ABSTRACT
Emission of sulfur pollutants have been the main target of biological air treatment methods since its first reports in the ’30s. Among these compounds hydrogen sulfide (H2S) has been the most studied followed by carbon disulfide (CS2) and the organic sulfides such as mercaptans, di methyl sulfide, di methyl disulfide and finally the oxidized species such as sulfur dioxide emitted from combustion processes. Research and applications have rapidly evolved in the past two decades from the traditional biofilters packed with natural supports to controlled biotrickling filters operating in a wide range of conditions adapted to the specific applications and with very short residence times.
