Ms. Chou et Cc. Hsiao, TREATMENT OF STYRENE-CONTAMINATED AIRSTREAM IN BIOTRICKLING FILTER PACKED WITH SLAGS, Journal of environmental engineering, 124(9), 1998, pp. 844-850
This paper reports the result of studies using a biotrickling filter w
ith blast-furnace slag packings (sizes = 2-4 cm and specific surface a
rea = 120 m(2)/m(3)) for treatment of styrene in an airstream. The eff
ects of volumetric styrene loading L, superficial gas velocity U-0 and
liquid recirculation rate V-L on the styrene elimination capacity K,
and the removal efficiency K/L were tested. Variations of styrene conc
entration with packing height as well as rates of nutrient utilization
were also tested. The results show that for L < 30 g/m(3).h, K/L was
nearly independent of U-0 in the range of 29-67 m/h and was independen
t of V-L in the range of 3.84-9.60 m/h. In this range, the rate of sty
rene removal was both reaction and diffusion limited and the reaction
was of zero-order kinetics. For higher loadings, K/L decreased with in
creasing U-0 and increased with increasing V-L,and the system approach
ed the condition of reaction limitation.