Filter aids like asbestos, kieselguhr, diatomaceous earth etc. are used to increase the porosity of the final filter cake & reducing the cake resistance during filtration. Filter aid is
A. Added to the feed slurry
B. Precoated on the filter medium prior to filtration
C. Separated from the cake by dissolving solids or by burning it off
D. All of the above
Answer: Option D
This Question Belongs to Chemical Engineering >> Mechanical Operations
Related Questions on Mechanical Operations
A. Rittinger's law
B. Kick's law
C. Bond's law
D. None of these
Traces of solids are removed from, liquid in a
A. Classifier
B. Clarifier
C. Sparkler filter
D. Rotary vacuum filter
Which of the following is not categorised as a "mechanical operation"?
A. Agitation
B. Filtration
C. Size enlargement
D. Humidification
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