In surfactant-enhanced carbon regeneration, a concentrated surfactant solution is passed over spent activated carbon to desorb the solutes in an in-situ process. The solutes solubilize into micelles in the regenerant solution. Residual adsorbed surfactant can be removed by a water flush. In this study, phenol is the solute and sodium dodecyl sulfate is the anionic surfactant used. Previous studies have measured the ability of the regenerant to remove the solute from the carbon. This study presents the breakthrough curves for subsequent adsorption cycles following the regeneration. The reduction of the effective carbon adsorption capacity is less if a higher regenerant concentration of surfactant, more pore volumes of regenerant, or more pore volumes of water flush solution are used. Effective adsorption capacities of over 50% of that on virgin carbon were observed on regenerated carbon.