INFLUENCE OF THERMAL AND NON-THERMAL EFFECTS OF ULTRASOUND ON ISOTHERMS OF PHENOL ON NKA II RESIN*

Adsorption equilibrium experiments of phenol on the NKA II resin are separately conducted in the presence and absence of ultrasound at ambient temperature. The isotherm of phenol on the polymer adsorbent in the presence of ultrasonic field is firstly reported. Results indicated that the isotherm of phenol determined in the presence of ultrasound is lower than that in the absence of ultrasound. In addition, experiments also show that the use of ultrasound to the adsorption system of the phenol aqueous solution and NKA II resin could cause the rising of the temperature of the system in the order of 6 0C. The effect of ultrasound on the isotherm of the phenol on the NKA II resin mostly ascribes to the thermal effect and the non-thermal effect of ultrasonic field, and the role of the later is greater than that of the former.