Filtration

FILTRATION

A. N. M. SHARIFStudent (Dept. of Pharmacy),

University of Asia Pacific

BangladeshE-mail:- [email protected]

Presentation on

FILTRATION

Separation technique

Separate solid from a fluid

By passing the mixture through a porous medium

Some Definitions Describing Filtration

Filtration

SlurryFilter

medium

Filter cake

Filtrate

Suspension to be

filtered

Porous medium used

to retain the solids

Accumulated Solids on

the filter

Clear liquid passing through the filter

Classification of Filtration

Type of operation

Batch

Continuous

Direction of fluid flow with respect of filter medium

Perpendicular

Parallel

Type of filter medium

Screen

Deep bed

Flow rate or pressure control during filtration

Constant pressure drop

Cake

Principle of filtrationPores of Filter medium are

smaller than size of particles to be

separate

Filter medium is placed on a

support

Slurry is placed over the filter

medium

Due to pressure difference across the filter, Fluid

flows through the filter medium

Gravity is acting over the liquid

medium

So solids are trapped on the surface of the filter medium

Application of Filtration

In Laboratory

Sterilization drug

Effluent treatment plant

Filtrate waste products from Blood

Application of Filtration in Daily life

Kidney (Nephron)

Lungs (Air filtration alveoli)

Water Filtration

Tea Leaves Filtration