Performance and kinetics of rotating drum biofilter aerobic simultaneous purifying SO and NO.

The rotating drum biofilter (RDB) was investigated as a biological process for purifying SO and NO. After 25 days of film hanging, the inlet concentration was less than 2800 mg·m, and the NO inlet concentration was less than 800 mg·m, with greater than 90% desulphurisation and denitration efficiency. and were the dominant bacteria in desulphurisation, while were the dominant bacteria in denitrification.

[Degradation of styrene by coupling ultraviolet and biofiltration].

Purification of styrene by ultraviolet (UV)-biofiltration was studied in this paper. The light source and the biofilm carrier were ozone producing lamp at 185 nm and the peat, palm fiber, porous acticarbon, respectively. Styrene inlet concentration was controlled between 320-583 mg x m(-3), and the removal efficiency remained above 95% after stabilization.

Dynamic model for nitric oxide removal by a rotating drum biofilter.

To illustrate the process of nitric oxide (NO) denitrifying removal by a novel rotating drum biofilter (RDB), a dynamic model has been developed and further validated. Based on the mass component profile of NO at the gas-liquid interface combined with a Monod kinetic equation, the model was used to depict the mass transfer-reaction process of NO in RDB, focusing on the concentration distribution of NO in the gas, liquid, and biofilm phases. The NO distribution equation on the biofilm carrier was thereby achieved, as well as a dynamic model for NO elimination in the test system.

[Microbial diversity analysis in rotating drum biofilter for nitric oxide denitrifying removal].

PCR-DGGE was applied to analyze the microbial communities in rotating drum biofilter (RDB) for nitric oxide denitrifying removal under anaerobic conditions. The 16S rRNA genes (V3 region) were amplified with two universal primers (338F-GC and 518R). These amplified DNA fragments were separated by parallel DGGE.