Certain surfactants with suitable brine, such as cetyldimethylbetaine with sorbitol, can inhibit agglomeration of ice particles and thus help disperse ice particles in ice/water slurries, and simultaneously reduce the drag of the slurry in pipes. In this study, the amount of cetyldimethylbetaine (surfactant) molecules remaining in the liquid phase of ice/water slurries was measured, and on the basis of these measurements, models explaining how cetyldimethylbetaine molecules affect ice to inhibit agglomeration of ice particles were proposed.