Particulate Matter in Ambient Air
Particulate matter (PM) is a pollutant as a mixture of solid particles, liquid droplets and mixture of solid and liquid particles in […]
Coagulation, Flocculation, and Agglomeration
Agglomeration Agglomeration refers to the formation of more or less firmly bound primary particles by collision processes between primary particles, primary particles […]
Fundamentals of Gas Filtration: Particle Capture Mechanisms
Understanding the ability of filter media to collect particles from a gas stream passing through it is key to the successful filter […]
Testing Compatibilities of Filter Media with Liquids
The first quality of a liquid filtering media is its permeability, i.e. how easily a liquid can flow through the filter. The […]
Shear Viscosity
Viscosity is a measure of the flowability of a fluid. It is measured in Pa.s The greater the viscosity, the more viscous […]
Primer on Hydrophilic, Hydrophobic, and Oleophobic Media
Hydrophilic Hydrophilic means water loving. Most common filters use hydrophilic media. Examples of hydrophilic filters are that wet or “wet-out” with water […]
Coagulation and Flocculation to Improve Solid/Liquid Separation Process
Chemical treatment means the use of coagulants or flocculants to enhance the agglomeration of solid particles in the slurry to form larger […]
Size Distribution and Sources of Particles in Ambient Air
Particle Size and Distribution in Ambient Air The particle sizes in the ambient air are ranged from 1 nanometer to slightly more […]
Cigarette Smoke: Size Distribution and Effects on Filters
Cigarette smoke is an important aerosol in the air filtration industry and research. It is an unwanted aerosol and therefore there are […]
Centrifugation in Bioseparation
Filtration is often reaching its limits in the industrial separation of biomass like cells or other micro organisms from e.g. fermentation broth. […]
Filter Aids
“Filter Aids” is a group of inert materials that can be used in filtration pretreatment. There are two objectives related to the […]
Pleatable UPE Membrane Media in Pulse-Cleaned Dust Removal Air Applications
Newly developed UPE membrane composites are compared with commercial PTFE membranes in a study being done at Lydall Filtration. UPE has specific […]