Sediment- and saturated-soil-associated reactions involving an anionic surfactant (dodecylsulfate). 1. Precipitation and micelle formation. [Dodecyl sulfate]
- Environmental Protection Agency, Athens, GA (United States)
- Technology Applications Inc., Athens, GA (United States)
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 between micellar, medium, and dissolved aqueous phases.
- OSTI ID:
- 5003672
- Journal Information:
- Environmental Science and Technology; (United States), Vol. 25:6; ISSN 0013-936X
- Country of Publication:
- United States
- Language:
- English
Similar Records
Sediment- and saturated-soil-associated reactions involving an anionic surfactant (dodecylsulfate). 2. Partition of PAH compounds among phases. [Dodecyl sulfate]
Sediment- and saturated-soil-associated reactions involving an anionic surfactant (dodecylsulfate). 2. Partition of PAH compounds among phases
Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
SURFACTANTS
SOIL CHEMISTRY
ANIONS
AQUEOUS SOLUTIONS
CALCIUM
CATIONS
COMPUTER PROGRAM DOCUMENTATION
EQUATIONS
FORTRAN
MAGNESIUM
MICELLAR SYSTEMS
MONOMERS
PH VALUE
POLYCYCLIC AROMATIC HYDROCARBONS
PRECIPITATION
QUALITATIVE CHEMICAL ANALYSIS
REACTION KINETICS
SLURRIES
SODIUM
SOILS
SOLVATION
SOLVENT PROPERTIES
SULFATES
THEORETICAL DATA
ALKALI METALS
ALKALINE EARTH METALS
AROMATICS
CHARGED PARTICLES
CHEMICAL ANALYSIS
CHEMISTRY
DATA
DISPERSIONS
ELEMENTS
HYDROCARBONS
INFORMATION
IONS
KINETICS
METALS
MIXTURES
NUMERICAL DATA
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PROGRAMMING LANGUAGES
SEPARATION PROCESSES
SOLUTIONS
SULFUR COMPOUNDS
SUSPENSIONS
540220* - Environment
Terrestrial- Chemicals Monitoring & Transport- (1990-)
400201 - Chemical & Physicochemical Properties