Compounds interaction on the biodegradation of butanol mixture in a biofilter.

Compounds interaction on the biodegradation of n-butanol and sec-butanol mixture in a composite bead biofilter was investigated. The biodegradation rate of compounds in the exponential growth phase and stationary phase for the single compound and two compounds mixing systems was determined. The microbial growth rate and biochemical reaction rate of two compounds decreased with increasing compound inlet concentration for the single compound system.

Compounds interaction on the biodegradation of acetone and methyl ethyl ketone mixture in a composite bead biofilter.

Compounds interaction on the biodegradation of acetone and methyl ethyl ketone (MEK) mixture in a composite bead biofilter was investigated. The biodegradation rate of two compounds in the exponential growth phase and stationary phase for the single compound and two compounds mixing systems was determined. The microbial growth rate and biochemical reaction rate of biodegraded two compounds was inhibited at higher compound inlet concentration for the single compound system.

Biofiltration of ethyl acetate and amyl acetate using a composite bead biofilter.

Biodegradation kinetic behaviors of ethyl acetate and amyl acetate in a composite bead biofilter were investigated. The composite bead was the spherical PVA/peat/KNO3/GAC composite bead which was prepared in our previous works. Both microbial growth rate and biochemical reaction rate were inhibited at higher inlet concentration.

Kinetic characteristics of n-butyl alcohol and iso-butyl alcohol in a composite bead air biofilter.

Kinetic characteristics of n-butyl alcohol and iso-butyl alcohol in a composite bead biofilter were investigated. The microbial growth rate of n-butyl alcohol was greater than that of iso-butyl alcohol in the average inlet concentration range of 50-300 ppm. The microbial growth rate was inhibited at higher inlet concentration, and the inhibitive effect in the concentration range of 50-150 ppm was more pronounced than that in the concentration range of 150-300 ppm.

Biofiltration of ketone compounds by a composite bead biofilter.

In this study, the biochemical kinetic behaviors of ketone compounds in a composite bead biofilter were investigated. Both microbial growth rate kg and biochemical reaction rate kd would be inhibited at higher average inlet concentration. For the microbial growth process, the inhibitive effect was the least pronounced for acetone and the order of kg value was MEK>MIPK>acetone in the average inlet concentration range of 100-150 ppm.

Biochemical kinetic behaviors between n-butyl acetate and composite bead in biofilter.

In this study, the kinetic behaviors between n-butyl acetate and composite bead were investigated. Both microbial growth rate and biochemical reaction rate would be inhibited with increasing average inlet concentration. The order of the inhibitive effect, which resulted from increased average inlet concentration for four operation temperatures, was 30>35>40>25 degrees C.

Kinetic behaviors between acetone and composite bead in biofilter.

In this study, the kinetic behaviors between acetone and composite bead were investigated. The microbial growth rate decreased with increasing average inlet concentration and increased with increasing operation temperature at average inlet concentration ranging from 50 to 300 ppm and operation temperature ranging from 30 to 40 degrees C. The microbial growth rate would be inhibited with increasing average inlet concentration, and the inhibitive effect was more pronounced at higher operation temperature.

A process to prepare a synthetic filter material containing nutrients for biofiltration.

In this study, an optimal process to prepare a synthetic filter material (poly(vinyl alcohol) (PVA)/peat/KNO(3) composite bead) containing nutrients was developed for biofiltration. The optimal preparing condition was that each of the peat and PVA aqueous solutions contains 6.4 g KNO(3) and the nitrogen content in the boric and phosphate aqueous solutions must retain higher than 3.

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.