The mechanism of nutrients dissolved out of a synthetic composite bead filter material in a biofilter.

In this study, an optimal process to prepare a synthetic material having nutrient (PVA/peat/KNO(3) composite bead) is developed. The equilibrium water-soluble nitrogen content in the composite bead prepared by this process is 8.25-10.

Biofiltration of waste gases containing both ethyl acetate and toluene using different combinations of bacterial cultures.

To investigate the microbial degradation of ethyl acetate and toluene mixtures in biofiltration, three strains were selected, identified and studied in a shake-flask culture, and finally inoculated into biofilters. These strains, namely AC6, TO3 and B5, can degrade different substrates at a different rate. The results showed that competitive inhibition from substrate and microbial community would affect the toluene degradation efficiency.

Water transformation in the media of biofilters controlled by Rhodococcus fascians in treating an ethyl acetate-contaminated airstream.

Biofilters do not provide much water for bacteria to grow. To use them efficiently and properly, it is essential to understand the kinetics of water transformation and to control moisture levels. This study aims to clarify whether the metabolism of microorganisms will improve the water-holding capacity of media or will intensify drying.