Adsorption of Al3+ cations onto the surface of lauryl sulfate micelles causes their flocculation. The resulting flocs have pollutant-sequestering properties which have never been observed in the precipitates of other Al3+ surfactant salts or other metal lauryl sulfate salts. In this paper the removal of the pesticide 2,4-dichlorophenoxyacetic acid (2,4-D) is presented as an example of the application of this phenomenon, which will be called thereafter adsorptive micellar flocculation (AMF). The results show that AMF is more effective than expected from the octanol/water partition coefficient of the solute, and the kinetics is very fast (less than 2 min for equilibrium). 2,4-D seems to bind itself to micelle-bound Al3+ following a Guoy−Chapman−Stern isotherm. The shape of the isotherm suggests that the surface potential of the micellar flocculate increases at higher surface concentrations of the pollutant on the floc. This is confirmed by a slight disruption of the micellar flocculation by pollutant effect. AMF seems potentially valuable for the development of intensive surfactant-based environmental technologies, as the flocs can be easily filtered and, by a variety of inexpensive methods, redissolved and regenerated providing a fresh adsorption substrate.