Principles of Operation. ◆ Filtration involves passing a material through a filter medium that retains particles of a certain size, Filtration is distinguished from other membrane separations (ultrafiltration and reverse osmosis) in terms of the size of particles that are separated. A fluid containing solid matter is forced through a filter medium, with the solid particles being retained by the filter and the liquid passing through
Principles of Operation. ◆ Filtration involves passing a material through a filter medium that retains particles of a certain size, Filtration is distinguished from other membrane separations (ultrafiltration and reverse osmosis) in terms of the size of particles that are separated. A fluid containing solid matter is forced through a filter medium, with the solid particles being retained by the filter and the liquid passing through
9.2 table Applications of Filtration in the Food Processing Industry Refining operations Fat fractionation (palm oil,palm kernel oil,milk fat,etc.) Sugar refining (lactose,sucrose,etc.) Salt,organic acids,etc. Removal of microorganisms Cold pasteurization (beer) Air sterilization Clarification Fruit juices (apple juice,etc.) Vegetable oils Separation of malt,hops,and yeast in brewing Separation of cheese curd from whey
Configurations ◆ plate-and-frame ◆ continuous rotary filter
Configurations ◆ plate-and-frame ◆ continuous rotary filter
Factors influencing filtration ◆ Size of the pores in the filter medium ◆ The viscosity of the carrier fluid ◆ The amount and characteristics of suspended solids to be filtered ◆ The external pressure applied ◆ Filter aids, such as diatomaceous earth or perlite
Factors influencing filtration ◆ Size of the pores in the filter medium ◆ The viscosity of the carrier fluid ◆ The amount and characteristics of suspended solids to be filtered ◆ The external pressure applied ◆ Filter aids, such as diatomaceous earth or perlite
Malt Water Malt boiling Filter Spent grains Hops Brew kettle Filter Spent hops Cooling Yeast Fermentation Filter Yeast Aging Cold filtration To packaging 9.1 Filtration steps in the brewing process. 9ur