We have examined microbubble scavenging of four different types of lipid materials (oleic acid, stearic acid, triolein, and cholesterol) from seawater. These experiments have covered a range of bubble diameters (approximately 200 to 750 μm), bubble Reynolds numbers (approximately 10 to 150), and bubble void fractions (approximately 0.08% to 1.3%). We present here a model which synthesizes the experimental results. The model is based on turbulent diffusion to a single bubble coupled with experimentally determined adsorption kinetics. We have also introduced into the model a factor to account for the dependency of the scavenging observations on bubble void fraction. The introduction of this factor can be anticipated, because the flow hydrodynamics of single bubbles and bubble plumes are quite different. However, these differences are not well enough understood at this time to permit a thorough theoretical explanation of the void fraction factor. ¿ American Geophysical Union 1994