Fig. 2. Experimental moisture content profiles for (a) myristyl alcohol (MA) system, and (b) 7% 1-butanol systems after 24 h (Henry et al., 1999). The soil columns were initially at a uniform moisture content and contained pure water in the left half and surfactant (MA or butanol) in the right half. Experiments were run in duplicate (Test A and B) for each surfactant.

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