World Journal of
Pharmaceutical and Life Sciences

FILTRATION: A MECHANICAL OR PHYSICAL OPERATION TO REMOVE DEBRIS IN‒VITRO/IN‒VIVO

*Prodipta Bhattacharyya, Kushal Nandi, Dr. Dhrubo Jyoti Sen and Dr. Dhananjoy Sah

ABSTRACT

Filtration is a mechanical or physical operation which is used for the separation of solids from fluids (liquids or gases) by interposing a porous medium through which only the fluid can pass. The suspension of solid and liquid to be filtered is known as the feed or slurry. The porous medium used to retain the solids is described as the filter medium. The accumulation of solids on the filter is referred to as the filter cake, while the clear liquid passing through the filter is the filtrate. The term clarification is used when the amount of solid in liquid is not more than 1%w/v. The surface upon which solids are deposited in a filter is called the filter medium. Filter aid is used to prevent the medium from becoming blocked and helps to form an open, porous cake, hence reducing the resistance to flow of the filtrate. Rate of filtration is defined as volume of filtrate collected in unit time.

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