Abstract

Biofiltration is a cost-effective and environmentally sustainable technology for the treatment of exhaust gases from a variety of sources. Although the process setup is relative simple, many physical, chemical, and microbiological processes are involved. Microkinetic models attempting to cover all of these processes are often more complex than reliable; on the other hand, many macrokinetic approaches have a tendency to oversimplification. In order to develop a simple and accurate protocol to derive biofilter design criteria from experimental trials, a macrokinetic model based on chemical engineering fundamentals was developed. The model covers first-order kinetics as well as kinetics shifting from first-order at low substrate concentrations to zero-order at elevated concentrations and can be applied to single VOCs and odours as measured by olfactometry.

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