Basics Flashcards
1
Q
What is filtration?
A
Any contrivance or porous substance through which liquid or gas is passed to remove impurities
2
Q
What is a surface filter?
A
Acts like a sieve
3
Q
What is a depth filter?
A
Acts like a sponge - cake filter
4
Q
What are advantages of surface filters?
A
Easy to use
Versatile or single use applications
specific particle sizes may be filtered
5
Q
What are disadvantages of depth filters?
A
Need to use filteraids
Saturation can cause bleed through
Takes time to regenerate
6
Q
What are some advantages to cross flow filtration?
A
Doesn’t use DE
Longer shelf life of materials
Filtration tubes are more environmentally friendly
7
Q
What are some pre filtration clarifying techniques?
A
Increased aging time
Fining agents
Centrifuging
