The process of removing guaiacol from waste water has been studied in rotating disc columns with diameters of 73
160 and 240mm. By investigating the effect of rotating speed
flow rates of waste water and emulsified liquid
amount of surfactant Span-80
it was found that the main factor affecting the removal of phenol is rotating speed
the optimal rotating speed decreasing with increase of column diameter. The rotating speed was correlated to the column diameter and to the minimal mass transfer unit height for the three column diameters.