The results of thermal regeneration of activated charcoal at 100300C at various initial concentrations of alcohol are presented in Fig. 6. For c0 = 1500 mg l1, the alcohol concentration in the regenerate reached 53 g l1, and for c0 = 800 mg l1, 25 g l1. The highest content of alcohol in the regenerate is reached at the beginning of charcoal calcination and at the process completion. This can be explained by the fact that, at the beginning of regeneration, water and alcohol molecules weakly bonded by sorption forces vaporize at approximately 100C. By process completion at 300C, molecules tightly bonded by adsorption interactions are released.