Study on ammonia nitrogen removal from wastewater by model-Ce zeolite adsorbent

The new-style Ce-modified zeolite adsorbent was prepared by modifying zeolite with cerium.The results showed that the adsorption capacity of Ce-modified for ammonia nitrogen was better than the La-modified and La-Ce compound modified zeolite.The adsorption rate of the ammonia nitrogen removal can reach 80.23% under the following conditions:the dosage of adsorbent is 2 g/L,the pH value of the solution is from 4 to 6 and the adsorption time is over 2.5 h,adsorption capacity of ammonia nitrogen decreases less than 7% after the absorbent regenerated 6 times,which meant a good stability of Ce-modified zeolite adsorbent.