Sediment- and saturated-soil-associated reactions involving an anionic surfactant (dodecylsulfate). 1. Precipitation and micelle formation

The anionic surfactant dodecylsulphate, in concentrations in the range of the critical micelle concentration, was used to study interactions with soil and sediment media components. The recovery of aqueous solutions of dodecylsulphate from medium slurries was depended on precipitation, micellization and micellar counter ion binding. Precipitation boundaries were estimated using mechanistic and semi-empirical mass action equations and their associated constants. The aqueous micelle and monomer dodecylsulphate concentrations were also found using these equations together with the material balance equations. There are 37 references.