Abstract
The adsorption isotherms of N-dodecyl-N, N-dimethylglycine were measured for five activated carbons with different pore size distribution. The Langmuir's adsorption equilibrium constant decreased with increasing mean pore diameter. The amount of saturated adsorption increased with pore volume. The effects of electrolytes on the adsorption of amphoteric surfactant resembled that of an anionic surfactant. Removal efficiency increased with cation charge, or ionic radius.
