The Zeolite mined out of Yeoungill, Korea, was used to study the adsorption of C.O.D. in the waste water from the dyeing mill. The experiment was performed batchwise in a 500 ml beaker with 10 gr of adsorbents and 200 ml of waste water.
The waste water was agitated with the stirring speed of 100 rpm at a constant temperature. The amount of C.O.D. disappeared by adsorbent was measured at constant time intervals.
The effect of Zeolite particle size, initial concentration of C.O.D. in water on adsorption were investigated.
The kinetic study showed that the adsorption by Zeolite is known to be controlled by intraparticle diffusion and film diffusion.
Freundlich and Langmuir adsorption isotherms are found to be ploted on the straight line.
The adsorption quantity of C.O.D. on Zeolite at equilibrium is nearly equal to that of granular active carbon in about 10 mg of C.O.D. /gr of adsorbent.
Therefore, the Yeoungill Zeolite could be used as an economic adsorbent in treating the waste water of the dyeing industries.