219089. Prepared in cooperation with Technology Applications, Inc., Athens, GA. |
NTIS Title Notes |
Journal article. |
Title Annotations |
Reprint: Sediment- and Saturated-Soil-Associated Reactions Involving an Anionic Surfactant (Dodecylsulfate). 1. Precipitation and Micelle Formation. |
Category Codes |
68; 68D; 99F |
NTIS Prices |
PC A02/MF A01 |
Primary Description |
600/01 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
126923631 |
Origin |
NTIS |
Type |
CAT |