This set of Bioseparation Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Membrane Equipment”.
1. Membranes are fixed within a device and is known as ____________
a) Membrane
b) Module
c) Tube
d) Plate
View Answer
Explanation: Membrane modules are used to handle the membrane in the fixed position so as to support the process of separation without movement of the membrane in any direction.
2. There are ___________ types of modules used for supporting the membrane for separation process.
a) 5
b) 4
c) 3
d) 2
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Explanation: There are five types of modules and they are stirred cell module, flat sheet tangential flow module, tubular membrane module, spiral wound membrane module and hollow fiber membrane module.
3. In the stirred cell module, the _________ is fitted at the bottom.
a) flat sheet
b) spiral sheet
c) tube
d) tank
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Explanation: A stirred tank is fitted with the membrane disc at the bottom of the membrane and the disc is fixed in the plate which is grooved and helps in collection of permeate.
4. The stirred tank of the stirred cell module is filled with __________
a) pressure
b) disc
c) feed
d) permeate
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Explanation: The stirred tank is filled with cells having feed in the compressed form by the help of pressure. It is operated by pumping feed in the reservoir at a continuous rate.
5. The stirred cells are operated in _________ mode.
a) cross flow
b) continuous
c) dead end
d) mixed
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Explanation: The stirred cells are operated in a dead-end mode through the continuously pumping of the feed from a reservoir so that the contents are well mixed and desired shear rate is provided over the membrane. Only the feed goes into the module and only permeate comes out of the module.
6. The continuous withdrawal of retentate in the stirred cell module is known as _________
a) Cross flow
b) Continuous
c) Dead end
d) Pseudo-cross flow
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Explanation: The pseudo cross flow mode of operation is required during the continuous removal of retentate that is being separated using the membrane separation process. It can be provided as another mode instead of dead end mode.
7. Stirred cell module is used for ___________
a) large scale manufacturing
b) small scale manufacturing
c) drying
d) crystallization
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Explanation: Small scale manufacturing as well as research laboratories can use stirred cell module for the process of membrane separation and is mostly used for the process of ultrafiltration and microfiltration.
8. The stirred cell modules provide steady and uniformity in terms of conditions at _________
a) feed
b) reservoir
c) membrane surface
d) stirrer
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Explanation: The steady and uniform condition at the surface of membrane is provided by the stirred cell module and therefore, it is useful for the development process as well as optimization of the process.
9. The design of flat sheet tangential flow module is like _________
a) plate and frame filter press
b) rotary drum
c) stirred cell module
d) membrane
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Explanation: The plate and frame filter press and the flat sheet tangential flow module have similar design and have shallow channel along with the flat sheet of membrane covering both sides.
10. The membranes are supported on __________ to allow simple permeate collection.
a) flat plate
b) sheet
c) grooved plate
d) membrane module
View Answer
Explanation: The grooved plate provides more area to collect permeate therefore membrane is supported by the grooved plate as the feed is pumped in the channel then the permeate moves through the membrane and then collected in the grooved plate.
Sanfoundry Global Education & Learning Series – Bioseparation Engineering.
To practice all areas of Bioseparation Engineering, here is complete set of 1000+ Multiple Choice Questions and Answers.
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