Quiz 2 Flashcards
Typical trace element markers for emissions of coal-fired power plants are (select all that apply):
A) Mercury (Hg)
B) Chromium (Cr)
C) Zinc (Zn)
D) Aresnic (As)
A) Mercury (Hg)
D) Aresnic (As)
Which of the following mechanisms of collection of particles is effective for removing particles of <1.0 um?
A) Inertial Impaction
B) Interception
C) Diffusion
D) Both Interception and Diffusion
D) Both Interception and Diffusion
Background secondary particulate matter can be found abundant in the following size fraction:
A) 5.8 - 9.0 um
B) 4.7 - 5.8 um
C) .7 - 1.1 um
D) < 0.4
C) .7 - 1.1 um
The larger particles above 2.5 um can be emitted from industrial sources, mostly removed by gravitational settling and they are:
A) Accumulation range
B) Transient nuclei
C) Mechanically generated aerosol range
D) Aitken nuclei range
C) Mechanically generated aerosol range
Which catalyst support has been commonly used for air pollution control and why?
Honey combs due their low pressure drop
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