Abstract
This paper presents fundamental and theoretical aspects of biological waste gas treatment technologies as well as examples of applications to di†erent compounds. The three most widely used technologies are described, namely bio- -ltration, bioscrubbing and trickling bio-ltration, focusing more extensively on bio-ltration which is the most studied and most extensively used process. A description of the di†erent technologies from technological and economic points of view, including an analysis of models used in waste gas biotreatment is given. Results presented in the literature concerning the removal of aliphatic, aromatic and mixtures of contaminants are reviewed. Carrier materials, inocula selected and alternatives proposed for regulating moisture content, pH values or for con- trolling pressure drop are considered. New technologies and reactor design studied at laboratory-scale are mentioned. 1998 SCI ( J. Chem. T echnol. Biotechnol. 72, 303E319 (1998)
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