This presentation by Md. Zahirul Islam discusses the process of filtration, defining it as a nonthermal mechanical method for separating solid particles from liquid mixtures using various types of filters. It classifies filtration by different criteria including driving force, function, mechanism, operating cycle, and nature of solids, highlighting various filtration examples. The presentation emphasizes the importance of filtration in pharmaceutical formulations to remove impurities and achieve clear solutions.

1. Presentation of
Filtration

2. Welcome
To
My Presentation

3. Name: Md. Zahirul Islam
Roll:333
Batch:12th
Department of pharmacy
World University of Bangladesh

4. Presentation of
Filtration

5. Filtration
Filtration maybe defined as a nonthermal mechanical
process in which undissolved particulates or
suspended solid particles are separated from a solid
liquid mixture by passing through a porous fibrous or
granular permeable known as Filtration.

6. Classification of filtration
Filtration and filters maybe classified in a number of
ways
 By driving Force
 By Function
 By filtration Mechanism
 By operating Cycle
 By nature of Solid

7. By Driving Force
Gravity Filters: The driving force for filtration is
gravity
like bag sand gravity filers
Pressure filter: The pressure is applied only the slurry
Like:
Pressure lead filters
Industrial tubular filter
 Continuous rotary press filter

8. By function
Filtration for recovery of solid: it is done by cake
filtration.
 Filtration for recovery of filtrate: accomplished in
both filter medium and cake.
Vacuum filter: The driving force is the sub
atmospheric pressure .
Vacuum leaf filter
Rotary vacuum filter

9. By filtration mechanism
Filter medium filtration: The solid are trapped within
the pores of the filter medium
Cake filtration: In this case the solid particles
themeselves form a bridge on the filter medium that
then acts as a barrier for the solid molecules but not
for the liquids.

10. By operating cycle
Batch filter: for small scale production.
Continuous filter: for large scale production.

11. By nature of solid
 Filtration for compressible solid
 Filtration for incompressible solid

12. Characteristic of filtration
It contains two phases one is solid and other is liquid
Or gas.
It requires a filter medium and some filtration
equipments .
It requires driving force.
It is basically a nonthermal mechanical process.

13. Application of filtration
Removal of unwanted solid impurities from the liquid
dosage form.
Filtration is essential formulation step in case of
suspension and emulsion.
Filtration does to remove undissolved solid substance
from the mixture to get a clear solution that is more
acceptable to the patients .
Fore the separation of two phases such as fluid and
solid filtration is extensively used.

14. Thanks
To
all