ABSTRACT
Many studies have shown that bioreactors such as packed-bed biofilters can successfully treat a wide range of volatile organic compounds (VOCs).1,2 In most packed-bed biofilters, different mixed, bacterial-dominant populations may develop on the surface of packing materials depending on the composition of gas streams and physicochemical conditions.3 However, these packedbed biofilters are generally sensitive to micro-environmental conditions such as pH, moisture content and salinity.4 In addition, operational problems such
as excess biomass accumulation and biodegradation activity loss make these treatment methods less attractive.3
