Filtration is a mechanical or physical process used to separate solids from liquids or gases by passing the mixture through a medium that allows only the fluid to pass while retaining the solid particles. Here’s a detailed explanation of its various aspects: Objectives of Filtration Clarification: To remove suspended solids from liquids or gases, making … Read more

Theories & Factors influencing filtration Factors influencing filtration revolve around separating solid particles from liquid or gas using a porous medium Poiseuille’s Equation Poiseuille’s equation describes the laminar flow of a fluid through a cylindrical pipe, often applied to describe the flow through the pores of a filter medium. $Q = \frac{\pi r^4 \Delta P}{8 … Read more

Filter Aids Filter aids are materials added to the fluid to improve the filtration process. They can prevent clogging, improve flow rates, and enhance the clarity of the filtrate. Common filter aids include: Diatomaceous Earth: Made from fossilized remains of diatoms, used in fine filtration. Perlite: A volcanic glass material that expands and is used … Read more

Principle of Meta Filter The meta filter operates on the principle of surface and depth filtration, using metal meshes or sintered metal to filter out particles from fluids. It can handle high temperatures and pressures, making it suitable for demanding applications. Construction of Meta Filter Filter Medium: Metal mesh or sintered metal, often stainless steel, … Read more

Principle of Rotary Drum Filter The rotary drum filter operates on the principle of vacuum filtration, where a vacuum is applied inside the drum to draw liquid through the filter medium, leaving solids behind. Construction of Rotary Drum Filter Rotary Drum: A rotating cylindrical drum covered with a filter cloth. Vacuum System: Creates a vacuum … Read more

Principle of Filter Leaf It operates on the principle of surface filtration, where the slurry is filtered through a porous medium (filtered leaf) to separate solids from liquids. Construction of Filter Leaf Filter Leaf: A metal frame covered with filter cloth or wire mesh. Filter Tank: A tank where the filter leaves are submerged. Agitator: … Read more

Principle of Plate & Frame Filter The plate and frame filter press operates on the principle of pressure filtration. A slurry (mixture of solid particles and liquid) is pumped into the press, and pressure is applied to separate the solid particles from the liquid. Construction of Plate & Frame Filter Filter Plates: Flat plates with … Read more

Principles of Tray Dryer A tray dryer operates on the principle of convection drying, where heated air circulates over the trays containing the wet material. The moisture from the material is transferred to the air and carried away, leaving the material dry. Construction of Tray Dryer Chamber: An insulated enclosure to maintain heat. Trays: Perforated … Read more

The “rate of drying curve” is a graphical representation used in drying processes to illustrate how the moisture content in a material change over time. This curve is important in various industries such as food processing, pharmaceuticals, and materials science for optimizing drying techniques and understanding the kinetics of moisture removal. Rate of Drying Curve … Read more