The purpose of this study is to estimate the performance of various biofilter media using ammonia. The results can be summarized as follows: 1) The removal of ammonia using various biofilter media was performed, and inorganic media was proved to be better than the organic media. 2) From the inorganic media, fibril form was most superior. 3) Because fibril form is expensive, PU was determined to be the optimum biofiler media for ammonia removal.