Abstract
Primary degradation of a linear‐chain sodium dodecyl benzene sulphonate was studied in the laboratory by using water and sediments taken from various points in the Bay of Cádiz and the surrounding tidal lands and marshes. The degradation, carried out in a testing system quite similar to the “river‐die‐away”;, was shown to depend on the granulometric characteristics of the sediment and on the initial surfactant concentration. In most test runs, the biodegradation kinetic equations derived from the process showed good agreement with the non‐structured model of bacterial growth proposed by Velhurst and Pearld & Read1, and subsequently modified by Volterra1.
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