AMMONIA GAS REMOVAL CHARACTERISTICS USING BIOFILTER WITH ACTIVATED CARBON-FIBER AS A CARRIER

Activated carbon fiber (ACF) was used as the carrier for a biofilter a nd the removal characteristics of ammonia gas by the ACF biofilter see ded with night soil sludge on a laboratory-scale were investigated. Af ter physical adsorption of the ammonia gas on the ACF at 0.59 g N kg(- 1) dry ACF, biological the removal of ammonia occurred. The removal ca pacity of the ammonia gradually increased and its complete removal was observed up to the load of 1.5 g N kg(-1) dry ACF day(-1) while the m aximum removal capacity was 3.5 g N kg(-1) dry ACF day(-1). Based on a kinetic analysis, the maximum removal rate of ammonia, V-m, obtained was 8.4 g N kg(-1) dry ACF day(-1) and the saturation constant, K-s, w as 26 ppm.