[Influence factors of treating waste gas containing benzene and toluene with fungi-biofilter].
Used a two-stage bench-scale temperature adjustable biofilter, biological treatment of medium and high concentration waste benzene and toluene vapor was investigated. The inlet vapor concentration (c(i)) was 0.9 - 5.0 g/m3. The results show that the biofilter can obtained good performance at 30 - 40 degrees C, and at 32.8 degrees C for benzene and toluene, the maximum elimination capacity (EC) of 136 g/(m3 x h) and 150 g/(m3 x h) is obtained at an inlet loading of 673.5 g/(m3 x h) and 665.0 g/(m3 x h), respectively. High media moisture is adverse to the biofilter performance. The optimum moisture for the biofilter is about 45% and the biofilter can obtain good performance at the moisture ranging from 40% to 50%. With the biofilter operation, pressure drop is increasing from 18 Pa to 39 Pa and leachate is changing from colorless to yellow, and these phenomena show that bioaccumulation is existent.
Cao
Xiao-Qiang
XQ
School of Environmental & Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China. xiaoqiangcao@126.com
Huang
Xue-Min
XM
Ma
Guang-Da
GD
D000393:Air Pollutants / Q000737:chemistry / Q000302:isolation & purification* / Q000378:metabolism; D000397:Air Pollution / Q000517:prevention & control; D001554:Benzene / Q000737:chemistry / Q000302:isolation & purification* / Q000378:metabolism; D001673:Biodegradation, Environmental; D018441:Biofilms; D019149:Bioreactors / Q000382:microbiology; D005374:Filtration / Q000295:instrumentation; D005658:Fungi / Q000378:metabolism / Q000502:physiology*; D007220:Industrial Waste / Q000517:prevention & control; D013696:Temperature; D014050:Toluene / Q000737:chemistry / Q000302:isolation & purification* / Q000378:metabolism; D014835:Volatilization
D000393:Air Pollutants; D007220:Industrial Waste; D014050:Toluene; D001554:Benzene